Running the red light detection method and system based on video

Abstract

The invention provides a method for detecting red light running based on video and a system thereof. The method comprises the steps as follows: vehicle entering a red light running detection area is shot for a panoramic video and a close-range video to generate a panoramic video data and a close-range video data of the detected vehicle; the state of a traffic signal lamp in the red light running detection area is shot for the panoramic video to generate traffic signal lamp state video data; a red light signal time period is obtained according to the traffic signal lamp state video data; and the panoramic video data and the close-range video data of the detected vehicle within the red light signal time period are combined and processed to generate a panoramic / close-range red light running vehicle data. The invention improves the validity of a red light running image evidence.

Description

technical field [0001] The present invention relates to image recognition technology, in particular to detection technology for running a red light in traffic management, specifically a video-based detection method and system for running a red light. Background technique [0002] Most of the red light detection schemes in the prior art use coil triggering to start the shooting of the camera. This coil triggering scheme is to bury a detection coil under the red light waiting line of each lane, and the detection coil is connected to the coil controller. , the coil control is connected to the industrial control computer through the I / O card; the red light signal is provided to the industrial control computer by the traffic light controller connected to the I / O card; each lane corresponds to a close-range camera, a supplementary light device and a license plate recognition The license plate recognizer is connected to the industrial control computer through the network interface;...

AI Technical Summary

Problems solved by technology

[0003] There are following defects in the above-mentioned scheme: (1) there is the life-span problem of detection coil itself

(2) There are problems with circuit breaking and road digging for laying and maintenance of detection coils

(3) There is a problem of damage to the detection coil by road engineering

(4) The license plate recognition and red light shooting of the above scheme are completed by different devices, so it is necessary to match the license plate recognition results with the captured pictures to generate accurate red light evidence pictures. However, in some special cases, the collaboration of different devices will There is a problem, resulting in a one-to-one correspondence between the license plate recognition results and the captured pictures

For example: the detection coil will be triggered by mistake, the license plate recognition will be wrong, etc.

(5) In the above scheme, only one industrial control computer completes the detection and control of red light detection in multiple directions at an intersection, so the complexity of the detection software is relatively high

(6) Since the above scheme adopts the method of delaying continuous shooting of running a red light after the detection coil is triggered, the quality of the first frame of the distant view picture is better, and the second frame of image taken after a delay (such as a delay of 500ms) and after another 500ms is taken There will be a problem with the third frame of the image. The position of the second frame and the third frame of the vehicle will be different, and it can only adapt to most speed vehicles. When the speed is high, the third frame may not contain vehicles.

However, this solution still does not solve the problems of the above-mentioned coil solution

[0006] In the prior art, there is also a technical solution of video detection system for running a red light and single image license plate recognition. However, this solution still does not solve the problems of the above-mentioned coil solution.

This solution still needs to be connected to the traffic light signal, and the combination of the video detection system for running a red light and the single image license plate recognition relies on time synchronization. If it cannot be fully synchronized, there will be a large error rate

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