CN111027363B - Auxiliary signal parameter analysis system - Google Patents
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Abstract
The invention relates to an auxiliary parameter analysis system, which comprises: the first camera equipment is used for carrying out camera shooting operation towards a traffic intersection so as to obtain each depth of field value of each automobile target in an imaging image, and carrying out mean value calculation on each depth of field value of each automobile target so as to obtain a reference depth of field; a focal length recognition device for determining a corresponding imaging focal length based on the reference depth of field; and the second camera equipment is used for carrying out camera shooting operation towards the traffic intersection based on the received imaging focal distance so as to obtain a corresponding instant shot image. The auxiliary parameter analysis system is reasonable in structure and simple and convenient to operate. Because the nearby low-cost camera equipment is used for acquiring each depth of field value of each automobile target in the imaging image of the camera equipment, the reference depth of field is further acquired to determine the imaging focal length of the camera equipment for performing high-precision image acquisition, and the quality of subsequent image processing is improved.
Description
Technical Field
The invention relates to the field of signal processing, in particular to an auxiliary signal parameter analysis system.
Background
One processes the signal in order to utilize it. For example, when the electrical signal is weak, it needs to be amplified; when noise is mixed, the noise needs to be filtered, and when the frequency is not suitable for transmission, modulation and demodulation are needed; when the signal is distorted, the signal needs to be balanced; when the signal types are many, identification and the like are required.
The physicochemical or mathematical processes associated with the signal are: signal generation, signal transmission, signal reception, signal analysis (i.e., knowing the characteristics of a certain signal), signal processing (i.e., converting a certain signal into another signal related to the certain signal, such as filtering out noise or interference, and converting the signal into a form that is easy to analyze and recognize), signal storage, signal detection and control, and the like. These signal-related processes may also be referred to collectively as signal processing.
And extracting characteristic signals in the event change process, and performing interference removal, analysis, synthesis, transformation, operation and other processing to obtain the process of reflecting the event change essence or information interested by a processor. Analog signal processing and digital signal processing are divided.
Disclosure of Invention
The present invention has at least the following important points:
(1) the method comprises the steps that a nearby low-cost camera device is used for obtaining each depth of field value of each automobile target in an imaging image of the camera device, mean value calculation is conducted on each depth of field value of each automobile target to obtain a reference depth of field, and an imaging focal length of the camera device for performing high-precision image acquisition is determined based on the reference depth of field, so that the focusing effect is improved, the follow-up tail number limit detection precision is guaranteed, and meanwhile the cost of field equipment is reduced;
(2) under the conditions of high image resolution, large data volume and large power consumption, the alpha mean filtering process with large computation amount is avoided, so that the overall power consumption level of the system is maintained at the same level.
According to an aspect of the present invention, there is provided an assisted parameter resolution system, the system comprising: the first camera equipment is arranged on a cross bar above the traffic intersection and used for carrying out camera shooting operation towards the traffic intersection so as to obtain each depth of field value of each automobile target in the imaging image; the first camera device is further used for carrying out mean value calculation on each depth value of each automobile target so as to obtain the reference depth.
More specifically, in the assisted parameter resolution system, the system further includes: and the focal length recognition equipment is arranged on a cross bar above the traffic intersection, is connected with the first camera equipment and is used for determining a corresponding imaging focal length based on the reference depth of field.
More specifically, in the assisted parameter resolution system, the system further includes: the second camera shooting device is arranged beside the first camera shooting device, is less than a preset distance threshold value from the first camera shooting device, is connected with the focal length recognition device, and is used for shooting towards a traffic intersection based on the received imaging focal length so as to obtain a corresponding instant shot image; the resolution of the image acquired by the first camera shooting device is smaller than that of the image acquired by the second camera shooting device; the signal identification equipment is arranged on a cross bar above the traffic intersection, is connected with the second camera equipment, and is used for receiving the instant shot image and carrying out field analysis operation on the resolution of the instant shot image so as to obtain and output corresponding field resolution; the data extraction device is connected with the signal identification device and used for receiving the field resolution, determining a resolution level which is in direct proportion to the field resolution and outputting the resolution level; the target detection equipment is respectively connected with the data extraction equipment and the signal identification equipment and is used for identifying each target area where each target in the instant shot image is respectively located when the received resolution level is not over the limit; the target detection equipment is also used for not identifying the target area of the instant shot image when the received resolution level exceeds the limit; the targeted filtering device is respectively connected with the target detection device and the signal identification device, and is used for executing alpha mean filtering processing on the instant shot image to obtain and output a mean filtering image corresponding to the instant shot image when the received resolution level is not over the limit: and performing alpha mean value filtering processing on a target area of the instant shooting image, and not performing alpha mean value filtering processing on a non-target area of the instant shooting image.
