CN104836972A - Real-time shooting device with forward time-delay storage function and shooting method - Google Patents
Real-time shooting device with forward time-delay storage function and shooting method Download PDFInfo
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- CN104836972A CN104836972A CN201510214253.3A CN201510214253A CN104836972A CN 104836972 A CN104836972 A CN 104836972A CN 201510214253 A CN201510214253 A CN 201510214253A CN 104836972 A CN104836972 A CN 104836972A
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Abstract
The invention relates to a real-time shooting device with a forward time-delay storage function and a shooting method. A high-speed buffer storage unit is added between an image obtaining unit and an image output unit. An asynchronous first-in first-out memory serves as the high-speed buffer storage unit. By utilizing the characteristics that the first-in first-out function is available, writing-in and reading are carried out in sequence, and a reading pointer and a writing-in pointer are asynchronous, image data of a set period in the asynchronous first-in first-out memory can be read after an event happens, and the preposed image data is combined with real-time image data to realize that the video content before the event can be seen, so that a basis is provided to a monitoring center in a specific occasion. The shooting device provided by the invention is simple, novel and low in operation cost, and the shooting device and the shooting method which are capable of providing preposed video content have a significant effect in the specific occasion.
Description
Technical field
The present invention relates to image supervisory control technical field, refer in particular to a kind of real-time photography device and the image capture method with time delay memory function forward.
Background technology
In existing image supervisory control technology, conventional camera monitors in real time, when sending an event to camera, optical imagery converts to after complete electronic image exports picture output unit to and stores or formed data flow through Internet Transmission to setting terminal by the camera lens in camera and imageing sensor; Although existing this camera head and real-time photography mode solve the user's request of monitoring and real-time video in real time, but these graph datas can only be collected after event occurs and trigger, but in some specific occasions, as particularly important in disaster, accident, Crime Scene etc. the segment figure data in emergency circumstances before event occurs, due to existing real-time photography device record from after event occurs, in view of this, how to design a kind of there is time delay memory function forward real-time photography device and and image capture method become and have problem to be solved.
Summary of the invention
The present invention is exactly a kind of real-time photography device and the image capture method with time delay memory function forward provided for above-mentioned situation.
For achieving the above object, the present invention adopts following technical scheme: a kind of real-time photography device with time delay memory function forward, include image acquisition unit, cache storage unit and picture output unit, wherein, image acquisition unit includes camera lens and optical imagery is converted to the imageing sensor of electronic image, carry out add an iteration view data that receive be stored into the memory address unit of corresponding time in chronological order by each second for this cache storage unit, and after this cache storage unit capacity is filled with, the view data of in buffer memory one second is the earliest deleted while within up-to-date one second, view data is stored buffer memory, picture output unit has two acquisition pictorial data ends by event trigging control, wherein one end is connected with image acquisition unit and obtains realtime image data, and the other end and cache storage unit connect memory address unit corresponding to the setting-up time section that read oldest stored view data in cache storage unit.
Described cache storage unit is that asynchronous FIFO memory is called for short FIFO, the read-write clock of this asynchronous FIFO is mutually independently, wherein write pointer carries out adding an iteration from each second in chronological order and the view data received is write in the memory address unit of corresponding time, and read pointer is from the memory address unit of the setting-up time section correspondence of oldest stored view data.
Described picture output unit has view data in described setting-up time to be added in described realtime image data prior time section and is integrated into the image editing unit that has the realtime image data of time delay forward.
Described picture output unit is connected to outer monitoring central storage device to be stored in outer monitoring central storage device by the described realtime image data file with time delay forward.
Described picture output unit is connected to Surveillance center high in the clouds and is stored into Surveillance center high in the clouds so that the described realtime image data with time delay is forward formed data flow.
The image capture method of described camera head, includes following steps:
Imageing sensor converts the optical imagery of camera lens to complete electronic image and exports cache storage unit to, carry out add an iteration view data that receive be stored into the memory address unit of corresponding time in chronological order by each second for this cache storage unit, and after this cache storage unit capacity is filled with, while within up-to-date one second, view data is stored buffer memory, delete the view data of in buffer memory one second the earliest;
After event triggers, picture output unit is started working, picture output unit reads the memory address unit of the setting-up time section correspondence of cache storage unit oldest stored view data on the one hand, the realtime image data of picture output unit on the other hand in real time reading images acquiring unit, and view data in described setting-up time is added in described realtime image data prior time section is integrated into the realtime image data that has time delay forward.
Also comprise following subsequent step: be stored in outer monitoring central storage device by the described realtime image data with time delay forward.
