Key vehicle investigation system based on safe investigation

Abstract

The application discloses a key vehicle checking system based on safety checking, relates to the technical field of vehicle checking, and solves the technical problem that if a key vehicle replaces a license plate, a checking system cannot determine the key vehicle; license plates of the key vehicle and driving habits of the key vehicle under different vehicle speed states are acquired in advance, and the driving habits of corresponding drivers are set as driving templates; when external vehicle parameters are acquired through a checking point, the license plates are compared in advance; if the license plate comparison is correct, the vehicle passing through the checking point is the key vehicle; if the license plate comparison is incorrect, the vehicle passing through the checking point may be the key vehicle; whether the key vehicle replaces the license plate is determined through comparison of a driving picture and a driving template; the key vehicle is checked again by adopting the method, the checking result is more accurate, the accuracy is improved, and the working strength of external operators is reduced.

Description

Technical Field

[0001] This invention belongs to the field of vehicle inspection technology, specifically a key vehicle inspection system based on safety inspection. Background Technology

[0002] As traffic control measures are gradually strengthened, traffic management and legal departments have marked some illegal vehicles as key vehicles for investigation. For these key vehicles, a corresponding key vehicle investigation system is used to investigate and deal with them.

[0003] The invention disclosed in patent publication number CN111161546B provides a method and system for screening key vehicles in a traffic management system. The system first obtains location data reported by the positioning module of key monitored vehicles from the traffic commission system to identify candidate vehicles suspected of fatigue driving and add them to a blacklist. Then, based on images captured by checkpoint equipment, it identifies vehicles still in operation and suspected of fatigue driving, and uses them as target vehicles for dynamic early warning and control. The early warning server sends images of the target vehicles captured by the checkpoint equipment, along with warning information such as the last intersection they appeared at, to the mobile police POS terminals used by police officers on the road. The mobile police POS terminals display the warning information to the police officers in real time, enabling them to identify target vehicles based on the image information and screen for fatigue driving, thus improving the timeliness and accuracy of screening key vehicles for fatigue driving.

[0004] Screening systems designed to monitor key vehicles typically use recognition sensors installed at designated checkpoints to acquire vehicle license plates. These plates are then compared with those of key vehicles to allow for real-time monitoring. However, these systems still have the following shortcomings that require improvement during the actual screening process:

[0005] Some illegal vehicles change their license plates to avoid being photographed by surveillance cameras. If a key vehicle changes its license plate, the screening system cannot determine whether it is the corresponding key vehicle. Summary of the Invention

[0006] The present invention aims to at least solve one of the technical problems existing in the prior art; to this end, the present invention proposes a key vehicle screening system based on security screening, which is used to solve the technical problem that the screening system cannot identify key vehicles if the license plate of a key vehicle has been changed.

[0007] To achieve the above objectives, an embodiment of the first aspect of the present invention provides a key vehicle screening system based on security screening, comprising:

[0008] The vehicle parameter acquisition terminal is used to acquire vehicle parameter data of key vehicles, including license plate data and vehicle driving video. The acquired vehicle parameter data of key vehicles is sent to the parameter processing unit.

[0009] The parameter processing unit processes the vehicle parameter data of key vehicles. It extracts the license plates of key vehicles in advance based on the license plate data and extracts three different driving images from the vehicle driving video. Based on the three different driving images, it forms the habit parameters of different key vehicles. Different destination vehicles are marked with a label i. The habit parameters are bound with the license plates to generate a bundled data packet, which is transmitted to the habit data packet. The habit data packet stores such bundled data packets.

[0010] The parameter acquisition end of the checkpoint acquires vehicle images of the vehicle checkpoints sequentially and transmits the acquired vehicle images to the license plate matching unit. The license plate matching unit preprocesses the vehicle images, extracts the license plates of key vehicles from the custom data package, compares the license plates with the license plate images inside the vehicle images, and transmits the comparison results to the data processing unit.

[0011] The data processing unit reprocesses the vehicle image, extracts the driving image from the driver's cab, compares the driving image with the corresponding comparison template in the custom data package, and generates different signals to be processed based on the comparison results.

[0012] Preferably, the parameter processing unit processes the vehicle parameter data of key vehicles in the following manner:

[0013] S1. Extract license plate data in advance, extract the license plate numbers of key vehicles from the license plate data, and mark the extracted license plate numbers as license plate numbers to be processed;

[0014] S2. Obtain three different sets of driving images with vehicle speeds of 15km / h, 40km / h, and 80km / h from the vehicle driving video. Preprocess the first set of driving images with a vehicle speed of 15km / h to form the first set of driving templates. Convert the corresponding vehicle speed into a vehicle speed mark of 15 and bind the vehicle speed mark with the first set of driving templates to generate the first set of comparison templates.