The auxiliary parameter analysis system is reasonable in structure and simple and convenient to operate. Because the nearby low-cost camera equipment is used for acquiring each depth of field value of each automobile target in the imaging image of the camera equipment, the reference depth of field is further acquired to determine the imaging focal length of the camera equipment for performing high-precision image acquisition, and the quality of subsequent image processing is improved.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic external view of a second image pickup apparatus of an auxiliary parameter analysis system according to an embodiment of the present invention.
Detailed Description
An embodiment of the auxiliary parameter analysis system of the present invention will be described in detail below with reference to the accompanying drawings.
The tail number restriction system is a traffic system for alleviating urban traffic pressure and promoting growth. During the 2008 Beijing Olympic Games test, Beijing began a one-two number restriction. On the single-number day, only the private car with the tail number of the car number being the single number can get on the road, and on the double-number day, only the private car with the tail number of the car number being the double number can get on the road.
The measures are implemented to play a role in relieving urban traffic jam. In 10 months in 2012, Beijing City traffic Commission shows that the research of 2013 measures for guaranteeing traffic smoothness is started, and the single-double number restriction of motor vehicles in a specific region at a specific time period is evaluated; the days from 10 month and 8 to 11 month and 7 days, and the days from 4 months and 10 days in 2015, which are shown by the public security traffic management department in Beijing City, the pure electric passenger car (new energy automobile) is not within the limit range of the tail number of the motor vehicle, and the specific execution time is separately published. And (4) taking a restriction measure for a month tail in the taxi test period in Lanzhou city, and temporarily stopping the restriction measure for single and double numbers. And from 1 month and 16 days in 2013, the single-double-number restriction is implemented in the Minam for the heavy polluted weather.
In the prior art, effective automatic focusing operation cannot be realized when image capturing and violation monitoring are carried out on the camera equipment at the traffic intersection, the power consumption of the whole system is higher due to the fact that the automatic focusing operation amount of the camera equipment for executing high-precision violation monitoring is larger due to high image resolution, and in addition, the image capturing quality is also influenced by the fact that image capturing is carried out while focusing.
In order to overcome the defects, the invention builds an auxiliary parameter analysis system, and can effectively solve the corresponding technical problem.
Fig. 1 is a schematic external view of a second image pickup apparatus of an auxiliary parameter analysis system according to an embodiment of the present invention.
An assisted parameter resolution system according to an embodiment of the present invention is shown comprising:
the first camera equipment is arranged on a cross bar above the traffic intersection and used for carrying out camera shooting operation towards the traffic intersection so as to obtain each depth of field value of each automobile target in the imaging image;
the first camera device is further used for carrying out mean value calculation on each depth value of each automobile target so as to obtain the reference depth.
Next, a specific configuration of the auxiliary parameter analysis system according to the present invention will be further described.
The auxiliary parameter analysis system may further include:
and the focal length recognition equipment is arranged on a cross bar above the traffic intersection, is connected with the first camera equipment and is used for determining a corresponding imaging focal length based on the reference depth of field.
The auxiliary parameter analysis system may further include:
the second camera shooting device is arranged beside the first camera shooting device, is less than a preset distance threshold value from the first camera shooting device, is connected with the focal length recognition device, and is used for shooting towards a traffic intersection based on the received imaging focal length so as to obtain a corresponding instant shot image;
the resolution of the image acquired by the first camera shooting device is smaller than that of the image acquired by the second camera shooting device;
the signal identification equipment is arranged on a cross bar above the traffic intersection, is connected with the second camera equipment, and is used for receiving the instant shot image and carrying out field analysis operation on the resolution of the instant shot image so as to obtain and output corresponding field resolution;
the data extraction device is connected with the signal identification device and used for receiving the field resolution, determining a resolution level which is in direct proportion to the field resolution and outputting the resolution level;
the target detection equipment is respectively connected with the data extraction equipment and the signal identification equipment and is used for identifying each target area where each target in the instant shot image is respectively located when the received resolution level is not over the limit;
the target detection equipment is also used for not identifying the target area of the instant shot image when the received resolution level exceeds the limit;
the targeted filtering device is respectively connected with the target detection device and the signal identification device, and is used for executing alpha mean filtering processing on the instant shot image to obtain and output a mean filtering image corresponding to the instant shot image when the received resolution level is not over the limit: performing alpha mean filtering processing on a target area of the instant shooting image, and not performing alpha mean filtering processing on a non-target area of the instant shooting image;
the targeted filtering equipment is also used for outputting the instant shooting image as an average filtering image when the received resolution level exceeds the limit;
the differential method sharpening device is connected with the targeted filtering device and is used for carrying out spatial differential method sharpening processing on the received mean filtering image so as to obtain and output a corresponding differential method sharpened image;
the distortion processing device is connected with the differential method sharpening device and used for receiving the differential method sharpened image and executing distortion correction processing on the received differential method sharpened image so as to obtain and output a corresponding distortion processed image;
the traffic control detection equipment is connected with the distortion processing equipment and is used for identifying each license plate number in the distortion processing image and outputting the license plate number with the tail number of the current day forbidden when the tail number of the current day forbidden exists in each license plate number as a traffic control violation number;
the frequency division duplex communication equipment is connected with the traffic control detection equipment and is used for wirelessly sending the received traffic control violation number to a server of a remote control room;
wherein the target detection device, the targeted filtering device and the differential sharpening device share the same timing clock.
