WO2018105059A1 - Elevator monitoring device - Google Patents

Elevator monitoring device Download PDF

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Publication number
WO2018105059A1
WO2018105059A1 PCT/JP2016/086394 JP2016086394W WO2018105059A1 WO 2018105059 A1 WO2018105059 A1 WO 2018105059A1 JP 2016086394 W JP2016086394 W JP 2016086394W WO 2018105059 A1 WO2018105059 A1 WO 2018105059A1
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WO
WIPO (PCT)
Prior art keywords
elevator
video data
storage unit
video
information
Prior art date
Application number
PCT/JP2016/086394
Other languages
French (fr)
Japanese (ja)
Inventor
丸山　清泰
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2018555382A priority Critical patent/JP6604616B2/en
Priority to PCT/JP2016/086394 priority patent/WO2018105059A1/en
Priority to CN201680090773.0A priority patent/CN110035967B/en
Publication of WO2018105059A1 publication Critical patent/WO2018105059A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators

Definitions

  • the present invention relates to an elevator monitoring apparatus that records video taken by a monitoring camera installed in an elevator car.
  • surveillance cameras and surveillance recorders have been installed in various public facilities such as buildings, stations, and elevators due to the heightened awareness of crime prevention.
  • a surveillance camera is installed in the elevator car for the purpose of crime prevention in a confined space.
  • the video taken by the surveillance camera is monitored at the surveillance center and temporarily displayed on a monitor installed in the elevator car, or recorded on a monitoring device installed in the elevator car, machine room, etc. It is generally done.
  • the above monitoring device encodes video captured by the surveillance camera using still image compression technology, video compression technology, etc., such as hard disk, SSD (Solid State Drive), etc. It is comprised so that it may memorize
  • the present invention has been made in consideration of the above-mentioned problems, and continuously reproduces video recorded in a storage device while reducing the storage capacity of the storage device that records video captured by a surveillance camera. It is an object of the present invention to obtain an elevator monitoring device that can be used.
  • the elevator monitoring apparatus receives a video stream from a volatile storage unit, a nonvolatile storage unit, and a monitoring camera installed in the elevator car, and uses the time when the video stream is received as time information in the video stream.
  • An input control unit that adds and stores the video stream in the volatile storage unit, generates a video data by decoding the video stream stored in the volatile storage unit, and displays the time information added to the video stream as the video data.
  • the time information added to the video data by generating the reduced video data by reducing the capacity of the video data stored in the volatile storage unit Is added to the reduced video data to store the reduced video data in the volatile storage unit, and the reduced video data stored in the volatile storage unit.
  • the time information added to the reduced video data is added to the reduced video stream, and the reduced video stream is stored in the volatile storage unit; Is received, and according to the elevator information, one of the video stream and the reduced video stream stored in the volatile storage unit is selected as the video recording information, and the selected video recording information is recorded in the nonvolatile storage unit.
  • a control unit Is encoded to generate a reduced video stream, the time information added to the reduced video data is added to the reduced video stream, and the reduced video stream is stored in the volatile storage unit; Is received, and according to the elevator information, one of the video stream and the reduced video stream stored in the volatile storage unit is selected as the video recording information, and the selected video recording information is recorded in the nonvolatile storage unit.
  • an elevator monitoring apparatus that can continuously reproduce video recorded in a storage device while reducing the storage capacity of the storage device that records video captured by the monitoring camera. it can.
  • FIG. 5 is a diagram illustrating an example of reference video data stored in a reference video storage unit in FIG. 4. It is a figure which shows an example of the video data preserve
  • FIG. 1 is a block diagram showing a configuration of an elevator monitoring system according to Embodiment 1 of the present invention.
  • the elevator monitoring system includes an elevator monitoring device 1 (hereinafter abbreviated as monitoring device 1), a network 2, a monitoring camera 3, and an elevator control device 4.
  • the monitoring device 1 is connected via a network 2 so as to be communicable with a monitoring camera 3 installed in the elevator car.
  • a monitoring camera 3 for example, a network camera is used.
  • the monitoring camera 3 monitors passengers in the elevator car as monitoring targets.
  • the surveillance camera 3 encodes the captured video according to a moving image compression standard such as MPEG-4 / AVC (also referred to as H.264) to generate a video stream.
  • the monitoring camera 3 transmits the generated video stream to the monitoring device 1 via the network 2.
  • the elevator control device 4 controls the operation of the elevator and grasps the operation status of the elevator.
  • the elevator control device 4 is communicably connected to the monitoring device 1 and transmits elevator information indicating the status of the elevator to the monitoring device 1.
  • the elevator information includes driving information indicating the driving status of the elevator, door opening / closing information indicating the opening / closing status of the elevator door, and boarding information indicating the presence or absence of passengers in the elevator car. Examples of a method for determining the presence or absence of a passenger include a method for determining the presence or absence of a passenger in an elevator car based on a measurement result with a scale installed in the elevator.
  • the monitoring device 1 and the elevator control device 4 sequentially update, for example, a microcomputer that executes arithmetic processing, a ROM (Read Only Memory) that stores data such as program data and fixed value data, and the stored data. This is realized by a rewritten RAM (Random Access Memory).
  • a microcomputer that executes arithmetic processing
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the monitoring apparatus 1 includes an input control unit 11, a volatile storage unit 12, a decoding unit 13, an image processing unit 14, an encoding unit 15, a control unit 16, a nonvolatile storage unit 17, a nonvolatile temporary storage unit 18, and a copy control unit 19. Is provided.
  • the input control unit 11 receives a video stream transmitted from the monitoring camera 3 via the network 2.
  • the input control unit 11 adds the time when the video stream was received to the received video stream as time information, and stores the video stream with the time information added in the volatile storage unit 12.
  • a volatile memory is used as the volatile storage unit 12.
  • the input control unit 11 receives a reference frame called an I picture (Intra Picture) in a unit of video included in a video stream, for example, a GOP (Group Of Picture) unit. Is added to the I picture as time information.
  • I picture Intra Picture
  • GOP Group Of Picture
  • the input control unit 11 receives the video stream from the monitoring camera 3 installed in the elevator car, adds the time at which the video stream is received as time information to the video stream, and adds the video stream to the volatile storage unit. 12 to save.
  • the decoding unit 13 reads and decodes the video stream stored in the volatile storage unit 12, generates the decoded video stream as video data, and stores the video data in the volatile storage unit 12.
  • the decoding unit 13 operates as a decoder corresponding to the moving image compression standard applied to the surveillance camera 3. That is, H. When H.264 is applied, the decoding unit 13 performs H.264. It operates as a decoder corresponding to H.264.
  • the decoding unit 13 When decoding the video stream to generate video data, the decoding unit 13 adds the time information added to the video stream to the video data, and the video data with the time information added to the volatile storage unit 12. save.
  • the decoding unit 13 when decoding the video stream, the decoding unit 13 in addition to the I picture included in the GOP unit, other frames included in the GOP unit, that is, a P picture (Predictive Picture) and a B picture (Bidirectionally) Predictive Picture)) is used to decode all frames included in the GOP unit.
  • a P picture Predictive Picture
  • B picture Bidirectionally
  • the frame rate is determined when the surveillance camera 3 generates a video stream, and information on the frame rate (for example, 15 frames per second, 30 frames per second, etc.) is included in the video stream.
  • the decoding unit 13 designates the time of each frame from the time information added to the I picture of the video stream and the frame rate information of the video stream, and adds the time information to each frame.
  • the decoding unit 13 decodes the video stream stored in the volatile storage unit 12 to generate video data, adds the time information added to the video stream to the video data, and volatilizes the video data. Stored in the sex storage unit 12.
  • the image processing unit 14 reduces the capacity of the video data, generates the video data with the reduced capacity as reduced video data, and stores the reduced video data in the volatile storage unit 12. Specifically, the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12, generates video data with the reduced resolution as reduced video data, and volatilizes the reduced video data.
  • the resolution reduction unit 141 When the resolution reduction unit 141 reduces the resolution of the video data to generate reduced video data, the resolution reduction unit 141 adds the time information added to the video data to the reduced video data, and the reduced video data to which the time information is added. Stored in the volatile storage unit 12.
  • the image processing unit 14 reduces the capacity of the video data stored in the volatile storage unit 12 to generate reduced video data, and adds the time information added to the video data to the reduced video data.
  • the reduced video data is stored in the volatile storage unit 12.
  • the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12 and generates video data with the reduced resolution as reduced video data.
  • the encoding unit 15 converts the reduced video data stored in the volatile storage unit 12 to H.264.
  • the video data is encoded according to a video compression standard such as H.264, the encoded reduced video data is generated as a reduced video stream, and the reduced video stream is stored in the volatile storage unit 12.
  • the encoding unit 15 operates as an encoder to which the same standard as the moving image compression standard applied to the surveillance camera 3 is applied.
  • the encoding unit 15 When encoding the reduced video data to generate a reduced video stream, the encoding unit 15 adds the time information added to the reduced video data to the reduced video stream, and volatilizes the reduced video stream to which the time information is added. Stored in the sex storage unit 12.
  • the encoding unit 15 adds time information to the I picture in a unit of videos included in the reduced video stream, for example, in units of GOPs.
  • the encoding unit 15 encodes the reduced video data stored in the volatile storage unit 12 to generate a reduced video stream, and adds the time information added to the reduced video data to the reduced video stream. Save the reduced video stream in the volatile storage.
  • the control unit 16 receives the elevator information transmitted from the elevator control device 4, and selects one of the video stream and the reduced video stream stored in the volatile storage unit 12 as video recording information according to the elevator information.
  • the selected video recording information is recorded in the nonvolatile storage unit 17.
  • a hard disk drive is used as the nonvolatile storage unit 17.
  • the control unit 16 records the video stream transmitted from the surveillance camera 3 in the nonvolatile storage unit 17 as it is according to the elevator information, and once decodes the video stream while retaining the time information. After that, the operation of recording the reduced video stream, which has been subjected to the image processing for reducing and re-encoding the data capacity, in the nonvolatile storage unit 17 is switched. In addition, when the video recording information is switched between the video stream and the reduced video stream and recorded in the nonvolatile storage unit 17, the control unit 16 performs control so that the time information of the video recording information before and after switching is continuous.
  • the nonvolatile temporary storage unit 18 stores copy range information.
  • the start time for starting the video reproduction and the end time for ending the video reproduction are nonvolatile as the copy range information.
  • the copy control unit 19 corresponds to the video recording information recorded in the nonvolatile storage unit 17 in accordance with the start time and end time included in the copy range information stored in the connected nonvolatile temporary storage unit 18.
  • the video recording information is extracted, and the extracted video recording information is stored in the nonvolatile temporary storage unit 18.
  • the copy control unit 19 since the copy control unit 19 stores the video recording information in the nonvolatile temporary storage unit 18 in accordance with the copy range information, the user can store the video recording information recorded in the nonvolatile storage unit 17 with a personal computer. Can be played.
  • the video stream transmitted from the monitoring camera 3 is input to the input control unit 11 of the monitoring device 1 via the network 2.
  • the input control unit 11 adds time information to the video stream received from the monitoring camera 3 and stores the video stream to which the time information is added in the volatile storage unit 12. The time information is added to the I picture of the video stream.
  • the decoding unit 13 reads and decodes the video stream stored in the volatile storage unit 12, generates the decoded video stream as video data, and stores the video data in the volatile storage unit 12.
  • the decoding unit 13 adds time information to each frame of video data to be generated from time information added to the I picture of the video stream and frame rate information of the video stream.
  • the resolution reduction unit 141 of the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12, generates video data with the reduced resolution as reduced video data, and reduces the reduced video. Data is stored in the volatile storage unit 12.
  • the resolution reduction unit 141 adds the time information added to each frame of the video data so as to be inherited by the reduced video data.
  • the encoding unit 15 converts the reduced video data stored in the volatile storage unit 12 to H.264.
  • the video data is encoded according to a video compression standard such as H.264, the encoded reduced video data is generated as a reduced video stream, and the reduced video stream is stored in the volatile storage unit 12.
  • control unit 16 selects one of the video stream and the reduced video stream stored in the volatile storage unit 12 as video recording information in accordance with the elevator information received from the elevator control device 4, and selects the selected video recording. Information is recorded in the nonvolatile storage unit 17.
  • FIG. 2 is an explanatory diagram illustrating an operation performed by the control unit 16 of FIG. 1 in response to the received elevator information.
  • the types of driving information, door opening / closing information, and boarding information included in the elevator information transmitted from the elevator control device 4 are associated with the types of video recording information that the control unit 16 records in the nonvolatile storage unit 17. It is shown in the figure.
  • control unit 16 determines that the elevator is stopped and the door is open, it is stored in the volatile storage unit 12 regardless of the presence or absence of passengers in the elevator car.
  • the selected video recording information is selected as video recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
  • control unit 16 is configured to select a video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
  • the control unit 16 determines that the elevator is running and the door is open, the control unit 16 saves the volatile storage unit 12 regardless of the presence or absence of passengers in the elevator car.
  • the recorded video stream is recorded in the nonvolatile storage unit 17 as video recording information.
  • the control unit 16 is configured to select a video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
  • control unit 16 selects a video stream having a high video resolution as the video recording information.
  • the control unit 16 determines that the elevator is stopped, the door is closed, and there are passengers in the elevator car, the video stream stored in the volatile storage unit 12 is displayed as a video. This is selected as recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
  • the control unit 16 is configured to select a video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
  • the control unit 16 displays a video stream with a high video resolution. Select as recording information.
  • the control unit 16 determines that the elevator is running, the door is closed, and there are passengers in the elevator car, the reduced image stored in the volatile storage unit 12.
  • the stream is selected as video recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
  • the control unit 16 is configured to select a reduced video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
  • the control unit 16 determines from the elevator information that the elevator is running, the elevator door is closed, and there are passengers in the elevator car, the reduced video image has low resolution.