Also comprise following subsequent step: the described realtime image data with time delay is forward formed data flow and is stored into Surveillance center high in the clouds.
Also comprise following subsequent step: authorized client reads the realtime image data with time delay forward in Surveillance center high in the clouds by access to netwoks.
After adopting said apparatus and method, the present invention by adding cache storage unit between image acquisition unit and picture output unit, adopt asynchronous FIFO memory as cache storage unit, utilize its first in first out, be sequentially written in and read, and reading pointer and write pointer are asynchronous features, thus the view data that can read after occurring in advance in a period of time of setting in asynchronous FIFO memory, this section of preposition view data and real-time view data are combined just to define and can see that video content for the previous period occurs event, thus in specific occasion, foundation is provided to Surveillance center.The simple novelty of camera head of the present invention, low, this camera head of advanced video content and the image capture method of providing of operating cost have important effect in specific occasion.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structured flowcharts;
Fig. 2 is image capture method flow chart one of the present invention;
Fig. 3 is image capture method flowchart 2 of the present invention;
Fig. 4 is the sequential bivariate table simplified schematic diagram of cache storage unit of the present invention.
Embodiment
As Figure 1-4, a kind of real-time photography device with time delay memory function forward, include image acquisition unit 10, cache storage unit 20 and picture output unit 30, wherein, image acquisition unit 10 includes camera lens 11 and optical imagery is converted to the imageing sensor 12 of electronic image, carry out add an iteration view data that receive be stored into the memory address unit of corresponding time in chronological order by each second for this cache storage unit 20, and after this cache storage unit 20 capacity is filled with, the view data of in buffer memory one second is the earliest deleted while within up-to-date one second, view data is stored buffer memory, picture output unit 30 has two acquisition pictorial data ends by event trigging control, wherein one end is connected with image acquisition unit 10 and obtains realtime image data, and the other end and cache storage unit 20 connect memory address unit corresponding to the setting-up time section that reads oldest stored view data in cache storage unit 20.
Described cache storage unit 20 is asynchronous FIFO memory abbreviation FIFO, the read-write clock of this asynchronous FIFO is mutually independently, wherein write pointer carries out adding an iteration from each second in chronological order and the view data received is write in the memory address unit of corresponding time, and read pointer is from the memory address unit of the setting-up time section correspondence of oldest stored view data.
Described picture output unit 30 has view data in described setting-up time to be added in described realtime image data prior time section and is integrated into the image editing unit that has the realtime image data of time delay forward.
Described picture output unit 30 is connected to outer monitoring central storage device 40 to be stored in outer monitoring central storage device 40 by the described realtime image data file with time delay forward.
Described picture output unit 30 is connected to Surveillance center high in the clouds 50 and is stored into Surveillance center high in the clouds 50 so that the described realtime image data with time delay is forward formed data flow.
The image capture method of described camera head, includes following steps:
As shown in Figure 2, b1-b2 step, imageing sensor 12 converts the optical imagery of camera lens 11 to complete electronic image and exports cache storage unit 20 to, b3-b4 step, carry out add an iteration view data that receive be stored into the memory address unit of corresponding time in chronological order by each second for this cache storage unit 20, and after this cache storage unit capacity is filled with, b5 step, deletes the view data of in buffer memory one second the earliest while within up-to-date one second, view data is stored buffer memory;
As shown in Figure 3, b5-b6 step, after event triggers, picture output unit 30 is started working, b7 step, picture output unit 30 1 aspect reads the memory address unit of the setting-up time section correspondence of cache storage unit 20 oldest stored view data, b8 step, the realtime image data of the real-time reading images acquiring unit 10 of picture output unit 30 another aspect, b9 step, and view data in described setting-up time is added in described realtime image data prior time section is integrated into the realtime image data that has time delay forward.
B10 step, is stored into the described realtime image data file with time delay forward in outer monitoring central storage device 40.
B11 step, forms data flow by the described realtime image data with time delay forward and is stored into Surveillance center high in the clouds 50.
Authorized client reads the realtime image data with time delay forward in Surveillance center high in the clouds 50 by access to netwoks.