In the auxiliary parameter analysis system:
the target detection device, the targeted filtering device and the differential sharpening device are integrated on the same printed circuit board.
The auxiliary parameter analysis system may further include:
the block processing equipment is connected with the second camera equipment and used for receiving the instant shot image;
the blocking processing device is further configured to block the instant shot image based on the resolution of the instant shot image to obtain a plurality of corresponding blocking areas.
The auxiliary parameter analysis system may further include:
the blurring analysis device is connected with the blocking processing device and used for receiving the plurality of blocking areas, extracting the mean value of pixel values of each pixel point of each blocking area as an area pixel value corresponding to the blocking area, and determining the mean square error of the pixel values of each area of each blocking area;
the blurring analysis equipment is further used for sending out a blurring control signal when the mean square error exceeds the limit, and sending out a blurring control signal when the mean square error does not exceed the limit.
In the auxiliary parameter analysis system:
in the blocking processing device, blocking the live view image based on the resolution of the live view image to obtain a plurality of corresponding block regions includes: the higher the resolution of the instant shot image is, the greater the number of the obtained plurality of block areas, and the same size of the plurality of block areas.
In the auxiliary parameter analysis system:
the virtualization analysis device is further connected to the fdd communication device, and configured to send the non-virtualized control signal or the virtualized control signal to the fdd communication device.
In the auxiliary parameter analysis system:
the frequency division duplex communication equipment is also used for wirelessly sending the non-virtualized control signal or the virtualized control signal to a display screen of the remote control room for real-time display.
In addition, frequency division duplex means that uplink and downlink transmissions are performed on different frequencies. In the first and second generation cellular systems, FDD technology is basically used for duplex transmission. In particular, in the first generation cellular systems, since continuous baseband signals are transmitted, duplex uplink and downlink channels must be provided using different frequencies. In the first generation cellular systems, in which FDD is used for continuous information transmission, frequency synthesizers for generating different carrier frequencies are required at both the transmitting and receiving ends, and a duplex filter for preventing the transmission signal from leaking to the receiver is required at the receiving end. In addition, in order to facilitate the fabrication of the duplexer, a certain frequency interval is required between the transmission and reception carrier frequencies. In the second generation of systems such as GSM, IS-136 and IS-95, FDD technology IS also used. In these systems, since the information is transmitted in time slots, the transmission and reception can be performed in different time slots, and the transmission signal of the mobile station or the base station does not interfere with the receiver. So, despite the FDD technique employed, no expensive duplex filters are required.
The FDD mode is characterized by receiving and transmitting in two symmetric frequency channels separated (190 MHz between uplink and downlink frequencies), and separating the receiving and transmitting channels by guard bands.