  • a stream is selected as video recording information.
  • the control unit 16 determines that the elevator is stopped, the door is closed, and there are no passengers in the elevator car, the video stream stored in the volatile storage unit 12 and the reduction are reduced.
  • One of the video streams is selected as video recording information, and the operation of recording the selected video recording information in the nonvolatile storage unit 17 is stopped.
  • control unit 16 is configured to stop the operation of recording the video recording information in the nonvolatile storage unit 17 when it is determined from the elevator information that such a situation has occurred.
  • the control unit 16 determines that the elevator is running, the door is closed, and there are no passengers in the elevator car, the video stream stored in the volatile storage unit 12 And the reduced video stream are selected as video recording information, and the operation of recording the selected video recording information in the nonvolatile storage unit 17 is stopped.
  • control unit 16 is configured to stop the operation of recording the video recording information in the nonvolatile storage unit 17 when it is determined from the elevator information that such a situation has occurred.
  • control unit 16 records the video recording information in the nonvolatile storage unit when it is determined from the elevator information that the elevator door is closed and there are no passengers in the elevator car. To stop.
  • control unit 16 receives the elevator information indicating the status of the elevator from the elevator control device 4, and according to the elevator information, either the video stream or the reduced video stream stored in the volatile storage unit 12. Is selected as video recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
  • FIG. 3 is a time chart showing an operation example of the control unit 16 of FIG.
  • FIG. 3 the time at which the elevator information transmitted from the elevator control device 4 is received, the changes over time of the driving information, door opening / closing information, and boarding information included in the elevator information, and the control unit 16 performs the video stream and the reduced video.
  • a time-dependent change in the operation of recording any one of the streams as video recording information in the nonvolatile storage unit 17 is illustrated.
  • the driving information is information indicating that the elevator is stopped in the period from 12:00 to 12:00:17 and in the period after 12:00:30.
  • the driving information is information indicating that the elevator is traveling during the period from 12:00:17 to 12:00:30.
  • the door opening / closing information indicates that the elevator door is closed during the period from 12:00 to 12:00:05, the period from 12:00:15 to 12:00:32, and the period after 12:00:45. This is information indicating this.
  • the door opening / closing information is information indicating that the door of the elevator is open in the period from 12:00:05 to 12:00:15 and in the period from 12:00:32 to 12:00:45.
  • the boarding information is information indicating that there is no passenger in the elevator car during the period from 12:00 to 12:00:08 and after 12:00:40.
  • the boarding information is information indicating that passengers are present in the elevator car during the period from 12:00:08 to 12:00:40.
  • the control unit 16 determines that the elevator is stopped and the door is closed based on the elevator information received from the elevator control device 4. Judge that there are no passengers in the car. In this case, the control unit 16 stops the operation of recording the video recording information in the nonvolatile storage unit 17.
  • the elevator control device 4 opens the door at 12:00:05.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are no passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
  • the elevator control device 4 closes the door at 12:00:15.
  • the control unit 16 determines from the elevator information received from the elevator controller 4 that the elevator is stopped, the door is closed, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
  • the elevator control device 4 starts running the elevator at 12:00:17.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is running, the door is closed, and the passenger is in the elevator car. Judge that In this case, the control unit 16 selects a reduced video stream stored in the volatile storage unit 12 as video recording information.
  • the control unit 16 switches the video recording information from the video stream to the reduced video stream and records it in the nonvolatile storage unit 17.
  • the control unit 16 causes time information of the video stream before switching and the reduced video stream after switching to be continuous. Therefore, since the time information of the video recording information before and after the switching is continuous, the video recording information can be reproduced continuously.
  • the elevator controller 4 stops the elevator.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is closed, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
  • the control unit 16 switches the video recording information from the reduced video stream to the video stream and records it in the nonvolatile storage unit 17.
  • the control unit 16 makes the time information of the reduced video stream before switching and the video stream after switching continuous. Therefore, since the time information of the video recording information before and after the switching is continuous, the video recording information can be reproduced continuously.
  • the elevator control device 4 opens the door at 12:00:32.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are no passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
  • the elevator control device 4 closes the door at 12:00:45. After 12:00:45, there are no passengers in the elevator car and the door is closed. Therefore, the control unit 16 operates as follows in order to suppress unnecessary recording of the video recording information in the nonvolatile storage unit 17.
  • control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information. After 12:00:46, the control unit 16 stops the operation of recording the video recording information in the nonvolatile storage unit 17.
  • one of the video stream and the reduced video stream stored in the volatile storage unit is selected as the video recording information, and the selected video is selected.
  • the recording information is configured to be recorded in the nonvolatile storage unit.
  • a video stream having a high video resolution can be recorded in the nonvolatile storage unit.
  • a reduced video stream with a low video resolution is recorded in the nonvolatile storage unit.
  • the reduced video stream is generated by taking over time information from the original video stream. Therefore, when the video recording information is recorded by switching from the video stream to the reduced video stream, and when the video recording information is recorded by switching from the reduced video stream to the video stream, the time information of the video recording information before and after the switching is continuous. ing. As a result, since the time information of the video record information is continuous, the video record information can be reproduced continuously.
  • FIG. 1 In the second embodiment of the present invention, a monitoring apparatus 1 configured to generate reduced video data by a method different from the first embodiment with respect to the configuration of the first embodiment will be described. In the second embodiment, description of points that are the same as those of the first embodiment will be omitted, and points different from the first embodiment will be mainly described.
  • the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12 and generates the video data with the reduced resolution as the reduced video data. It is configured.
  • the image processing unit 14 is configured as follows. That is, the image processing unit 14 detects a different portion from the video data by comparing the reference video data prepared in advance with the video data stored in the volatile storage unit 12. In addition, the image processing unit 14 extracts a region including the detected different part as an extraction region from the video data. Further, the image processing unit 14 generates video data obtained by cutting out only the extraction region from the entire region of the video data stored in the volatile storage unit 12 as reduced video data.
  • FIG. 4 is a block diagram showing the configuration of the elevator monitoring system according to Embodiment 2 of the present invention.
  • the monitoring device 1 includes an input control unit 11, a volatile storage unit 12, a decoding unit 13, an image processing unit 14, an encoding unit 15, a control unit 16, a non-volatile storage unit 17, a non-volatile temporary storage unit 18, and A copy control unit 19 is provided.
  • the image processing unit 14 includes a reference video storage unit 142, a motion detection unit 143, and an extraction unit 144.
  • the reference video storage unit 142 stores reference video data prepared in advance.
  • the reference video data prepared in advance is data to be compared for detecting a different portion from the video data stored in the volatile storage unit 12.
  • FIG. 5 is a diagram illustrating an example of reference video data stored in the reference video storage unit 142 of FIG.
  • an image captured by the monitoring camera 3 in the elevator car when the elevator door is closed and no person is in the vehicle is stored in the reference image storage unit 142 in advance as reference image data. ing.
  • the motion detection unit 143 compares the video data stored in the volatile storage unit 12 with the reference video data stored in the reference video storage unit 142 to detect a difference from the video data.
  • FIG. 6 is a diagram illustrating an example of video data stored in the volatile storage unit 12 of FIG. As shown in FIG. 6, an image captured by the monitoring camera 3 when a person is in the elevator car is stored in the volatile storage unit 12 as image data.
  • the motion detection unit 143 detects two passengers from the video data as different portions.
  • the extraction unit 144 extracts, from the video data stored in the volatile storage unit 12, an area including a different portion detected by the motion detection unit 143 as an extraction area. Subsequently, the extraction unit 144 generates, as reduced video data, video data (hereinafter referred to as extracted video data) obtained by cutting out only the extraction region from the entire region of the video data stored in the volatile storage unit 12. The reduced video data is stored in the volatile storage unit 12.
  • FIG. 7 is a diagram illustrating an extraction region extracted by the extraction unit 144 of FIG.
  • the extraction area extracted by the extraction unit 144 is illustrated as an area surrounded by a broken line (hereinafter referred to as a broken line area).
  • the extraction unit 144 extracts a region including two passengers corresponding to the difference detected by the motion detection unit 143, that is, a dashed line region as an extraction region. Specifically, the extraction unit 144 obtains upper, lower, left, and right coordinate values of the region including the difference detected by the motion detection unit 143, and extracts a region obtained by adding a predetermined constant to the coordinate value. Extract as a region. Further, the extraction unit 144 extracts the extraction region so as to be the same as the aspect ratio of the original video data stored in the volatile storage unit 12.
  • the encoding unit 15 converts the reduced video data stored in the volatile storage unit 12 by the extraction unit 144 to H.264.
  • a reduced video stream is generated by encoding with a moving picture compression standard such as H.264, and the reduced video stream is stored in the volatile storage unit 12.
  • the extraction area is extracted from the video data, and the video Extracted video data obtained by cutting out only the extraction area from the entire data area is generated as reduced video data.
  • Embodiment 3 In the third embodiment of the present invention, in contrast to the configuration of the second embodiment, when a different portion is detected from the video data in an area other than the extraction area, the video stream is preferentially nonvolatile as video recording information
  • the monitoring device 1 configured to record in the storage unit 17 will be described.
  • description of points that are the same as in the first and second embodiments will be omitted, and the description will focus on points that are different from the first and second embodiments.
  • the motion detection unit 143 detects a different portion from the video data stored in the volatile storage unit 12 other than the extraction region extracted by the extraction unit 144.
  • the control unit 16 performs the same operation as in the first embodiment. That is, the control unit 16 selects either the video stream or the reduced video stream stored in the volatile storage unit 12 as the video recording information according to the elevator information received from the elevator control device 4.
  • the control unit 16 when the motion detection unit 143 detects a different part from the video data stored in the volatile storage unit 12 other than the extraction region extracted by the extraction unit 144, The control unit 16 performs the following operation. That is, the control unit 16 preferentially selects the video stream stored in the volatile storage unit 12 as video recording information regardless of the elevator information received from the elevator control device 4.
  • the motion detection unit 143 is outside the extraction region. If a different part is detected, a video stream is selected as video recording information instead of a reduced video stream.
  • control unit 16 saves the video stream several seconds before the time when the different part is detected in the nonvolatile storage unit 17. It may be configured.
  • the elevator information is included in the configuration of the second embodiment. Regardless, the video stream stored in the volatile storage unit is preferentially selected as video recording information.
  • Embodiment 4 FIG.
  • a monitoring apparatus 1 configured to generate reduced video data including a series of zoom-up video data indicating a zoom-in change process will be described.
  • description of points that are the same as in the first to third embodiments will be omitted, and differences from the first to third embodiments will be mainly described.
  • the extraction unit 144 is configured to extract the extraction area from the video data and generate the extracted video data obtained by cutting out only the extraction area from the entire area of the video data as reduced video data. Has been.
  • the extracting unit 144 changes the zoom-up when the extracted area is gradually zoomed up with respect to the entire area of the video data with respect to the reduced video data.
  • the apparatus is configured to generate reduced video data including a series of zoom-up video data indicating the process.
  • FIG. 8 is a diagram illustrating an example of a series of zoom-up video data included in the reduced video data generated by the extraction unit 144 according to Embodiment 4 of the present invention.
  • the broken line area shown in FIG. 8 is shown for explaining the area to be enlarged, and the broken line area is not displayed in the actual data.
  • the extraction unit 144 performs zoom-up changes when the extraction region, that is, the broken-line region is gradually zoomed up with respect to the entire region of the video data stored in the volatile storage unit 12.
  • Reduced video data including a series of zoom-up video data indicating the process is generated.
  • a series of zoom-up video data is obtained by gradually zooming up the extraction area so that the resolution is the same for all areas of the video data (a) and the video data (a), for example.
  • the video data (b) and (c) whose area has been enlarged and the video data (d) obtained by cutting out only the extracted area from the entire area of the video data (a) are configured.
  • the extraction unit 144 performs a series of zoom-up operations that indicate the zoom-up change process when the extraction region is gradually zoomed up with respect to the entire area of the video data stored in the volatile storage unit 12. Reduced video data including video data is generated.
  • the extraction unit 144 further includes a series of zoom-back video data indicating a process of zoom back change when the extraction region is gradually zoomed back with respect to the entire region of the extracted video data.
  • the reduced video data included may be generated.
  • a series of zoom-back video data is obtained by gradually zooming back the extraction area so that the resolution is the same for all areas of the video data (d) and the video data (d).
  • the reduced video data (c) and (b) and the video data (a) are included.
  • FIG. 9 is a time chart showing an operation example of the control unit 16 according to Embodiment 4 of the present invention.
  • the changes over time of the driving information, door opening / closing information, and boarding information are the same as in FIG.
  • the control unit 16 determines that the elevator is running, the door is closed, and there are passengers in the elevator car from the elevator information received from the elevator control device 4. Judge. In this case, the control unit 16 records the reduced video stream in the nonvolatile storage unit 17 so as to include a series of zoom-up video data.
  • the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is closed, and there are passengers in the elevator car.
  • the reduced video stream is first recorded in the nonvolatile storage unit 17 so as to include a series of zoom-back video data, and then the video stream is recorded in the nonvolatile storage unit 17.
  • control unit 16 preferentially stores the video stream in a non-volatile manner. It may be configured to record in the sex storage unit 17.
  • the fourth embodiment when the extraction area is gradually zoomed up with respect to the entire area of the video data stored in the volatile storage unit, compared to the configuration of the second embodiment.
  • the zoomed-in video data including a series of zoomed-up video data showing the zoom-up change process is generated.
  • Embodiments 1 to 4 have been individually described, the configuration examples disclosed in Embodiments 1 to 4 can be arbitrarily combined.