Figure 4 depicts the operation principle that asynchronous FIFO memory is called for short FIFO, it forms the address storaging unit of two dimension by time and volume, when storing write, 1 second 1 second ground sequential storage in chronological order, after being filled with, the address storaging unit 1/1 of oldest stored, 2/2, ``` is deleted, follow-up longitudinal data was to reach one second, last data are stored in the time quantum of last 1 second, be 1/7 in table, 2/7, ```, in address storaging unit, the time volume of oldest stored sets reading pointer, when this asynchronous FIFO memory abbreviation FIFO is read in the access of picture output unit, just read the content in setting-up time section 20a.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. one kind has the real-time photography device of time delay memory function forward, it is characterized in that: include image acquisition unit, cache storage unit and picture output unit, wherein, image acquisition unit includes camera lens and optical imagery is converted to the imageing sensor of electronic image, carry out add an iteration view data that receive be stored into the memory address unit of corresponding time in chronological order by each second for this cache storage unit, and after this cache storage unit capacity is filled with, the view data of in buffer memory one second is the earliest deleted while within up-to-date one second, view data is stored buffer memory, picture output unit has two acquisition pictorial data ends by event trigging control, wherein one end is connected with image acquisition unit and obtains realtime image data, and the other end and cache storage unit connect memory address unit corresponding to the setting-up time section that read oldest stored view data in cache storage unit.
2. a kind of real-time photography device with time delay memory function forward according to claim 1, it is characterized in that: described cache storage unit is that asynchronous FIFO memory is called for short FIFO, the read-write clock of this asynchronous FIFO is mutually independently, wherein write pointer carries out adding an iteration from each second in chronological order and the view data received is write in the memory address unit of corresponding time, and read pointer is from the memory address unit of the setting-up time section correspondence of oldest stored view data.
3. a kind of real-time photography device with time delay memory function forward according to claim 2, is characterized in that: described picture output unit has view data in described setting-up time to be added in described realtime image data prior time section and is integrated into the image editing unit that has the realtime image data of time delay forward.
4. a kind of real-time photography device with time delay memory function forward according to claim 3, is characterized in that: described picture output unit is connected to outer monitoring central storage device to be stored in outer monitoring central storage device by the described realtime image data with time delay forward.
5. a kind of real-time photography device with time delay memory function forward according to claim 3, is characterized in that: described picture output unit is connected to Surveillance center high in the clouds and is stored into Surveillance center high in the clouds so that the described realtime image data with time delay is forward formed data flow.
6. the image capture method of the camera head according to any one of claim 1-5, is characterized in that, includes following steps:
Imageing sensor converts the optical imagery of camera lens to complete electronic image and exports cache storage unit to, carry out add an iteration view data that receive be stored into the memory address unit of corresponding time in chronological order by each second for this cache storage unit, and after this cache storage unit capacity is filled with, while within up-to-date one second, view data is stored buffer memory, delete the view data of in buffer memory one second the earliest;
After event triggers, picture output unit is started working, picture output unit reads the memory address unit of the setting-up time section correspondence of cache storage unit oldest stored view data on the one hand, the realtime image data of picture output unit on the other hand in real time reading images acquiring unit, and view data in described setting-up time is added in described realtime image data prior time section is integrated into the realtime image data that has time delay forward.
7. the image capture method of camera head according to claim 6, is characterized in that: also comprise following subsequent step: be stored in outer monitoring central storage device by the described realtime image data file with time delay forward.
8. the image capture method of camera head according to claim 7, is characterized in that: also comprise following subsequent step: the described realtime image data with time delay is forward formed data flow and is stored into Surveillance center high in the clouds.
9. the image capture method of camera head according to claim 8, is characterized in that: also comprise following subsequent step: authorized client reads the realtime image data with time delay forward in Surveillance center high in the clouds by access to netwoks.
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| CN105338317A (en) * | 2015-10-29 | 2016-02-17 | 中国邮政集团公司广州市分公司 | Monitoring method and monitoring device for mailboxes |
| CN107832659A (en) * | 2017-09-26 | 2018-03-23 | 芜湖市振华戎科智能科技有限公司 | The face identification device that data upload automatically |
| CN109222854A (en) * | 2018-11-19 | 2019-01-18 | 苏州新光维医疗科技有限公司 | Wosap tv system and its picture signal transmission method |
| CN109963101A (en) * | 2017-12-26 | 2019-07-02 | 北京君正集成电路股份有限公司 | Video recording system control method and device |
| CN110557553A (en) * | 2018-05-31 | 2019-12-10 | 杭州萤石软件有限公司 | data processing method, video acquisition equipment and readable storage medium |
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Effective date of registration: 20161017 Address after: 518000, Shenzhen, Guangdong province Longhua New District Guanlan large community and large Industrial Zone No. 33, first floor, building 101 and 2-4 Applicant after: Elite long sensing technology (Shenzhen) Limited by Share Ltd Address before: 518000 Guangdong city of Shenzhen province Baoan District Guanlan Street View Ring Industrial Zone South Building A3 Applicant before: Xu Youhua |
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