By adopting the technologies of packet switching and the like, the bottleneck of the second generation development can be broken through, the high-speed data service can be realized, the frequency spectrum utilization rate can be improved, and the system capacity can be increased. FDD must provide third generation services using paired frequencies, i.e., within a bandwidth of every 2x5 MHz. The mode can fully utilize the uplink and downlink frequency spectrums when supporting the symmetric service, but the frequency spectrum utilization rate is greatly reduced (about 40 percent of the frequency spectrum utilization rate is reduced due to low uplink load) when the asymmetric packet switching (Internet) works, and in this regard, the TDD mode has incomparable advantages compared with the FDD mode.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (2)
1. An assisted parameter resolution system, comprising:
the first camera equipment is arranged on a cross bar above the traffic intersection and used for carrying out camera shooting operation towards the traffic intersection so as to obtain each depth of field value of each automobile target in the imaging image;
the first camera device is further used for carrying out mean value calculation on each depth value of each automobile target to obtain a reference depth;
the focal length recognition device is arranged on a cross bar above the traffic intersection, is connected with the first camera device and is used for determining a corresponding imaging focal length based on the reference depth of field;
the second camera shooting device is arranged beside the first camera shooting device, is less than a preset distance threshold value from the first camera shooting device, is connected with the focal length recognition device, and is used for shooting towards a traffic intersection based on the received imaging focal length so as to obtain a corresponding instant shot image;
the resolution of the image acquired by the first camera shooting device is smaller than that of the image acquired by the second camera shooting device;
the signal identification equipment is arranged on a cross bar above the traffic intersection, is connected with the second camera equipment, and is used for receiving the instant shot image and carrying out field analysis operation on the resolution of the instant shot image so as to obtain and output corresponding field resolution;
the data extraction device is connected with the signal identification device and used for receiving the field resolution, determining a resolution level which is in direct proportion to the field resolution and outputting the resolution level;
the target detection equipment is respectively connected with the data extraction equipment and the signal identification equipment and is used for identifying each target area where each target in the instant shot image is respectively located when the received resolution level is not over the limit;
the target detection equipment is also used for not identifying the target area of the instant shot image when the received resolution level exceeds the limit;
the targeted filtering device is respectively connected with the target detection device and the signal identification device, and is used for executing alpha mean filtering processing on the instant shot image to obtain and output a mean filtering image corresponding to the instant shot image when the received resolution level is not over the limit: performing alpha mean filtering processing on a target area of the instant shooting image, and not performing alpha mean filtering processing on a non-target area of the instant shooting image;
the targeted filtering equipment is also used for outputting the instant shooting image as an average filtering image when the received resolution level exceeds the limit;
the differential method sharpening device is connected with the targeted filtering device and is used for carrying out spatial differential method sharpening processing on the received mean filtering image so as to obtain and output a corresponding differential method sharpened image;
the distortion processing device is connected with the differential method sharpening device and used for receiving the differential method sharpened image and executing distortion correction processing on the received differential method sharpened image so as to obtain and output a corresponding distortion processed image;
the traffic control detection equipment is connected with the distortion processing equipment and is used for identifying each license plate number in the distortion processing image and outputting the license plate number with the tail number of the current day forbidden when the tail number of the current day forbidden exists in each license plate number as a traffic control violation number;
the frequency division duplex communication equipment is connected with the traffic control detection equipment and is used for wirelessly sending the received traffic control violation number to a server of a remote control room;
wherein the target detection device, the targeted filtering device and the differential sharpening device share the same timing clock;
the block processing equipment is connected with the second camera equipment and used for receiving the instant shot image;
the blocking processing device is further used for blocking the instant shot image based on the resolution of the instant shot image to obtain a plurality of corresponding blocking areas;
wherein obtaining the corresponding plurality of partitioned areas comprises: the higher the resolution of the instant shot image is, the more the number of the obtained multiple block areas is, and the sizes of the multiple block areas are the same;
the blurring analysis device is connected with the blocking processing device and used for receiving the plurality of blocking areas, extracting the mean value of pixel values of each pixel point of each blocking area as an area pixel value corresponding to the blocking area, and determining the mean square error of the pixel values of each area of each blocking area;
the blurring analysis equipment is further used for sending a blurring control signal when the mean square error exceeds the limit, and sending a blurring control signal when the mean square error does not exceed the limit;
the virtualization analysis device is further connected to the fdd communication device, and configured to send the non-virtualized control signal or the virtualized control signal to the fdd communication device;
the frequency division duplex communication equipment is also used for wirelessly sending the non-virtualized control signal or the virtualized control signal to a display screen of the remote control room for real-time display.
2. The assisted parameter resolution system of claim 1, wherein:
the target detection device, the targeted filtering device and the differential sharpening device are integrated on the same printed circuit board.
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Correction item: Patentee|Address Correct: Lishui Xinbeilei Technology Co.,Ltd.|323000 Room 862, 8th Floor, Building 3, Lvgu Information Industrial Park, No. 368, Chengbei Street, Liandu District, Lishui City, Zhejiang Province False: Liu Xiaoying|213164 No.31 Gehu Middle Road, Wujin District, Changzhou City, Jiangsu Province Number: 09-02 Volume: 37 Correction item: Patentee|Address Correct: Lishui Xinbeilei Technology Co.,Ltd.|323000 Room 862, 8th Floor, Building 3, Lvgu Information Industrial Park, No. 368, Chengbei Street, Liandu District, Lishui City, Zhejiang Province False: Liu Xiaoying|213164 No.31 Gehu Middle Road, Wujin District, Changzhou City, Jiangsu Province Number: 09-02 Page: The title page Volume: 37 |
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