  • Elevator monitoring device 1 Elevator monitoring device, 2 network, 3 monitoring camera, 4 elevator control device, 11 input control unit, 12 volatile storage unit, 13 decoding unit, 14 image processing unit, 15 encoding unit, 16 control unit, 17 non-volatile storage Unit, 18 nonvolatile temporary storage unit, 19 copy control unit, 141 resolution reduction unit, 142 reference video storage unit, 143 motion detection unit, 144 extraction unit.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

This elevator monitoring device is communicably connected to: a monitoring camera which is installed in an elevator car, and which transmits a video stream; and an elevator control device which controls operation of the elevator, and which transmits elevator information indicating the state of the elevator. The elevator monitoring device selects, as video recording information, in accordance with the elevator information received from the elevator control device, a video stream or a scaled-down video stream stored in a volatile storage unit, and records the selected video recording information in a non-volatile storage unit.

Description

エレベータ用監視装置Elevator monitoring device
　本発明は、エレベータかご内に設置される監視カメラで撮影された映像を記録するエレベータ用監視装置に関するものである。 The present invention relates to an elevator monitoring apparatus that records video taken by a monitoring camera installed in an elevator car.
　近年、防犯意識の高まりによって、ビル、駅、エレベータ等の様々な公共施設に、監視カメラおよび監視レコーダの設置が進んでいる。特に、エレベータにおいては、閉じ込められた空間内での防犯を目的として、エレベータかご内に監視カメラが設置されている。また、監視カメラで撮影された映像を、監視センターで監視するとともにエレベータかご内に設置されたモニターに一時的に表示したり、エレベータかご上、機械室等に設置された監視装置に記録したりすることが一般的におこなわれている。 In recent years, surveillance cameras and surveillance recorders have been installed in various public facilities such as buildings, stations, and elevators due to the heightened awareness of crime prevention. In particular, in an elevator, a surveillance camera is installed in the elevator car for the purpose of crime prevention in a confined space. In addition, the video taken by the surveillance camera is monitored at the surveillance center and temporarily displayed on a monitor installed in the elevator car, or recorded on a monitoring device installed in the elevator car, machine room, etc. It is generally done.
　ここで、デジタル映像技術の進展に伴い、上記の監視装置は、監視カメラで撮影した映像を、静止画圧縮技術、動画圧縮技術等を用いてエンコードし、ハードディスク、ＳＳＤ（Ｓｏｌｉｄ　Ｓｔａｔｅ　Ｄｒｉｖｅ）等の記憶装置に記憶するように構成されている。また、記憶装置の記憶容量は有限である。そこで、映像の長時間記録を実現するために、エレベータの運転状況およびエレベータかご内の乗客の有無に従って記憶装置への映像の記録を制御する技術、エンコーダの圧縮パラメータの変更によってフレームレートおよび画質を変更する技術等が提案されている。（例えば、特許文献１～３参照）。 Here, along with the advancement of digital video technology, the above monitoring device encodes video captured by the surveillance camera using still image compression technology, video compression technology, etc., such as hard disk, SSD (Solid State Drive), etc. It is comprised so that it may memorize | store in a memory | storage device. Further, the storage capacity of the storage device is finite. Therefore, in order to achieve long-term video recording, the frame rate and image quality are controlled by changing the compression parameters of the encoder, the technology that controls the recording of video to the storage device according to the operation status of the elevator and the presence or absence of passengers in the elevator car. Technologies to change are proposed. (For example, see Patent Documents 1 to 3).
特開２０１０－２０２３７４号公報JP 2010-202374 A 特開２０００－３５１５４６号公報JP 2000-351546 A 特開２００８－２７３６３７号公報JP 2008-273737 A
　ここで、エンコーダの圧縮パラメータを変更する際、Ｍｏｔｉｏｎ　ＪＰＥＧ（Ｊｏｉｎｔ　Ｐｈｏｔｏｇｒａｐｈｉｃ　Ｅｘｐｅｒｔｓ　Ｇｒｏｕｐ）、ＪＰＥＧ２０００等が適用され、映像を１フレーム単位の静止画で処理するエンコーダであれば、フレーム単位で記録するパラメータを変更することができる。しかしながら、ＭＰＥＧ（Ｍｏｖｉｎｇ　Ｐｉｃｔｕｒｅ　Ｅｘｐｅｒｔｓ　Ｇｒｏｕｐ）で規定される動画圧縮技術が適用されたエンコーダでは、フレーム間の差分情報を用いて高圧縮を実現している。そのため、エンコーダ動作中に圧縮パラメータを変更できないものが一般的であり、圧縮パラメータを変更する場合には、エンコーダを一旦停止して、圧縮パラメータを設定し、再度エンコーダを動作させる必要がある。 Here, when changing the compression parameter of the encoder, if Motion JPEG (Joint Photographic Experts Group), JPEG2000, etc. are applied, and the encoder processes the video as a still image in units of frames, the parameter for recording in units of frames can be set. Can be changed. However, an encoder to which a moving picture compression technique defined by MPEG (Moving Picture Experts Group) is applied realizes high compression using difference information between frames. Therefore, it is common that the compression parameter cannot be changed during the operation of the encoder. When changing the compression parameter, it is necessary to temporarily stop the encoder, set the compression parameter, and operate the encoder again.
　このように、動画圧縮技術が適用された一般的なエンコーダを使用した監視装置においては、エンコーダの圧縮パラメータを変更する場合、一旦エンコーダの処理を停止する必要があるので、監視カメラで撮影された映像を記憶装置に連続的に記録できないという問題がある。 In this way, in a monitoring device using a general encoder to which a moving image compression technique is applied, when changing the compression parameter of the encoder, it is necessary to stop the processing of the encoder once, so the image was taken by the monitoring camera. There is a problem that video cannot be continuously recorded in a storage device.
　本発明は、上記の問題点を考慮してなされたものであり、監視カメラで撮影された映像を記録する記憶装置の記憶容量を削減しつつ、記憶装置に記録された映像を連続的に再生することのできるエレベータ用監視装置を得ることを目的とする。 The present invention has been made in consideration of the above-mentioned problems, and continuously reproduces video recorded in a storage device while reducing the storage capacity of the storage device that records video captured by a surveillance camera. It is an object of the present invention to obtain an elevator monitoring device that can be used.
　本発明におけるエレベータ用監視装置は、揮発性記憶部と、不揮発性記憶部と、エレベータかご内に設置された監視カメラから映像ストリームを受信し、映像ストリームを受信した時刻を映像ストリームに時刻情報として付加して映像ストリームを揮発性記憶部に保存する入力制御部と、揮発性記憶部に保存されている映像ストリームをデコードして映像データを生成し、映像ストリームに付加された時刻情報を映像データに付加して映像データを揮発性記憶部に保存するデコード部と、揮発性記憶部に保存されている映像データの容量を縮小して縮小映像データを生成し、映像データに付加された時刻情報を縮小映像データに付加して縮小映像データを揮発性記憶部に保存する画像処理部と、揮発性記憶部に保存されている縮小映像データをエンコードして縮小映像ストリームを生成し、縮小映像データに付加された時刻情報を縮小映像ストリームに付加して縮小映像ストリームを揮発性記憶部に保存するエンコード部と、エレベータ制御装置からエレベータの状況を示すエレベータ情報を受信し、エレベータ情報に従って、揮発性記憶部に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部に記録する制御部と、を備えたものである。 The elevator monitoring apparatus according to the present invention receives a video stream from a volatile storage unit, a nonvolatile storage unit, and a monitoring camera installed in the elevator car, and uses the time when the video stream is received as time information in the video stream. An input control unit that adds and stores the video stream in the volatile storage unit, generates a video data by decoding the video stream stored in the volatile storage unit, and displays the time information added to the video stream as the video data The time information added to the video data by generating the reduced video data by reducing the capacity of the video data stored in the volatile storage unit Is added to the reduced video data to store the reduced video data in the volatile storage unit, and the reduced video data stored in the volatile storage unit. Is encoded to generate a reduced video stream, the time information added to the reduced video data is added to the reduced video stream, and the reduced video stream is stored in the volatile storage unit; Is received, and according to the elevator information, one of the video stream and the reduced video stream stored in the volatile storage unit is selected as the video recording information, and the selected video recording information is recorded in the nonvolatile storage unit. A control unit.
　本発明によれば、監視カメラで撮影された映像を記録する記憶装置の記憶容量を削減しつつ、記憶装置に記録された映像を連続的に再生することのできるエレベータ用監視装置を得ることができる。 According to the present invention, it is possible to obtain an elevator monitoring apparatus that can continuously reproduce video recorded in a storage device while reducing the storage capacity of the storage device that records video captured by the monitoring camera. it can.
本発明の実施の形態１におけるエレベータ用監視システムの構成を示すブロック図である。It is a block diagram which shows the structure of the monitoring system for elevators in Embodiment 1 of this invention. 図１の制御部が、受信したエレベータ情報に対応して行う動作を示す説明図である。It is explanatory drawing which shows the operation | movement performed by the control part of FIG. 1 corresponding to the received elevator information. 図１の制御部の動作例を示すタイムチャートである。It is a time chart which shows the operation example of the control part of FIG. 本発明の実施の形態２におけるエレベータ用監視システムの構成を示すブロック図である。It is a block diagram which shows the structure of the monitoring system for elevators in Embodiment 2 of this invention. 図４の参照映像記憶部に保存されている参照映像データの一例を示す図である。FIG. 5 is a diagram illustrating an example of reference video data stored in a reference video storage unit in FIG. 4. 図４の揮発性記憶部に保存されている映像データの一例を示す図である。It is a figure which shows an example of the video data preserve | saved at the volatile memory | storage part of FIG. 図４の抽出部によって抽出された抽出領域を示す図である。It is a figure which shows the extraction area | region extracted by the extraction part of FIG. 本発明の実施の形態４における抽出部によって生成される縮小映像データに含まれる一連のズームアップ映像データの一例を示す図である。It is a figure which shows an example of a series of zoom-up video data contained in the reduced video data produced | generated by the extraction part in Embodiment 4 of this invention. 本発明の実施の形態４における制御部の動作例を示すタイムチャートである。It is a time chart which shows the operation example of the control part in Embodiment 4 of this invention.
　以下、本発明によるエレベータ用監視装置を、好適な実施の形態にしたがって図面を用いて説明する。なお、図面の説明においては、同一部分または相当部分には同一符号を付し、重複する説明を省略する。 Hereinafter, an elevator monitoring apparatus according to the present invention will be described with reference to the drawings according to a preferred embodiment. In the description of the drawings, the same portions or corresponding portions are denoted by the same reference numerals, and redundant description is omitted.
　実施の形態１．
　図１は、本発明の実施の形態１におけるエレベータ用監視システムの構成を示すブロック図である。図１において、エレベータ用監視システムは、エレベータ用監視装置１（以下、監視装置１と略す）、ネットワーク２、監視カメラ３およびエレベータ制御装置４を備える。 Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of an elevator monitoring system according to Embodiment 1 of the present invention. In FIG. 1, the elevator monitoring system includes an elevator monitoring device 1 (hereinafter abbreviated as monitoring device 1), a network 2, a monitoring camera 3, and an elevator control device 4.
　監視装置１は、ネットワーク２を介して、エレベータかご内に設置された監視カメラ３と通信可能に接続される。監視カメラ３としては、例えば、ネットワークカメラが用いられる。 The monitoring device 1 is connected via a network 2 so as to be communicable with a monitoring camera 3 installed in the elevator car. As the monitoring camera 3, for example, a network camera is used.
　監視カメラ３は、エレベータかご内の乗客を監視対象として監視する。監視カメラ３は、撮影した映像を、ＭＰＥＧ－４／ＡＶＣ（Ｈ．２６４とも呼ばれる）等の動画圧縮規格でエンコードして映像ストリームを生成する。監視カメラ３は、生成した映像ストリームを、ネットワーク２を介して監視装置１に送信する。 The monitoring camera 3 monitors passengers in the elevator car as monitoring targets. The surveillance camera 3 encodes the captured video according to a moving image compression standard such as MPEG-4 / AVC (also referred to as H.264) to generate a video stream. The monitoring camera 3 transmits the generated video stream to the monitoring device 1 via the network 2.
　エレベータ制御装置４は、エレベータの動作を制御するとともに、エレベータの動作状況を把握する。また、エレベータ制御装置４は、監視装置１と通信可能に接続されており、エレベータの状況を示すエレベータ情報を監視装置１に送信する。エレベータ情報は、エレベータの運転状況を示す運転情報、エレベータドアの開閉状況を示すドア開閉情報、およびエレベータかご内の乗客の有無を示す乗車情報を含む。乗客の有無を判断する方法としては、例えば、エレベータに設置された秤での測定結果に基づいてエレベータかご内の乗客の有無を判断する方法が挙げられる。 The elevator control device 4 controls the operation of the elevator and grasps the operation status of the elevator. The elevator control device 4 is communicably connected to the monitoring device 1 and transmits elevator information indicating the status of the elevator to the monitoring device 1. The elevator information includes driving information indicating the driving status of the elevator, door opening / closing information indicating the opening / closing status of the elevator door, and boarding information indicating the presence or absence of passengers in the elevator car. Examples of a method for determining the presence or absence of a passenger include a method for determining the presence or absence of a passenger in an elevator car based on a measurement result with a scale installed in the elevator.
　監視装置１およびエレベータ制御装置４は、例えば、演算処理を実行するマイコンと、プログラムデータ、固定値データ等のデータを記憶するＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）と、格納されているデータを更新して順次書き換えられるＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）とによって実現される。 The monitoring device 1 and the elevator control device 4 sequentially update, for example, a microcomputer that executes arithmetic processing, a ROM (Read Only Memory) that stores data such as program data and fixed value data, and the stored data. This is realized by a rewritten RAM (Random Access Memory).
　次に、監視装置１の構成要素について説明する。監視装置１は、入力制御部１１、揮発性記憶部１２、デコード部１３、画像処理部１４、エンコード部１５、制御部１６、不揮発性記憶部１７、不揮発性一時記憶部１８およびコピー制御部１９を備える。 Next, components of the monitoring device 1 will be described. The monitoring apparatus 1 includes an input control unit 11, a volatile storage unit 12, a decoding unit 13, an image processing unit 14, an encoding unit 15, a control unit 16, a nonvolatile storage unit 17, a nonvolatile temporary storage unit 18, and a copy control unit 19. Is provided.