[0015] S3. Process the second set of driving images and the third set of driving images in the same way as in step S2 to obtain the second set of comparison templates and the third set of comparison templates.

[0016] S4. Bundle the license plate number to be processed, the first set of comparison templates, the second set of comparison templates, and the third set of comparison templates to generate a bundled data packet, and transmit it to the custom data packet for storage. Then process other different key vehicles in the same way to obtain multiple sets of bundled data packets, and store the multiple sets of bundled data packets in the custom data packet in sequence.

[0017] Preferably, the license plate matching unit preprocesses the vehicle image in the following way:

[0018] Extract the license plate image from the vehicle image and label the license plate image as CP. i , where i represents different key vehicles;

[0019] According to the license plate image CP i The license plate parameters are extracted from the data package containing the license plates of key vehicles. If the license plate data is consistent, a warning signal to be processed is generated and transmitted to an external terminal.

[0020] If the license plate data is inconsistent, a reprocessing signal is generated, and the reprocessing signal and the vehicle image are transmitted to the data processing unit.

[0021] Preferably, the data processing unit reprocesses the vehicle image in the following manner:

[0022] P1. The data processing unit extracts the bundled data packet of the corresponding key vehicle according to the received reprocessing signal and the marker i, and extracts the corresponding three sets of comparison templates according to the bundled data packet.

[0023] P2. Compare the driving images with the three sets of comparison templates sequentially to obtain the corresponding comparison parameters, and mark the comparison parameters as BD1. i BD2 i and BD3 i Comparison parameter BD1 i The overlap parameter between the driving image and the first set of comparison templates is BD2. i The overlap parameters between the driving image and the second set of comparison templates are represented by the comparison parameter BD3. i The parameters representing the overlap between the driving image and the third set of comparison templates;

[0024] P3, Comparison parameters BD1 from three sets i BD2 i and BD3 i Find the maximum value and mark it as ZD. i and set the maximum value ZD i Compare with the preset value X1, and when the maximum value ZD is reached... i When X ≤ X1, no signal is generated; when the maximum value ZD is reached... iWhen the value is greater than X1, a recognition signal to be processed is generated and sent to an external terminal.

[0025] Preferably, the external terminal is an operating terminal for external operators. The external operators analyze and process the driving image based on the identification signal to be processed to check whether the license plate of a key vehicle has been changed.

[0026] Compared with existing technologies, the beneficial effects of this invention are as follows: The license plates of key vehicles and their driving habits at different speeds are acquired in advance, and the driving habits of the corresponding drivers are set as driving templates. When external vehicle parameters are obtained through checkpoints, the license plates are compared in advance. If the license plate comparison is correct, the vehicle passing through the checkpoint is a key vehicle; if the license plate comparison is incorrect, the vehicle passing through the checkpoint may still be a key vehicle. By comparing the driving images with the driving templates, it is determined whether the key vehicle has changed its license plate. Simultaneously, the driving images are transmitted to an external terminal for external personnel to judge. Using this method to re-check key vehicles makes the check results more accurate, improves accuracy, and reduces the workload of external operators. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the principle framework of the present invention. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 This application provides a key vehicle screening system based on security screening, including a vehicle parameter acquisition terminal, a license plate matching unit, a data processing unit, a screening point parameter acquisition terminal, a parameter processing unit, and a custom data package;

[0030] The output terminal of the vehicle parameter acquisition terminal is electrically connected to the input terminal of the parameter processing unit, the output terminal of the parameter processing unit is electrically connected to the input terminal of the habitual data packet, the license plate matching unit is bidirectionally connected to the habitual data packet, the output terminal of the investigation point parameter acquisition terminal is electrically connected to the input terminal of the license plate matching unit, and the data processing unit is bidirectionally connected to the habitual data packet.

[0031] The vehicle parameter acquisition terminal is used to acquire vehicle parameter data of key vehicles. The vehicle parameter data includes license plate data and a 30-minute video of the vehicle driving. The acquired vehicle parameter data of key vehicles is sent to the parameter processing unit.

[0032] The parameter processing unit processes the vehicle parameter data of key vehicles. It pre-extracts the license plates of key vehicles based on license plate data and extracts three different sets of driving images from the vehicle's driving video. Based on these three sets of driving images, it forms custom parameters for different key vehicles. Vehicles with different destinations are marked with a label 'i'. The custom parameters are then bundled with the license plates to generate a bundled data packet, which is transmitted to the custom data packet. The custom data packet stores this type of bundled data packet. The processing steps are as follows:

[0033] S1. Extract license plate data in advance, extract the license plate numbers of key vehicles from the license plate data, and mark the extracted license plate numbers as license plate numbers to be processed;

[0034] S2. Obtain three different sets of driving images with vehicle speeds of 15km / h, 40km / h, and 80km / h from the vehicle driving video. Preprocess the first set of driving images with a vehicle speed of 15km / h to form the first set of driving templates. Convert the corresponding vehicle speed into a vehicle speed mark of 15 and bind the vehicle speed mark with the first set of driving templates to generate the first set of comparison templates.