　入力制御部１１は、監視カメラ３からネットワーク２を介して送信される映像ストリームを受信する。入力制御部１１は、受信した映像ストリームに、その映像ストリームを受信した時刻を時刻情報として付加し、時刻情報が付加された映像ストリームを、揮発性記憶部１２に保存する。揮発性記憶部１２としては、例えば、揮発性メモリが用いられる。 The input control unit 11 receives a video stream transmitted from the monitoring camera 3 via the network 2. The input control unit 11 adds the time when the video stream was received to the received video stream as time information, and stores the video stream with the time information added in the volatile storage unit 12. For example, a volatile memory is used as the volatile storage unit 12.
　具体的には、入力制御部１１は、映像ストリーム内に含まれる映像のまとまった単位、例えばＧＯＰ（Ｇｒｏｕｐ　Ｏｆ　Ｐｉｃｔｕｒｅ）単位で、Ｉピクチャ（Ｉｎｔｒａ　Ｐｉｃｔｕｒｅ）と呼ばれる基準のフレームを受信した時の時刻を、時刻情報としてそのＩピクチャに付加する。 Specifically, the input control unit 11 receives a reference frame called an I picture (Intra Picture) in a unit of video included in a video stream, for example, a GOP (Group Of Picture) unit. Is added to the I picture as time information.
　このように、入力制御部１１は、エレベータかご内に設置された監視カメラ３から映像ストリームを受信し、映像ストリームを受信した時刻を映像ストリームに時刻情報として付加して映像ストリームを揮発性記憶部１２に保存する。 In this way, the input control unit 11 receives the video stream from the monitoring camera 3 installed in the elevator car, adds the time at which the video stream is received as time information to the video stream, and adds the video stream to the volatile storage unit. 12 to save.
　デコード部１３は、揮発性記憶部１２に保存されている映像ストリームを読み出してデコードし、デコードされた映像ストリームを映像データとして生成し、その映像データを揮発性記憶部１２に保存する。デコード部１３は、監視カメラ３に適用される動画圧縮規格に対応したデコーダとして動作する。すなわち、監視カメラ３にＨ．２６４が適用される場合、デコード部１３は、Ｈ．２６４に対応したデコーダとして動作する。 The decoding unit 13 reads and decodes the video stream stored in the volatile storage unit 12, generates the decoded video stream as video data, and stores the video data in the volatile storage unit 12. The decoding unit 13 operates as a decoder corresponding to the moving image compression standard applied to the surveillance camera 3. That is, H. When H.264 is applied, the decoding unit 13 performs H.264. It operates as a decoder corresponding to H.264.
　デコード部１３は、映像ストリームをデコードして映像データを生成する際に、映像ストリームに付加されている時刻情報を映像データに付加し、時刻情報が付加された映像データを揮発性記憶部１２に保存する。 When decoding the video stream to generate video data, the decoding unit 13 adds the time information added to the video stream to the video data, and the video data with the time information added to the volatile storage unit 12. save.
　具体的には、デコード部１３は、映像ストリームをデコードするとき、ＧＯＰ単位に含まれるＩピクチャに加えて、ＧＯＰ単位に含まれる他のフレーム、すなわち、Ｐピクチャ（Ｐｒｅｄｉｃｔｉｖｅ　Ｐｉｃｔｕｒｅ）、Ｂピクチャ（Ｂｉｄｉｒｅｃｔｉｏｎａｌｌｙ　Ｐｒｅｄｉｃｔｉｖｅ　Ｐｉｃｔｕｒｅ））等を用いて、ＧＯＰ単位に含まれるすべてのフレームをデコードする。 Specifically, when decoding the video stream, the decoding unit 13 in addition to the I picture included in the GOP unit, other frames included in the GOP unit, that is, a P picture (Predictive Picture) and a B picture (Bidirectionally) Predictive Picture)) is used to decode all frames included in the GOP unit.
　フレームレートは、監視カメラ３が映像ストリームを生成するときに決められており、映像ストリームにフレームレートの情報（例えば、秒１５フレーム、秒３０フレーム等）が含まれている。デコード部１３は、映像ストリームのＩピクチャに付加される時刻情報と、映像ストリームのフレームレートの情報とから、各フレームの時刻を指定し、各フレームに時刻情報を付加する。 The frame rate is determined when the surveillance camera 3 generates a video stream, and information on the frame rate (for example, 15 frames per second, 30 frames per second, etc.) is included in the video stream. The decoding unit 13 designates the time of each frame from the time information added to the I picture of the video stream and the frame rate information of the video stream, and adds the time information to each frame.
　このように、デコード部１３は、揮発性記憶部１２に保存されている映像ストリームをデコードして映像データを生成し、映像ストリームに付加された時刻情報を映像データに付加して映像データを揮発性記憶部１２に保存する。 As described above, the decoding unit 13 decodes the video stream stored in the volatile storage unit 12 to generate video data, adds the time information added to the video stream to the video data, and volatilizes the video data. Stored in the sex storage unit 12.
　画像処理部１４は、映像データの容量を縮小し、容量が縮小された映像データを縮小映像データとして生成し、その縮小映像データを揮発性記憶部１２に保存する。具体的には、画像処理部１４は、揮発性記憶部１２に保存されている映像データの解像度を縮小し、解像度が縮小された映像データを縮小映像データとして生成し、その縮小映像データを揮発性記憶部１２に保存する解像度縮小部１４１を有する。解像度縮小部１４１は、例えば、解像度が、１９２０×１０８０ドットの映像データを、６４０×３６０ドットに縮小する、すなわち、縦横ともに１／３にする等の画像処理を行うことで、縮小映像データを生成する。 The image processing unit 14 reduces the capacity of the video data, generates the video data with the reduced capacity as reduced video data, and stores the reduced video data in the volatile storage unit 12. Specifically, the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12, generates video data with the reduced resolution as reduced video data, and volatilizes the reduced video data. A resolution reduction unit 141 for storing in the storage unit 12. For example, the resolution reduction unit 141 reduces the video data with a resolution of 1920 × 1080 dots to 640 × 360 dots, that is, performs image processing such as reducing the vertical and horizontal to 1/3, thereby reducing the reduced video data. Generate.
　解像度縮小部１４１は、映像データの解像度を縮小して縮小映像データを生成する際に、映像データに付加されている時刻情報を縮小映像データに付加し、時刻情報が付加された縮小映像データを揮発性記憶部１２に保存する。 When the resolution reduction unit 141 reduces the resolution of the video data to generate reduced video data, the resolution reduction unit 141 adds the time information added to the video data to the reduced video data, and the reduced video data to which the time information is added. Stored in the volatile storage unit 12.
　このように、画像処理部１４は、揮発性記憶部１２に保存されている映像データの容量を縮小して縮小映像データを生成し、映像データに付加された時刻情報を縮小映像データに付加して縮小映像データを揮発性記憶部１２に保存する。具体的には、画像処理部１４は、揮発性記憶部１２に保存されている映像データの解像度を縮小し、解像度が縮小された映像データを縮小映像データとして生成する。 Thus, the image processing unit 14 reduces the capacity of the video data stored in the volatile storage unit 12 to generate reduced video data, and adds the time information added to the video data to the reduced video data. The reduced video data is stored in the volatile storage unit 12. Specifically, the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12 and generates video data with the reduced resolution as reduced video data.
　エンコード部１５は、揮発性記憶部１２に保存されている縮小映像データを、Ｈ．２６４等の動画圧縮規格でエンコードし、エンコードされた縮小映像データを縮小映像ストリームとして生成し、その縮小映像ストリームを揮発性記憶部１２に保存する。エンコード部１５は、監視カメラ３に適用される動画圧縮規格と同じ規格が適用されたエンコーダとして動作する。 The encoding unit 15 converts the reduced video data stored in the volatile storage unit 12 to H.264. The video data is encoded according to a video compression standard such as H.264, the encoded reduced video data is generated as a reduced video stream, and the reduced video stream is stored in the volatile storage unit 12. The encoding unit 15 operates as an encoder to which the same standard as the moving image compression standard applied to the surveillance camera 3 is applied.
　エンコード部１５は、縮小映像データをエンコードして縮小映像ストリームを生成する際に、縮小映像データに付加されている時刻情報を縮小映像ストリームに付加し、時刻情報が付加された縮小映像ストリームを揮発性記憶部１２に保存する。 When encoding the reduced video data to generate a reduced video stream, the encoding unit 15 adds the time information added to the reduced video data to the reduced video stream, and volatilizes the reduced video stream to which the time information is added. Stored in the sex storage unit 12.
　具体的には、エンコード部１５は、縮小映像ストリーム内に含まれる映像のまとまった単位、例えばＧＯＰ単位で、時刻情報をＩピクチャに付加する。 Specifically, the encoding unit 15 adds time information to the I picture in a unit of videos included in the reduced video stream, for example, in units of GOPs.
　このように、エンコード部１５は、揮発性記憶部１２に保存されている縮小映像データをエンコードして縮小映像ストリームを生成し、縮小映像データに付加された時刻情報を縮小映像ストリームに付加して縮小映像ストリームを揮発性記憶部に保存する。 Thus, the encoding unit 15 encodes the reduced video data stored in the volatile storage unit 12 to generate a reduced video stream, and adds the time information added to the reduced video data to the reduced video stream. Save the reduced video stream in the volatile storage.
　制御部１６は、エレベータ制御装置４から送信されるエレベータ情報を受信し、そのエレベータ情報に従って、揮発性記憶部１２に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する。なお、不揮発性記憶部１７としては、例えば、ハードディスクドライブが用いられる。 The control unit 16 receives the elevator information transmitted from the elevator control device 4, and selects one of the video stream and the reduced video stream stored in the volatile storage unit 12 as video recording information according to the elevator information. The selected video recording information is recorded in the nonvolatile storage unit 17. For example, a hard disk drive is used as the nonvolatile storage unit 17.
　このように、制御部１６は、エレベータ情報に従って、監視カメラ３から送信される映像ストリームをそのまま不揮発性記憶部１７に記録する動作と、その映像ストリームに対して、時間情報を保持したまま一度デコードした後、データ容量を縮小して再エンコードする画像処理が施された縮小映像ストリームを不揮発性記憶部１７に記録する動作とを切り替えて行う。また、制御部１６は、映像記録情報を映像ストリームおよび縮小映像ストリームに切り替えて不揮発性記憶部１７に記録する際、切り替え前後の映像記録情報の時間情報が連続するように制御する。 In this way, the control unit 16 records the video stream transmitted from the surveillance camera 3 in the nonvolatile storage unit 17 as it is according to the elevator information, and once decodes the video stream while retaining the time information. After that, the operation of recording the reduced video stream, which has been subjected to the image processing for reducing and re-encoding the data capacity, in the nonvolatile storage unit 17 is switched. In addition, when the video recording information is switched between the video stream and the reduced video stream and recorded in the nonvolatile storage unit 17, the control unit 16 performs control so that the time information of the video recording information before and after switching is continuous.
　不揮発性一時記憶部１８は、コピー範囲情報を保存する。不揮発性一時記憶部１８としては、例えば、ＵＳＢメモリ、ＳＤカード等が用いられる。利用者は、不揮発性記憶部１７に記録されている映像記録情報をパーソナルコンピュータで再生したい場合、映像の再生を開始する開始時刻と、映像の再生を終了する終了時刻を、コピー範囲情報として不揮発性一時記憶部１８に保存する。その後、利用者は、不揮発性一時記憶部１８を監視装置１に接続する。 The nonvolatile temporary storage unit 18 stores copy range information. As the nonvolatile temporary storage unit 18, for example, a USB memory, an SD card, or the like is used. When the user wants to reproduce the video recording information recorded in the non-volatile storage unit 17 on the personal computer, the start time for starting the video reproduction and the end time for ending the video reproduction are nonvolatile as the copy range information. Stored in the temporary sex storage unit 18. Thereafter, the user connects the nonvolatile temporary storage unit 18 to the monitoring device 1.
　コピー制御部１９は、接続された不揮発性一時記憶部１８に保存されているコピー範囲情報に含まれる開始時刻と終了時刻に従って、不揮発性記憶部１７に記録されている映像記録情報のうち該当する映像記録情報を抽出し、抽出した映像記録情報を不揮発性一時記憶部１８に保存する。このように、コピー制御部１９がコピー範囲情報に従って、映像記録情報を不揮発性一時記憶部１８に保存するので、利用者は、不揮発性記憶部１７に記録されている映像記録情報をパーソナルコンピュータで再生することができる。 The copy control unit 19 corresponds to the video recording information recorded in the nonvolatile storage unit 17 in accordance with the start time and end time included in the copy range information stored in the connected nonvolatile temporary storage unit 18. The video recording information is extracted, and the extracted video recording information is stored in the nonvolatile temporary storage unit 18. Thus, since the copy control unit 19 stores the video recording information in the nonvolatile temporary storage unit 18 in accordance with the copy range information, the user can store the video recording information recorded in the nonvolatile storage unit 17 with a personal computer. Can be played.
　次に、監視装置１の一連の動作の流れについて説明する。監視カメラ３から送信される映像ストリームは、ネットワーク２を介して、監視装置１の入力制御部１１に入力される。入力制御部１１は、監視カメラ３から受信した映像ストリームに時刻情報を付加し、時刻情報が付加された映像ストリームを揮発性記憶部１２に保存する。時刻情報は、映像ストリームのＩピクチャに付加される。 Next, the flow of a series of operations of the monitoring device 1 will be described. The video stream transmitted from the monitoring camera 3 is input to the input control unit 11 of the monitoring device 1 via the network 2. The input control unit 11 adds time information to the video stream received from the monitoring camera 3 and stores the video stream to which the time information is added in the volatile storage unit 12. The time information is added to the I picture of the video stream.
　デコード部１３は、揮発性記憶部１２に保存されている映像ストリームを読み出してデコードし、デコードされた映像ストリームを映像データとして生成し、その映像データを揮発性記憶部１２に保存する。デコード部１３は、映像ストリームのＩピクチャに付加される時刻情報と、映像ストリームのフレームレートの情報とから、生成する映像データの各フレームに時刻情報を付加する。 The decoding unit 13 reads and decodes the video stream stored in the volatile storage unit 12, generates the decoded video stream as video data, and stores the video data in the volatile storage unit 12. The decoding unit 13 adds time information to each frame of video data to be generated from time information added to the I picture of the video stream and frame rate information of the video stream.
　続いて、画像処理部１４の解像度縮小部１４１は、揮発性記憶部１２に保存されている映像データの解像度を縮小し、解像度が縮小された映像データを縮小映像データとして生成し、その縮小映像データを揮発性記憶部１２に保存する。解像度縮小部１４１は、映像データの各フレームに付加されている時刻情報を、縮小映像データに引き継ぐように付加する。 Subsequently, the resolution reduction unit 141 of the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12, generates video data with the reduced resolution as reduced video data, and reduces the reduced video. Data is stored in the volatile storage unit 12. The resolution reduction unit 141 adds the time information added to each frame of the video data so as to be inherited by the reduced video data.
　続いて、エンコード部１５は、揮発性記憶部１２に保存されている縮小映像データを、Ｈ．２６４等の動画圧縮規格でエンコードし、エンコードされた縮小映像データを縮小映像ストリームとして生成し、その縮小映像ストリームを揮発性記憶部１２に保存する。 Subsequently, the encoding unit 15 converts the reduced video data stored in the volatile storage unit 12 to H.264. The video data is encoded according to a video compression standard such as H.264, the encoded reduced video data is generated as a reduced video stream, and the reduced video stream is stored in the volatile storage unit 12.
　続いて、制御部１６は、エレベータ制御装置４から受信したエレベータ情報に従って、揮発性記憶部１２に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する。 Subsequently, the control unit 16 selects one of the video stream and the reduced video stream stored in the volatile storage unit 12 as video recording information in accordance with the elevator information received from the elevator control device 4, and selects the selected video recording. Information is recorded in the nonvolatile storage unit 17.
　次に、エレベータ制御装置４から送信されるエレベータ情報と、そのエレベータ情報に対応した制御部１６の動作との関係について、図２を参照しながら説明する。図２は、図１の制御部１６が、受信したエレベータ情報に対応して行う動作を示す説明図である。 Next, the relationship between the elevator information transmitted from the elevator control device 4 and the operation of the control unit 16 corresponding to the elevator information will be described with reference to FIG. FIG. 2 is an explanatory diagram illustrating an operation performed by the control unit 16 of FIG. 1 in response to the received elevator information.
　図２では、エレベータ制御装置４から送信されるエレベータ情報に含まれる運転情報、ドア開閉情報および乗車情報の種類と、制御部１６が不揮発性記憶部１７に記録する映像記録情報の種類とが関連付けられて図示されている。 In FIG. 2, the types of driving information, door opening / closing information, and boarding information included in the elevator information transmitted from the elevator control device 4 are associated with the types of video recording information that the control unit 16 records in the nonvolatile storage unit 17. It is shown in the figure.
　Ｎｏ３およびＮｏ４に示すように、制御部１６は、エレベータが停止し、ドアが開いていると判断した場合には、エレベータかご内の乗客の有無に関わらず、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する。 As shown in No. 3 and No. 4, when the control unit 16 determines that the elevator is stopped and the door is open, it is stored in the volatile storage unit 12 regardless of the presence or absence of passengers in the elevator car. The selected video recording information is selected as video recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
　このように、エレベータが停止し、ドアが開いている状況では、エレベータかご内の乗客の有無に関わらず、監視対象がエレベータの乗降中である可能性があり、その監視対象を監視する必要がある。そこで、制御部１６は、エレベータ情報から、このような状況が発生していると判断した場合、映像ストリームを映像記録情報として選択するように構成されている。 In this way, in a situation where the elevator is stopped and the door is open, there is a possibility that the monitoring target may be getting on and off the elevator regardless of whether there are passengers in the elevator car, and it is necessary to monitor the monitoring target. is there. Therefore, the control unit 16 is configured to select a video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
　Ｎｏ７およびＮｏ８に示すように、制御部１６は、エレベータが走行中であり、ドアが開いていると判断した場合には、エレベータかご内の乗客の有無に関わらず、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として不揮発性記憶部１７に記録する。 As shown in No. 7 and No. 8, when the control unit 16 determines that the elevator is running and the door is open, the control unit 16 saves the volatile storage unit 12 regardless of the presence or absence of passengers in the elevator car. The recorded video stream is recorded in the nonvolatile storage unit 17 as video recording information.
　このように、エレベータが走行中であり、ドアが開いている状況では、エレベータかご内の乗客の有無に関わらず、エレベータに異常が発生している。つまり、エレベータが走行中に関わらずドアが開いている状況は、エベータの通常使用時には発生しない状況である。また、このような異常な状況を記録する必要がある。そこで、制御部１６は、エレベータ情報から、このような状況が発生していると判断した場合、映像ストリームを映像記録情報として選択するように構成されている。 In this way, when the elevator is running and the door is open, the elevator is abnormal regardless of the presence or absence of passengers in the elevator car. In other words, the situation where the door is open regardless of whether the elevator is running is a situation that does not occur during normal use of the elevator. Moreover, it is necessary to record such an abnormal situation. Therefore, the control unit 16 is configured to select a video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
　以上、Ｎｏ３，４，７，８から分かるように、制御部１６は、エレベータ情報から、エレベータドアが開いていると判断した場合、映像の解像度が高い映像ストリームを映像記録情報として選択する。 As described above, as can be seen from Nos. 3, 4, 7, and 8, when it is determined from the elevator information that the elevator door is open, the control unit 16 selects a video stream having a high video resolution as the video recording information.
　Ｎｏ２に示すように、制御部１６は、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいると判断した場合には、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する。 As shown in No. 2, when the control unit 16 determines that the elevator is stopped, the door is closed, and there are passengers in the elevator car, the video stream stored in the volatile storage unit 12 is displayed as a video. This is selected as recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
　このように、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいる状況では、監視対象がエレベータかご内にいるにもかかわらず、エレベータが停止中であり、例えば、監視対象が倒れている、監視対象が動けないでいる等、監視対象にトラブルが発生している可能性がある。そこで、制御部１６は、エレベータ情報から、このような状況が発生していると判断した場合、映像ストリームを映像記録情報として選択するように構成されている。 Thus, in a situation where the elevator is stopped, the door is closed, and there are passengers in the elevator car, the elevator is stopped even though the monitoring target is in the elevator car. There is a possibility that trouble has occurred in the monitoring target, for example, it has fallen or the monitoring target cannot move. Therefore, the control unit 16 is configured to select a video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
　以上、Ｎｏ２から分かるように、制御部１６は、エレベータ情報から、エレベータが停止し、エレベータドアが閉じており、エレベータかご内に乗客がいると判断した場合、映像の解像度が高い映像ストリームを映像記録情報として選択する。 As described above, as can be seen from No. 2, when it is determined from the elevator information that the elevator is stopped, the elevator door is closed, and there are passengers in the elevator car, the control unit 16 displays a video stream with a high video resolution. Select as recording information.
　Ｎｏ６に示すように、制御部１６は、エレベータが走行中であり、ドアが閉じており、エレベータかご内に乗客がいると判断した場合には、揮発性記憶部１２に保存されている縮小映像ストリームを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する。 As shown in No 6, when the control unit 16 determines that the elevator is running, the door is closed, and there are passengers in the elevator car, the reduced image stored in the volatile storage unit 12. The stream is selected as video recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
　このように、エレベータが走行中であり、ドアが閉じており、エレベータかご内に乗客がいる状況では、監視対象がエレベータかご内にいるものの、エレベータが走行している間は、監視対象の動きが少なく、監視対象への事故発生の可能性も低くなる。したがって、縮小映像ストリームよりも映像の解像度が高い映像ストリームを不揮発性記憶部１７に記録する必要はなく、縮小映像ストリームを不揮発性記憶部１７に記録すれば十分である。映像ストリームではなく、縮小映像ストリームを不揮発性記憶部１７に記録すれば、不揮発性記憶部１７の記憶容量を節約することができる。そこで、制御部１６は、エレベータ情報から、このような状況が発生していると判断した場合、縮小映像ストリームを映像記録情報として選択するように構成されている。 Thus, in a situation where the elevator is running, the door is closed, and there are passengers in the elevator car, the monitored object is in the elevator car, but the monitored object moves while the elevator is running. And the possibility of an accident occurring on the monitoring target is reduced. Therefore, it is not necessary to record a video stream having a higher video resolution than the reduced video stream in the nonvolatile storage unit 17, and it is sufficient to record the reduced video stream in the nonvolatile storage unit 17. If the reduced video stream is recorded in the nonvolatile storage unit 17 instead of the video stream, the storage capacity of the nonvolatile storage unit 17 can be saved. Therefore, the control unit 16 is configured to select a reduced video stream as video recording information when it is determined from the elevator information that such a situation has occurred.
　以上、Ｎｏ６から分かるように、制御部１６は、エレベータ情報から、エレベータが走行中であり、エレベータドアが閉じており、エレベータかご内に乗客がいると判断した場合、映像の解像度が低い縮小映像ストリームを映像記録情報として選択する。 As described above, as can be seen from No. 6, when the control unit 16 determines from the elevator information that the elevator is running, the elevator door is closed, and there are passengers in the elevator car, the reduced video image has low resolution. A stream is selected as video recording information.
　Ｎｏ１に示すように、制御部１６は、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいないと判断した場合には、揮発性記憶部１２に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する動作を停止する。 As shown in No 1, when the control unit 16 determines that the elevator is stopped, the door is closed, and there are no passengers in the elevator car, the video stream stored in the volatile storage unit 12 and the reduction are reduced. One of the video streams is selected as video recording information, and the operation of recording the selected video recording information in the nonvolatile storage unit 17 is stopped.
　このように、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいない状況では、監視対象がエレベータかご内にいない。そこで、制御部１６は、エレベータ情報から、このような状況が発生していると判断した場合、映像記録情報を不揮発性記憶部１７に記録する動作を停止するように構成されている。 In this way, when the elevator is stopped, the door is closed, and there are no passengers in the elevator car, the monitoring target is not in the elevator car. Therefore, the control unit 16 is configured to stop the operation of recording the video recording information in the nonvolatile storage unit 17 when it is determined from the elevator information that such a situation has occurred.
　Ｎｏ５に示すように、制御部１６は、エレベータが走行中であり、ドアが閉じており、エレベータかご内に乗客がいないと判断した場合には、揮発性記憶部１２に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する動作を停止する。 As shown in No. 5, when the control unit 16 determines that the elevator is running, the door is closed, and there are no passengers in the elevator car, the video stream stored in the volatile storage unit 12 And the reduced video stream are selected as video recording information, and the operation of recording the selected video recording information in the nonvolatile storage unit 17 is stopped.
　このように、エレベータが走行中であり、ドアが閉じており、エレベータかご内に乗客がいない状況では、監視対象がエレベータかご内にいない。そこで、制御部１６は、エレベータ情報から、このような状況が発生していると判断した場合、映像記録情報を不揮発性記憶部１７に記録する動作を停止するように構成されている。 In this way, when the elevator is running, the door is closed, and there are no passengers in the elevator car, the monitoring target is not in the elevator car. Therefore, the control unit 16 is configured to stop the operation of recording the video recording information in the nonvolatile storage unit 17 when it is determined from the elevator information that such a situation has occurred.
　以上、Ｎｏ１，５から分かるように、制御部１６は、エレベータ情報から、エレベータドアが閉じており、エレベータかご内に乗客がいないと判断した場合、映像記録情報を不揮発性記憶部に記録する動作を停止する。 As can be seen from Nos. 1 and 5, the control unit 16 records the video recording information in the nonvolatile storage unit when it is determined from the elevator information that the elevator door is closed and there are no passengers in the elevator car. To stop.
　以上の例のように、制御部１６は、エレベータ制御装置４からエレベータの状況を示すエレベータ情報を受信し、エレベータ情報に従って、揮発性記憶部１２に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部１７に記録する。 As in the above example, the control unit 16 receives the elevator information indicating the status of the elevator from the elevator control device 4, and according to the elevator information, either the video stream or the reduced video stream stored in the volatile storage unit 12. Is selected as video recording information, and the selected video recording information is recorded in the nonvolatile storage unit 17.
　次に、制御部１６の動作例について、図３を参照しながらさらに説明する。図３は、図１の制御部１６の動作例を示すタイムチャートである。 Next, an example of the operation of the control unit 16 will be further described with reference to FIG. FIG. 3 is a time chart showing an operation example of the control unit 16 of FIG.
　図３では、エレベータ制御装置４から送信されるエレベータ情報を受信した時刻と、エレベータ情報に含まれる運転情報、ドア開閉情報および乗車情報のそれぞれの経時変化と、制御部１６が映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として不揮発性記憶部１７に記録する動作の経時変化とが、図示されている。 In FIG. 3, the time at which the elevator information transmitted from the elevator control device 4 is received, the changes over time of the driving information, door opening / closing information, and boarding information included in the elevator information, and the control unit 16 performs the video stream and the reduced video. A time-dependent change in the operation of recording any one of the streams as video recording information in the nonvolatile storage unit 17 is illustrated.
　また、図３では、運転情報、ドア開閉情報および乗車情報のそれぞれの経時変化の一例として、これらの情報が次のように変化すると想定している。 Moreover, in FIG. 3, as an example of each time-dependent change of driving information, door opening / closing information, and boarding information, it is assumed that these information changes as follows.