[0035] S3. Process the second set of driving images and the third set of driving images in the same way as in step S2 to obtain the second set of comparison templates and the third set of comparison templates.

[0036] S4. Bundle the license plate number to be processed, the first set of comparison templates, the second set of comparison templates, and the third set of comparison templates to generate a bundled data packet, and transmit it to the custom data packet for storage. Then process other different key vehicles in the same way to obtain multiple sets of bundled data packets, and store the multiple sets of bundled data packets in the custom data packet in sequence.

[0037] The parameter acquisition terminal at the checkpoint sequentially acquires vehicle images at the checkpoints. The images are acquired by cameras located at the checkpoints and transmitted to the license plate matching unit. The license plate matching unit preprocesses the vehicle images, extracts the license plates of key vehicles from the custom data package, compares the license plates with the license plate images within the vehicle images, and transmits the comparison results to the data processing unit. The preprocessing method is as follows:

[0038] Extract the license plate image from the vehicle image and label the license plate image as CP. i, where i represents different key vehicles;

[0039] According to the license plate image CP i The license plate parameters are extracted from the data package containing the license plates of key vehicles. If the license plate data is consistent, a warning signal to be processed is generated and transmitted to an external terminal.

[0040] If the license plate data is inconsistent, a reprocessing signal is generated, and the reprocessing signal and the vehicle image are transmitted to the data processing unit.

[0041] The data processing unit reprocesses the vehicle image, extracts driving images from the driver's cab within the vehicle image, and compares these driving images sequentially with corresponding comparison templates within the custom data package. Based on the comparison results, different signals to be processed are generated. The reprocessing method is as follows:

[0042] P1. The data processing unit extracts the bundled data packet of the corresponding key vehicle according to the received reprocessing signal and the marker i, and extracts the corresponding three sets of comparison templates according to the bundled data packet.

[0043] P2. Compare the driving image with the three sets of comparison templates sequentially to obtain the corresponding comparison parameters (specifically, the comparison parameters are the overlap parameters; if the overlap parameter is 90%, it means that the driving image and one of the comparison templates have 90% overlap). Mark the comparison parameters as BD1. i BD2 i and BD3 i Comparison parameter BD1 i The overlap parameter between the driving image and the first set of comparison templates is BD2. i The overlap parameters between the driving image and the second set of comparison templates are represented by the comparison parameter BD3. i The parameters representing the overlap between the driving image and the third set of comparison templates;

[0044] P3, Comparison parameters BD1 from three sets i BD2 i and BD3 i Find the maximum value and mark it as ZD. i and set the maximum value ZD i Compare with the preset value X1, and when the maximum value ZD is reached... i When X ≤ X1, no signal is generated; when the maximum value ZD is reached... i When the value is greater than X1, a recognition signal to be processed is generated and sent to an external terminal. The external operator analyzes and processes the driving image based on the recognition signal to check whether a key vehicle has changed its license plate.

[0045] The data in the above formula are all calculated by removing the dimensions and taking the numerical values. The formula is the closest to the real situation obtained by software simulation of a large amount of collected data. The preset parameters and preset thresholds in the formula are set by those skilled in the art according to the actual situation or obtained through simulation of a large amount of data.

[0046] The working principle of this invention is as follows: The vehicle parameter data of key vehicles is acquired in advance through the vehicle parameter acquisition terminal, and the acquired vehicle parameter data is sent to the parameter processing unit for processing. The parameter processing unit obtains the license plate of the key vehicle and three sets of comparison templates based on the vehicle parameter data, and bundles the corresponding license plate and three sets of comparison templates into a data packet and stores it in the conventional data packet.

[0047] Then, through the parameter acquisition terminal of the checkpoint, the vehicle images of the vehicle checkpoint are acquired sequentially, and the acquired vehicle images are transmitted to the license plate matching unit. The license plate matching unit compares the license plate in the vehicle image with the license plate stored in the habit data package. The data processing unit processes the vehicle image again according to the comparison result, extracts the driving picture in the driver's seat from the vehicle image, and compares the driving picture with the corresponding comparison template in the habit data package to obtain the comparison parameters. Based on the value of the comparison parameters, different signals to be processed are generated and transmitted to the external terminal. Based on the signals to be processed, the driving picture is analyzed and processed to check whether the license plate of the key vehicle has been changed.