　すなわち、運転情報は、１２：００：００～１２：００：１７の期間、および１２：００：３０以降の期間では、エレベータが停止していることを示す情報である。運転情報は、１２：００：１７～１２：００：３０の期間では、エレベータが走行中であることを示す情報である。 That is, the driving information is information indicating that the elevator is stopped in the period from 12:00 to 12:00:17 and in the period after 12:00:30. The driving information is information indicating that the elevator is traveling during the period from 12:00:17 to 12:00:30.
　ドア開閉情報は、１２：００：００～１２：００：０５の期間、１２：００：１５～１２：００：３２の期間、および１２：００：４５以降の期間では、エレベータドアが閉じていることを示す情報である。ドア開閉情報は、１２：００：０５～１２：００：１５の期間、および１２：００：３２～１２：００：４５の期間では、エレベータのドアが開いていることを示す情報である。 The door opening / closing information indicates that the elevator door is closed during the period from 12:00 to 12:00:05, the period from 12:00:15 to 12:00:32, and the period after 12:00:45. This is information indicating this. The door opening / closing information is information indicating that the door of the elevator is open in the period from 12:00:05 to 12:00:15 and in the period from 12:00:32 to 12:00:45.
　乗車情報は、１２：００：００～１２：００：０８の期間、および１２：００：４０以降の期間では、エレベータかご内に乗客無しであることを示す情報である。乗車情報は、１２：００：０８～１２：００：４０の期間では、エレベータかご内に乗客有りであることを示す情報である。 The boarding information is information indicating that there is no passenger in the elevator car during the period from 12:00 to 12:00:08 and after 12:00:40. The boarding information is information indicating that passengers are present in the elevator car during the period from 12:00:08 to 12:00:40.
　図３に示すように、１２：００：００～１２：００：０５の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいないと判断する。この場合、制御部１６は、映像記録情報を不揮発性記憶部１７に記録する動作を停止する。 As shown in FIG. 3, in the period from 12:00 to 12:00:05, the control unit 16 determines that the elevator is stopped and the door is closed based on the elevator information received from the elevator control device 4. Judge that there are no passengers in the car. In this case, the control unit 16 stops the operation of recording the video recording information in the nonvolatile storage unit 17.
　続いて、１２：００：０５にエレベータ制御装置４がドアを開ける。１２：００：０５～１２：００：０８の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが開いており、エレベータかご内に乗客がいないと判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。 Subsequently, the elevator control device 4 opens the door at 12:00:05. During the period from 12:00:05 to 12:00:08, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are no passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
　続いて、１２：００：０８にエレベータに乗客が乗車する。１２：００：０８～１２：００：１５の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが開いており、エレベータかご内に乗客がいると判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。 Subsequently, passengers board the elevator at 12:00:08. During the period from 12:00:08 to 12:00:15, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
　続いて、１２：００：１５にエレベータ制御装置４がドアを閉める。１２：００：１５～１２：００：１７の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいると判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。 Subsequently, the elevator control device 4 closes the door at 12:00:15. During the period from 12:00:15 to 12:00:17, the control unit 16 determines from the elevator information received from the elevator controller 4 that the elevator is stopped, the door is closed, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
　続いて、１２：００：１７にエレベータ制御装置４がエレベータの走行を開始する。１２：００：１７～１２：００：３０の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが走行中であり、ドアが閉じており、エレベータかご内に乗客がいると判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている縮小映像ストリームを映像記録情報として選択する。 Subsequently, the elevator control device 4 starts running the elevator at 12:00:17. During the period from 12:00:17 to 12:00:30, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is running, the door is closed, and the passenger is in the elevator car. Judge that In this case, the control unit 16 selects a reduced video stream stored in the volatile storage unit 12 as video recording information.
　また、１２：００：１７において、制御部１６は、映像記録情報を映像ストリームから縮小映像ストリームへ切り替えて不揮発性記憶部１７に記録する。この場合、制御部１６は、図２に示すように、切り替え前の映像ストリームと切り替え後の縮小映像ストリームの時間情報が連続するようにする。そのため、切り替え前後の映像記録情報の時間情報が連続しているので、映像記録情報を連続して再生することができる。 Also, at 12:00:17, the control unit 16 switches the video recording information from the video stream to the reduced video stream and records it in the nonvolatile storage unit 17. In this case, as illustrated in FIG. 2, the control unit 16 causes time information of the video stream before switching and the reduced video stream after switching to be continuous. Therefore, since the time information of the video recording information before and after the switching is continuous, the video recording information can be reproduced continuously.
　続いて、１２：００：３０にエレベータが停止する階に到着したためエレベータ制御装置４がエレベータの走行を停止する。１２：００：３０～１２：００：３２の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいると判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。 Subsequently, since the elevator arrives at the floor where the elevator stops at 12:00:30, the elevator controller 4 stops the elevator. During the period from 12:00:30 to 12:00:32, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is closed, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
　また、１２：００：３０において、制御部１６は、映像記録情報を縮小映像ストリームから映像ストリームへ切り替えて不揮発性記憶部１７に記録する。この場合、制御部１６は、図２に示すように、切り替え前の縮小映像ストリームと切り替え後の映像ストリームの時間情報が連続するようにする。そのため、切り替え前後の映像記録情報の時間情報が連続しているので、映像記録情報を連続して再生することができる。 Also, at 12:00:30, the control unit 16 switches the video recording information from the reduced video stream to the video stream and records it in the nonvolatile storage unit 17. In this case, as shown in FIG. 2, the control unit 16 makes the time information of the reduced video stream before switching and the video stream after switching continuous. Therefore, since the time information of the video recording information before and after the switching is continuous, the video recording information can be reproduced continuously.
　続いて、１２：００：３２にエレベータ制御装置４がドアを開ける。１２：００：３２～１２：００：４０の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが開いており、エレベータかご内に乗客がいると判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。 Subsequently, the elevator control device 4 opens the door at 12:00:32. During the period from 12:00:32 to 12:00:40, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
　続いて、１２：００：４０にエレベータからすべての乗客が降車する。１２：００：４０～１２：００：４５の期間では、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが開いており、エレベータかご内に乗客がいないと判断する。この場合、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。 Then all passengers get off from the elevator at 12:00:40. In the period from 12:00:40 to 12:00:45, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is open, and there are no passengers in the elevator car. to decide. In this case, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information.
　続いて、１２：００：４５にエレベータ制御装置４がドアを閉める。１２：００：４５以降では、エレベータかご内には乗客がおらず、ドアも閉まっている。そこで、制御部１６は、不揮発性記憶部１７への映像記録情報の無駄な記録を抑えるために、次のように動作する。 Subsequently, the elevator control device 4 closes the door at 12:00:45. After 12:00:45, there are no passengers in the elevator car and the door is closed. Therefore, the control unit 16 operates as follows in order to suppress unnecessary recording of the video recording information in the nonvolatile storage unit 17.
　すなわち、例えばドアが閉まった時刻から１秒後の１２：００：４６までは、制御部１６は、揮発性記憶部１２に保存されている映像ストリームを映像記録情報として選択する。１２：００：４６以降では、制御部１６は、映像記録情報を不揮発性記憶部１７に記録する動作を停止する。 That is, for example, until 12:00:46 1 second after the door is closed, the control unit 16 selects a video stream stored in the volatile storage unit 12 as video recording information. After 12:00:46, the control unit 16 stops the operation of recording the video recording information in the nonvolatile storage unit 17.
　以上、本実施の形態１によれば、エレベータ制御装置から受信したエレベータ情報に従って、揮発性記憶部に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択し、選択した映像記録情報を不揮発性記憶部に記録するように構成されている。 As described above, according to the first embodiment, according to the elevator information received from the elevator control device, one of the video stream and the reduced video stream stored in the volatile storage unit is selected as the video recording information, and the selected video is selected. The recording information is configured to be recorded in the nonvolatile storage unit.
　これにより、監視カメラで撮影された映像を記録する記憶装置の記憶容量を削減しつつ、記憶装置に記録された映像を連続的に再生することができる。 Thereby, it is possible to continuously reproduce the video recorded in the storage device while reducing the storage capacity of the storage device that records the video taken by the surveillance camera.
　すなわち、エレベータの乗客が乗降中である状況、すなわち、乗客の動きがあって、事故などが発生しやすい状況では、映像の解像度が高い映像ストリームを不揮発性記憶部に記録することができる。また、エレベータの乗客が乗降中でない状況、すなわち、エレベータが走行中で、乗客の動きが少なく、事故などが発生しにくい状況では、映像の解像度が低い縮小映像ストリームを不揮発性記憶部に記録することができる。したがって、不揮発性記憶部で使用する記憶領域を削減することができるので、その結果、不揮発性記憶部の記憶容量を削減することができる。 That is, in a situation where an elevator passenger is getting on and off, that is, in a situation where an accident or the like is likely to occur due to movement of the passenger, a video stream having a high video resolution can be recorded in the nonvolatile storage unit. Also, when the elevator passengers are not getting on and off, that is, when the elevator is running, the passengers move little, and accidents are unlikely to occur, a reduced video stream with a low video resolution is recorded in the nonvolatile storage unit. be able to. Accordingly, the storage area used in the nonvolatile storage unit can be reduced, and as a result, the storage capacity of the nonvolatile storage unit can be reduced.
　また、不揮発性記憶部に記録されている映像ストリームおよび縮小映像ストリームのうち、縮小映像ストリームは、元の映像ストリームから時刻情報を引き継いで生成される。したがって、映像記録情報を映像ストリームから縮小映像ストリームへ切り替えて記録する場合、および、映像記録情報を縮小映像ストリームから映像ストリームへ切り替えて記録する場合、切り替え前後の映像記録情報の時間情報が連続している。その結果、映像記録情報の時間情報が連続しているので、映像記録情報を連続して再生することができる。 Of the video stream and the reduced video stream recorded in the nonvolatile storage unit, the reduced video stream is generated by taking over time information from the original video stream. Therefore, when the video recording information is recorded by switching from the video stream to the reduced video stream, and when the video recording information is recorded by switching from the reduced video stream to the video stream, the time information of the video recording information before and after the switching is continuous. ing. As a result, since the time information of the video record information is continuous, the video record information can be reproduced continuously.
　実施の形態２．
　本発明の実施の形態２では、先の実施の形態１の構成に対して、先の実施の形態１と異なる手法によって縮小映像データを生成するように構成された監視装置１について説明する。なお、本実施の形態２では、先の実施の形態１と同様である点の説明を省略し、先の実施の形態１と異なる点を中心に説明する。 Embodiment 2. FIG.
In the second embodiment of the present invention, a monitoring apparatus 1 configured to generate reduced video data by a method different from the first embodiment with respect to the configuration of the first embodiment will be described. In the second embodiment, description of points that are the same as those of the first embodiment will be omitted, and points different from the first embodiment will be mainly described.
　ここで、先の実施の形態１では、画像処理部１４は、揮発性記憶部１２に保存されている映像データの解像度を縮小し、解像度が縮小された映像データを縮小映像データとして生成するように構成されている。 Here, in the first embodiment, the image processing unit 14 reduces the resolution of the video data stored in the volatile storage unit 12 and generates the video data with the reduced resolution as the reduced video data. It is configured.
　これに対して、本実施の形態２では、画像処理部１４は、次のように構成されている。すなわち、画像処理部１４は、予め準備された参照映像データと、揮発性記憶部１２に保存されている映像データとを比較することで映像データから相違部分を検出する。また、画像処理部１４は、検出した相違部分を含む領域を映像データから抽出領域として抽出する。さらに、画像処理部１４は、揮発性記憶部１２に保存されている映像データの全領域から抽出領域のみを切り出した映像データを縮小映像データとして生成する。 On the other hand, in the second embodiment, the image processing unit 14 is configured as follows. That is, the image processing unit 14 detects a different portion from the video data by comparing the reference video data prepared in advance with the video data stored in the volatile storage unit 12. In addition, the image processing unit 14 extracts a region including the detected different part as an extraction region from the video data. Further, the image processing unit 14 generates video data obtained by cutting out only the extraction region from the entire region of the video data stored in the volatile storage unit 12 as reduced video data.
　図４は、本発明の実施の形態２におけるエレベータ用監視システムの構成を示すブロック図である。図４において、監視装置１は、入力制御部１１、揮発性記憶部１２、デコード部１３、画像処理部１４、エンコード部１５、制御部１６、不揮発性記憶部１７、不揮発性一時記憶部１８およびコピー制御部１９を備える。 FIG. 4 is a block diagram showing the configuration of the elevator monitoring system according to Embodiment 2 of the present invention. 4, the monitoring device 1 includes an input control unit 11, a volatile storage unit 12, a decoding unit 13, an image processing unit 14, an encoding unit 15, a control unit 16, a non-volatile storage unit 17, a non-volatile temporary storage unit 18, and A copy control unit 19 is provided.
　画像処理部１４は、参照映像記憶部１４２、動き検出部１４３および抽出部１４４を有する。 The image processing unit 14 includes a reference video storage unit 142, a motion detection unit 143, and an extraction unit 144.
　参照映像記憶部１４２は、予め準備された参照映像データを保存する。予め準備された参照映像データは、揮発性記憶部１２に保存されている映像データから、相違部分を検出するための比較対象となるデータである。 The reference video storage unit 142 stores reference video data prepared in advance. The reference video data prepared in advance is data to be compared for detecting a different portion from the video data stored in the volatile storage unit 12.
　次に、参照映像記憶部１４２に保存されている参照映像データの一例について、図５を参照しながら説明する。図５は、図４の参照映像記憶部１４２に保存されている参照映像データの一例を示す図である。図５に示すように、エレベータのドアが閉まっており、人が乗車していないときのエレベータかご内を監視カメラ３が撮影した映像が、参照映像データとして、参照映像記憶部１４２に予め保存されている。 Next, an example of reference video data stored in the reference video storage unit 142 will be described with reference to FIG. FIG. 5 is a diagram illustrating an example of reference video data stored in the reference video storage unit 142 of FIG. As shown in FIG. 5, an image captured by the monitoring camera 3 in the elevator car when the elevator door is closed and no person is in the vehicle is stored in the reference image storage unit 142 in advance as reference image data. ing.