[0048] The system pre-collects information on the license plates of key vehicles and their driving habits at different speeds, and sets the driving habits of the corresponding drivers as driving templates. When external vehicle parameters are obtained through checkpoints, the license plates are pre-compared. If the license plate match is correct, the vehicle passing through the checkpoint is a key vehicle; if the match is incorrect, the vehicle passing through the checkpoint may still be a key vehicle. By comparing the driving images with the driving templates, it is determined whether the key vehicle has changed its license plate. The driving images are then sent to external terminals for external personnel to make a judgment. By using this method to re-check key vehicles, the check results can be made more accurate, improving the accuracy rate while reducing the workload of external operators.

[0049] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A key vehicle screening system based on safety inspection, characterized in that, include: The vehicle parameter acquisition terminal is used to acquire vehicle parameter data of key vehicles, including license plate data and vehicle driving video. The acquired vehicle parameter data of key vehicles is sent to the parameter processing unit. The parameter processing unit processes the vehicle parameter data of key vehicles. It pre-extracts the license plates of key vehicles based on license plate data and extracts three different sets of driving images from the vehicle's driving video. Based on these three sets of images, it generates custom parameters for different key vehicles. Vehicles with different destinations are marked with a label 'i'. The custom parameters are then bundled with the license plates to generate a bundled data packet, which is transmitted to the custom data packet. The custom data packet stores these bundled data packets in the following manner: S1. Pre-extract license plate data, extract the license plate numbers of key vehicles from the license plate data, and mark the extracted license plate numbers as license plate numbers to be processed; S2. Obtain three different sets of driving images with vehicle speeds of 15km / h, 40km / h, and 80km / h from the vehicle driving video. Preprocess the first set of driving images with a vehicle speed of 15km / h to form the first set of driving templates. Convert the corresponding vehicle speed into a vehicle speed mark of 15 and bind the vehicle speed mark with the first set of driving templates to generate the first set of comparison templates. S3. Process the second set of driving images and the third set of driving images in the same way as in step S2 to obtain the second set of comparison templates and the third set of comparison templates. S4. Bundle the license plate number to be processed, the first set of comparison templates, the second set of comparison templates, and the third set of comparison templates to generate a bundled data packet, and transmit it to the custom data packet for storage. Then process other different key vehicles in the same way to obtain multiple sets of bundled data packets, and store the multiple sets of bundled data packets in the custom data packet in sequence. The parameter acquisition end of the checkpoint acquires vehicle images of the vehicle checkpoints sequentially and transmits the acquired vehicle images to the license plate matching unit. The license plate matching unit preprocesses the vehicle images, extracts the license plates of key vehicles from the custom data package, compares the license plates with the license plate images inside the vehicle images, and transmits the comparison results to the data processing unit. The data processing unit reprocesses the vehicle image, extracts the driving image from the driver's cab, compares the driving image with the corresponding comparison template in the custom data package, and generates different signals to be processed based on the comparison results.

2. The key vehicle screening system based on safety screening according to claim 1, characterized in that, The license plate matching unit preprocesses the vehicle image in the following way: Extract the license plate image from the vehicle image and label the license plate image as CP. i , where i represents different key vehicles; According to the license plate image CP i The license plate parameters are extracted from the data package containing the license plates of key vehicles. If the license plate data is consistent, a warning signal to be processed is generated and transmitted to an external terminal. If the license plate data is inconsistent, a reprocessing signal is generated, and the reprocessing signal and the vehicle image are transmitted to the data processing unit.

3. The key vehicle screening system based on safety screening according to claim 2, characterized in that, The data processing unit reprocesses the vehicle images in the following way: P1. The data processing unit extracts the bundled data packet of the corresponding key vehicle according to the received reprocessing signal and the marker i, and extracts the corresponding three sets of comparison templates according to the bundled data packet. P2. Compare the driving images with the three sets of comparison templates sequentially to obtain the corresponding comparison parameters, and mark the comparison parameters as BD1. i BD2 i and BD3 i Comparison parameter BD1 i The overlap parameter between the driving image and the first set of comparison templates is BD2. i The overlap parameters between the driving image and the second set of comparison templates are represented by the comparison parameter BD3. i The parameters representing the overlap between the driving image and the third set of comparison templates; P3, Comparison parameters BD1 from three sets i BD2 i and BD3 i Get the maximum value and mark this maximum value as ZD. i and set the maximum value ZD i Compare with the preset value X1, and when the maximum value ZD is reached... i When X ≤ X1, no signal is generated; when the maximum value ZD is reached... i When the value is greater than X1, a recognition signal to be processed is generated and sent to an external terminal.

4. The key vehicle screening system based on safety screening according to claim 3, characterized in that, The external terminal is the operating terminal for external operators. Based on the identification signal to be processed, the external operators analyze and process the driving image to check whether the license plate of the key vehicle has been changed.

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