　動き検出部１４３は、揮発性記憶部１２に保存されている映像データと、参照映像記憶部１４２に保存されている参照映像データとを比較することで、相違部分を映像データから検出する。 The motion detection unit 143 compares the video data stored in the volatile storage unit 12 with the reference video data stored in the reference video storage unit 142 to detect a difference from the video data.
　次に、動き検出部１４３の動作の一例について、図６を参照しながら説明する。図６は、図４の揮発性記憶部１２に保存されている映像データの一例を示す図である。図６に示すように、エレベータかご内に人が乗車している時に監視カメラ３が撮影した映像が、映像データとして、揮発性記憶部１２に保存されている。 Next, an example of the operation of the motion detection unit 143 will be described with reference to FIG. FIG. 6 is a diagram illustrating an example of video data stored in the volatile storage unit 12 of FIG. As shown in FIG. 6, an image captured by the monitoring camera 3 when a person is in the elevator car is stored in the volatile storage unit 12 as image data.
　動き検出部１４３は、例えば、図５に示すような参照映像データと、図６に示すような映像データとを比較した場合、相違部分として、２人の乗客を映像データから検出する。 For example, when comparing the reference video data as shown in FIG. 5 and the video data as shown in FIG. 6, the motion detection unit 143 detects two passengers from the video data as different portions.
　抽出部１４４は、揮発性記憶部１２に保存されている映像データから、動き検出部１４３によって検出された相違部分を含む領域を抽出領域として抽出する。続いて、抽出部１４４は、揮発性記憶部１２に保存されている映像データの全領域から抽出領域のみを切り出した映像データ（以下、抽出映像データと称す）を縮小映像データとして生成し、その縮小映像データを揮発性記憶部１２に保存する。 The extraction unit 144 extracts, from the video data stored in the volatile storage unit 12, an area including a different portion detected by the motion detection unit 143 as an extraction area. Subsequently, the extraction unit 144 generates, as reduced video data, video data (hereinafter referred to as extracted video data) obtained by cutting out only the extraction region from the entire region of the video data stored in the volatile storage unit 12. The reduced video data is stored in the volatile storage unit 12.
　次に、抽出部１４４の動作の一例について、図７を参照しながら説明する。図７は、図４の抽出部１４４によって抽出された抽出領域を示す図である。なお、図７では、図６に示すような映像データに対して、抽出部１４４によって抽出された抽出領域を、破線で囲んだ領域（以下、破線領域と称す）として図示している。 Next, an example of the operation of the extraction unit 144 will be described with reference to FIG. FIG. 7 is a diagram illustrating an extraction region extracted by the extraction unit 144 of FIG. In FIG. 7, for the video data as shown in FIG. 6, the extraction area extracted by the extraction unit 144 is illustrated as an area surrounded by a broken line (hereinafter referred to as a broken line area).
　図７に示すように、抽出部１４４は、動き検出部１４３によって検出された相違部分に相当する２人の乗客を含む領域、すなわち破線領域を抽出領域として抽出する。具体的には、抽出部１４４は、動き検出部１４３によって検出された相違部分を含む領域の上下左右の座標値を求め、その座標値に予め指定した定数を加えることで得られる領域を、抽出領域として抽出する。さらに、抽出部１４４は、揮発性記憶部１２に保存されている元の映像データのアスペクト比と同じになるように抽出領域を抽出する。 As illustrated in FIG. 7, the extraction unit 144 extracts a region including two passengers corresponding to the difference detected by the motion detection unit 143, that is, a dashed line region as an extraction region. Specifically, the extraction unit 144 obtains upper, lower, left, and right coordinate values of the region including the difference detected by the motion detection unit 143, and extracts a region obtained by adding a predetermined constant to the coordinate value. Extract as a region. Further, the extraction unit 144 extracts the extraction region so as to be the same as the aspect ratio of the original video data stored in the volatile storage unit 12.
　エンコード部１５は、先の実施の形態１と同様に、抽出部１４４によって揮発性記憶部１２に保存されている縮小映像データを、Ｈ．２６４等の動画圧縮規格でエンコードして縮小映像ストリームを生成し、その縮小映像ストリームを揮発性記憶部１２に保存する。 As in the first embodiment, the encoding unit 15 converts the reduced video data stored in the volatile storage unit 12 by the extraction unit 144 to H.264. A reduced video stream is generated by encoding with a moving picture compression standard such as H.264, and the reduced video stream is stored in the volatile storage unit 12.
　以上、本実施の形態２によれば、先の実施の形態１の構成に対して、解像度が縮小された映像データを縮小映像データとして生成する代わりに、映像データから抽出領域を抽出し、映像データの全領域から抽出領域のみを切り出した抽出映像データを縮小映像データとして生成するように構成されている。 As described above, according to the second embodiment, in contrast to the configuration of the first embodiment, instead of generating the video data with reduced resolution as the reduced video data, the extraction area is extracted from the video data, and the video Extracted video data obtained by cutting out only the extraction area from the entire data area is generated as reduced video data.
　これにより、エレベータの乗客が乗降中でない状況では、エレベータかご内で動きのある領域の映像、すなわち乗客の映像のみを不揮発性記憶部に記録することができ、その結果、不揮発性記憶部で使用する記憶領域をより削減することができる。 As a result, in the situation where the passengers of the elevator are not getting on and off, only the video of the area that moves within the elevator car, that is, the video of the passenger can be recorded in the non-volatile storage unit, and as a result, used in the non-volatile storage unit It is possible to further reduce the storage area.
　実施の形態３．
　本発明の実施の形態３では、先の実施の形態２の構成に対して、映像データから抽出領域以外の領域で相違部分が検出された場合、映像ストリームを優先的に映像記録情報として不揮発性記憶部１７に記録するように構成された監視装置１について説明する。なお、本実施の形態３では、先の実施の形態１、２と同様である点の説明を省略し、先の実施の形態１、２と異なる点を中心に説明する。 Embodiment 3 FIG.
In the third embodiment of the present invention, in contrast to the configuration of the second embodiment, when a different portion is detected from the video data in an area other than the extraction area, the video stream is preferentially nonvolatile as video recording information The monitoring device 1 configured to record in the storage unit 17 will be described. In the third embodiment, description of points that are the same as in the first and second embodiments will be omitted, and the description will focus on points that are different from the first and second embodiments.
　ここで、先の実施の形態２では、動き検出部１４３が、揮発性記憶部１２に保存されている映像データから、抽出部１４４によって抽出される抽出領域以外で相違部分を検出した場合であっても、制御部１６は、先の実施の形態１と同様の動作を行う。すなわち、制御部１６は、エレベータ制御装置４から受信したエレベータ情報に従って、揮発性記憶部１２に保存されている映像ストリームおよび縮小映像ストリームのいずれかを映像記録情報として選択する。 Here, in the second embodiment, the motion detection unit 143 detects a different portion from the video data stored in the volatile storage unit 12 other than the extraction region extracted by the extraction unit 144. However, the control unit 16 performs the same operation as in the first embodiment. That is, the control unit 16 selects either the video stream or the reduced video stream stored in the volatile storage unit 12 as the video recording information according to the elevator information received from the elevator control device 4.
　これに対して、本実施の形態３では、揮発性記憶部１２に保存されている映像データから、動き検出部１４３が、抽出部１４４によって抽出される抽出領域以外で相違部分を検出した場合、制御部１６は、次のような動作を行う。すなわち、制御部１６は、エレベータ制御装置４から受信したエレベータ情報に関わらず、揮発性記憶部１２に保存されている映像ストリームを優先的に映像記録情報として選択する。 On the other hand, in the third embodiment, when the motion detection unit 143 detects a different part from the video data stored in the volatile storage unit 12 other than the extraction region extracted by the extraction unit 144, The control unit 16 performs the following operation. That is, the control unit 16 preferentially selects the video stream stored in the volatile storage unit 12 as video recording information regardless of the elevator information received from the elevator control device 4.
　すなわち、制御部１６は、エレベータ情報から、エレベータが走行中であり、エレベータドアが閉じており、エレベータかご内に乗客がいると判断した場合であっても、動き検出部１４３が抽出領域以外で相違部分を検出すれば、縮小映像ストリームではなく、映像ストリームを映像記録情報として選択する。 That is, even if the control unit 16 determines from the elevator information that the elevator is running, the elevator door is closed, and there are passengers in the elevator car, the motion detection unit 143 is outside the extraction region. If a different part is detected, a video stream is selected as video recording information instead of a reduced video stream.
　なお、映像データから抽出領域以外の領域で相違部分が検出された場合、制御部１６は、その相違部分が検出された時刻よりも数秒前の映像ストリームを不揮発性記憶部１７に保存するように構成されていてもよい。 When a different portion is detected in an area other than the extraction area from the video data, the control unit 16 saves the video stream several seconds before the time when the different part is detected in the nonvolatile storage unit 17. It may be configured.
　以上、本実施の形態３によれば、先の実施の形態２の構成に対して、揮発性記憶部に保存されている映像データから抽出領域以外で相違部分が検出された場合、エレベータ情報に関わらず、揮発性記憶部に保存されている映像ストリームを優先的に映像記録情報として選択するように構成されている。 As described above, according to the third embodiment, when a different portion is detected from the video data stored in the volatile storage unit other than the extraction area, the elevator information is included in the configuration of the second embodiment. Regardless, the video stream stored in the volatile storage unit is preferentially selected as video recording information.
　これにより、エレベータの乗客が乗降中でない状況において、抽出領域以外で動きがある状況、すなわち例えば、監視カメラで撮影していない場所にいた乗客に動きがあってその乗客が監視カメラの撮影範囲内に入る状況、エレベータかご内に設置した絵画などが突然外れる状況等が発生した場合、縮小映像ストリームよりも映像領域が広い映像ストリームを不揮発性記憶部に記録することができる。その結果、エレベータが走行中であり、エレベータドアが閉じており、エレベータかご内に乗客がいる場合であっても、上記のような想定外の状況を映像として不揮発性記憶部に記録することができる。 As a result, in a situation where the passengers of the elevator are not getting on and off, there is a movement outside the extraction area, that is, for example, a passenger who was in a place not photographed by the surveillance camera is moving and the passenger is within the photographing range of the surveillance camera. When a situation occurs, a picture installed in the elevator car suddenly comes off, etc., a video stream having a video area wider than the reduced video stream can be recorded in the nonvolatile storage unit. As a result, even when the elevator is running, the elevator door is closed, and there are passengers in the elevator car, it is possible to record the above unexpected situation as a video in the nonvolatile storage unit. it can.
　実施の形態４．
　本発明の実施の形態４では、先の実施の形態２の構成に対して、揮発性記憶部１２に保存されている映像データの全領域に対して、抽出領域を徐々にズームアップするときのズームアップの変化の過程を示す一連のズームアップ映像データを含んだ縮小映像データを生成するように構成された監視装置１について説明する。なお、本実施の形態４では、先の実施の形態１～３と同様である点の説明を省略し、先の実施の形態１～３と異なる点を中心に説明する。 Embodiment 4 FIG.
In the fourth embodiment of the present invention, when the extraction area is gradually zoomed up with respect to the entire area of the video data stored in the volatile storage unit 12 with respect to the configuration of the second embodiment. A monitoring apparatus 1 configured to generate reduced video data including a series of zoom-up video data indicating a zoom-in change process will be described. In the fourth embodiment, description of points that are the same as in the first to third embodiments will be omitted, and differences from the first to third embodiments will be mainly described.
　ここで、先の実施の形態２では、抽出部１４４は、映像データから抽出領域を抽出し、映像データの全領域から抽出領域のみを切り出した抽出映像データを縮小映像データとして生成するように構成されている。 Here, in the second embodiment, the extraction unit 144 is configured to extract the extraction area from the video data and generate the extracted video data obtained by cutting out only the extraction area from the entire area of the video data as reduced video data. Has been.
　これに対して、本実施の形態４では、抽出部１４４は、上記の縮小映像データに対して、映像データの全領域に対して、抽出領域を徐々にズームアップするときのズームアップの変化の過程を示す一連のズームアップ映像データを含んだ縮小映像データを生成するように構成されている。 On the other hand, in the fourth embodiment, the extracting unit 144 changes the zoom-up when the extracted area is gradually zoomed up with respect to the entire area of the video data with respect to the reduced video data. The apparatus is configured to generate reduced video data including a series of zoom-up video data indicating the process.
　次に、抽出部１４４によって生成される縮小映像データに含まれる一連のズームアップ映像データについて、図８を参照しながら説明する。図８は、本発明の実施の形態４における抽出部１４４によって生成される縮小映像データに含まれる一連のズームアップ映像データの一例を示す図である。図８に示す破線領域は、拡大する領域を説明するために図示しており、実際のデータでは、破線領域は表示されない。 Next, a series of zoom-up video data included in the reduced video data generated by the extraction unit 144 will be described with reference to FIG. FIG. 8 is a diagram illustrating an example of a series of zoom-up video data included in the reduced video data generated by the extraction unit 144 according to Embodiment 4 of the present invention. The broken line area shown in FIG. 8 is shown for explaining the area to be enlarged, and the broken line area is not displayed in the actual data.
　図８に示すように、抽出部１４４は、揮発性記憶部１２に保存されている映像データの全領域に対して、抽出領域、すなわち破線領域を徐々にズームアップするときのズームアップの変化の過程を示す一連のズームアップ映像データを含んだ縮小映像データを生成する。一連のズームアップ映像データは、例えば、映像データ（ａ）と、映像データ（ａ）の全領域に対して、解像度が同じになるように抽出領域を徐々にズームアップすることで得られる、抽出領域が拡大された映像データ（ｂ），（ｃ）と、映像データ（ａ）の全領域から抽出領域のみを切り出した映像データ（ｄ）とを含んで構成される。 As shown in FIG. 8, the extraction unit 144 performs zoom-up changes when the extraction region, that is, the broken-line region is gradually zoomed up with respect to the entire region of the video data stored in the volatile storage unit 12. Reduced video data including a series of zoom-up video data indicating the process is generated. A series of zoom-up video data is obtained by gradually zooming up the extraction area so that the resolution is the same for all areas of the video data (a) and the video data (a), for example. The video data (b) and (c) whose area has been enlarged and the video data (d) obtained by cutting out only the extracted area from the entire area of the video data (a) are configured.
　このように、抽出部１４４は、揮発性記憶部１２に保存されている映像データの全領域に対して、抽出領域を徐々にズームアップするときのズームアップの変化の過程を示す一連のズームアップ映像データを含んだ縮小映像データを生成する。 As described above, the extraction unit 144 performs a series of zoom-up operations that indicate the zoom-up change process when the extraction region is gradually zoomed up with respect to the entire area of the video data stored in the volatile storage unit 12. Reduced video data including video data is generated.
　なお、抽出部１４４は、上記の構成に対して、抽出映像データの全領域に対して、抽出領域を徐々にズームバックするときのズームバックの変化の過程を示す一連のズームバック映像データをさらに含んだ縮小映像データを生成してもよい。一連のズームバック映像データは、例えば、映像データ（ｄ）と、映像データ（ｄ）の全領域に対して、解像度が同じになるように抽出領域を徐々にズームバックすることで、抽出領域が縮小された映像データ（ｃ），（ｂ）と、映像データ（ａ）とを含んで構成される。 In addition to the above configuration, the extraction unit 144 further includes a series of zoom-back video data indicating a process of zoom back change when the extraction region is gradually zoomed back with respect to the entire region of the extracted video data. The reduced video data included may be generated. For example, a series of zoom-back video data is obtained by gradually zooming back the extraction area so that the resolution is the same for all areas of the video data (d) and the video data (d). The reduced video data (c) and (b) and the video data (a) are included.
　図９は、本発明の実施の形態４における制御部１６の動作例を示すタイムチャートである。なお、図９では、運転情報、ドア開閉情報および乗車情報のそれぞれの経時変化は、先の図３と同様である。 FIG. 9 is a time chart showing an operation example of the control unit 16 according to Embodiment 4 of the present invention. In FIG. 9, the changes over time of the driving information, door opening / closing information, and boarding information are the same as in FIG.
　図９に示すように、１２：００：１７において、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが走行中であり、ドアが閉じており、エレベータかご内に乗客がいると判断する。この場合、制御部１６は、一連のズームアップ映像データが含まれるように縮小映像ストリームを不揮発性記憶部１７に記録する。 As shown in FIG. 9, at 12:00:17, the control unit 16 determines that the elevator is running, the door is closed, and there are passengers in the elevator car from the elevator information received from the elevator control device 4. Judge. In this case, the control unit 16 records the reduced video stream in the nonvolatile storage unit 17 so as to include a series of zoom-up video data.
　また、１２：００：３０において、制御部１６は、エレベータ制御装置４から受信したエレベータ情報から、エレベータが停止し、ドアが閉じており、エレベータかご内に乗客がいると判断する。この場合、はじめに一連のズームバック映像データが含まれるように縮小映像ストリームを不揮発性記憶部１７に記録し、その後、映像ストリームを不揮発性記憶部１７に記録する。 Also, at 12:00:30, the control unit 16 determines from the elevator information received from the elevator control device 4 that the elevator is stopped, the door is closed, and there are passengers in the elevator car. In this case, the reduced video stream is first recorded in the nonvolatile storage unit 17 so as to include a series of zoom-back video data, and then the video stream is recorded in the nonvolatile storage unit 17.
　なお、先の実施の形態３で説明したような映像データから抽出領域以外の領域で相違部分が検出された場合等、緊急性が求められる場合、制御部１６は、映像ストリームを優先的に不揮発性記憶部１７に記録するように構成されていてもよい。 In the case where urgency is required, such as when a different part is detected in an area other than the extraction area from the video data as described in the third embodiment, the control unit 16 preferentially stores the video stream in a non-volatile manner. It may be configured to record in the sex storage unit 17.
　以上、本実施の形態４によれば、先の実施の形態２の構成に対して、揮発性記憶部に保存されている映像データの全領域に対して、抽出領域を徐々にズームアップするときのズームアップの変化の過程を示す一連のズームアップ映像データを含んだ縮小映像データを生成するように構成されている。これにより、映像記録情報の再生時に映像データの全領域のどこの部分に監視範囲に相当する抽出領域が存在するのかを容易に確認することができる。 As described above, according to the fourth embodiment, when the extraction area is gradually zoomed up with respect to the entire area of the video data stored in the volatile storage unit, compared to the configuration of the second embodiment. The zoomed-in video data including a series of zoomed-up video data showing the zoom-up change process is generated. As a result, it is possible to easily confirm in which part of the entire area of the video data the extraction area corresponding to the monitoring area exists when reproducing the video recording information.
　なお、実施の形態１～４について個別に説明してきたが、実施の形態１～４のそれぞれで開示した構成例は、任意に組み合わせることが可能である。 Although Embodiments 1 to 4 have been individually described, the configuration examples disclosed in Embodiments 1 to 4 can be arbitrarily combined.
　１　エレベータ用監視装置、２　ネットワーク、３　監視カメラ、４　エレベータ制御装置、１１　入力制御部、１２　揮発性記憶部、１３　デコード部、１４　画像処理部、１５　エンコード部、１６　制御部、１７　不揮発性記憶部、１８　不揮発性一時記憶部、１９　コピー制御部、１４１　解像度縮小部、１４２　参照映像記憶部、１４３　動き検出部、１４４　抽出部。 1 Elevator monitoring device, 2 network, 3 monitoring camera, 4 elevator control device, 11 input control unit, 12 volatile storage unit, 13 decoding unit, 14 image processing unit, 15 encoding unit, 16 control unit, 17 non-volatile storage Unit, 18 nonvolatile temporary storage unit, 19 copy control unit, 141 resolution reduction unit, 142 reference video storage unit, 143 motion detection unit, 144 extraction unit.

Claims (8)

  1. 　揮発性記憶部と、
    　不揮発性記憶部と、
    　エレベータかご内に設置された監視カメラから映像ストリームを受信し、前記映像ストリームを受信した時刻を前記映像ストリームに時刻情報として付加して前記映像ストリームを前記揮発性記憶部に保存する入力制御部と、
    　前記揮発性記憶部に保存されている前記映像ストリームをデコードして映像データを生成し、前記映像ストリームに付加された前記時刻情報を前記映像データに付加して前記映像データを前記揮発性記憶部に保存するデコード部と、
    　前記揮発性記憶部に保存されている前記映像データの容量を縮小して縮小映像データを生成し、前記映像データに付加された前記時刻情報を前記縮小映像データに付加して前記縮小映像データを前記揮発性記憶部に保存する画像処理部と、
    　前記揮発性記憶部に保存されている前記縮小映像データをエンコードして縮小映像ストリームを生成し、前記縮小映像データに付加された前記時刻情報を前記縮小映像ストリームに付加して前記縮小映像ストリームを前記揮発性記憶部に保存するエンコード部と、
    　エレベータ制御装置からエレベータの状況を示すエレベータ情報を受信し、前記エレベータ情報に従って、前記揮発性記憶部に保存されている前記映像ストリームおよび前記縮小映像ストリームのいずれかを映像記録情報として選択し、選択した前記映像記録情報を前記不揮発性記憶部に記録する制御部と、
    　を備えたエレベータ用監視装置。     A volatile storage unit;
    A non-volatile storage unit;
    An input control unit that receives a video stream from a surveillance camera installed in an elevator car, adds the time when the video stream is received as time information to the video stream, and stores the video stream in the volatile storage unit; ,
    The video stream stored in the volatile storage unit is decoded to generate video data, the time information added to the video stream is added to the video data, and the video data is added to the volatile storage unit A decoding part to be stored in
    The video data stored in the volatile storage unit is reduced in size to generate reduced video data, and the time information added to the video data is added to the reduced video data to reduce the reduced video data. An image processing unit stored in the volatile storage unit;
    The reduced video data stored in the volatile storage unit is encoded to generate a reduced video stream, and the time information added to the reduced video data is added to the reduced video stream to generate the reduced video stream. An encoding unit stored in the volatile storage unit;
    Elevator information indicating the status of the elevator is received from the elevator control device, and according to the elevator information, either the video stream stored in the volatile storage unit or the reduced video stream is selected as video recording information and selected. A control unit for recording the recorded video information in the nonvolatile storage unit;
    Elevator monitoring device.
  2. 　前記制御部は、
    　　前記エレベータ情報から、エレベータドアが開いていると判断した場合、前記映像ストリームを前記映像記録情報として選択し、
    　　前記エレベータ情報から、前記エレベータが停止し、前記エレベータドアが閉じており、前記エレベータかご内に乗客がいると判断した場合、前記映像ストリームを前記映像記録情報として選択し、
    　　前記エレベータ情報から、前記エレベータが走行中であり、前記エレベータドアが閉じており、前記エレベータかご内に乗客がいると判断した場合、前記縮小映像ストリームを前記映像記録情報として選択する
    　請求項１に記載のエレベータ用監視装置。     The controller is
    When it is determined from the elevator information that the elevator door is open, the video stream is selected as the video recording information,
    From the elevator information, when it is determined that the elevator is stopped, the elevator door is closed, and there are passengers in the elevator car, the video stream is selected as the video recording information,
    The reduced video stream is selected as the video recording information when it is determined from the elevator information that the elevator is running, the elevator door is closed, and there are passengers in the elevator car. The elevator monitoring apparatus as described.
  3. 　前記制御部は、
    　　前記エレベータ情報から、前記エレベータドアが閉じており、前記エレベータかご内に乗客がいないと判断した場合、前記映像記録情報を前記不揮発性記憶部に記録する動作を停止する
    　請求項２に記載のエレベータ用監視装置。     The controller is
    The elevator according to claim 2, wherein when it is determined from the elevator information that the elevator door is closed and there are no passengers in the elevator car, the operation of recording the video recording information in the nonvolatile storage unit is stopped. Monitoring device.
  4. 　前記画像処理部は、
    　前記揮発性記憶部に保存されている前記映像データの解像度を縮小し、前記解像度が縮小された前記映像データを前記縮小映像データとして生成する解像度縮小部を有する
    　請求項１から３のいずれか１項に記載のエレベータ用監視装置。     The image processing unit
    The resolution reduction part which reduces the resolution of the said video data preserve | saved in the said volatile memory | storage part, and produces | generates the said video data by which the said resolution was reduced as said reduced video data. The elevator monitoring apparatus as described in the item.
  5. 　前記画像処理部は、
    　　予め準備された参照映像データを保存する参照映像記憶部と、
    　　前記揮発性記憶部に保存されている前記映像データと、前記参照映像記憶部に保存されている前記参照映像データとを比較することで、相違部分を前記映像データから検出する動き検出部と、
    　　前記揮発性記憶部に保存されている前記映像データから、前記動き検出部によって検出された前記相違部分を含む領域を抽出領域として抽出し、前記映像データの全領域から前記抽出領域のみを切り出した抽出映像データを前記縮小映像データとして生成する抽出部と、
    　を有する請求項１から３のいずれか１項に記載のエレベータ用監視装置。     The image processing unit
    A reference video storage unit for storing reference video data prepared in advance;
    Comparing the video data stored in the volatile storage unit with the reference video data stored in the reference video storage unit to detect a difference from the video data;
    An area including the difference detected by the motion detection unit is extracted as an extraction area from the video data stored in the volatile storage unit, and only the extraction area is cut out from the entire area of the video data. An extraction unit for generating extracted video data as the reduced video data;
    The elevator monitoring device according to claim 1, comprising:
  6. 　前記制御部は、
    　　前記動き検出部が、前記揮発性記憶部に保存されている前記映像データから、前記抽出部によって抽出される前記抽出領域以外で相違部分を検出した場合、前記エレベータ制御装置から受信した前記エレベータ情報に関わらず、前記映像ストリームを優先的に前記映像記録情報として選択する
    　請求項５に記載のエレベータ用監視装置。     The controller is
    The elevator information received from the elevator control device when the motion detection unit detects a different part from the video data stored in the volatile storage unit other than the extraction region extracted by the extraction unit. 6. The elevator monitoring apparatus according to claim 5, wherein the video stream is preferentially selected as the video recording information regardless of the video stream.
  7. 　前記抽出部は、
    　　前記揮発性記憶部に保存されている前記映像データの全領域に対して、前記抽出領域を徐々にズームアップするときのズームアップの変化の過程を示す一連のズームアップ映像データを含んだ前記縮小映像データを生成する
    　請求項５または６に記載のエレベータ用監視装置。     The extraction unit includes:
    The reduction including a series of zoom-up video data indicating a process of a zoom-up change when the extraction area is gradually zoomed up with respect to the entire area of the video data stored in the volatile storage unit The elevator monitoring device according to claim 5 or 6, wherein the image data is generated.
  8. 　前記抽出部は、
    　　前記抽出領域から、前記揮発性記憶部に保存されている前記映像データの全領域に徐々にズームバックするときのズームバックの変化の過程を示す一連のズームバック映像データを含んだ前記縮小映像データを生成する
    　請求項７に記載のエレベータ用監視装置。     The extraction unit includes:
    The reduced video data including a series of zoom-back video data indicating a change process of zoom back when gradually zooming back from the extraction area to the entire area of the video data stored in the volatile storage unit The elevator monitoring apparatus according to claim 7.
PCT/JP2016/086394 2016-12-07 2016-12-07 Elevator monitoring device WO2018105059A1 (en)

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