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A system and method for capturing images of running a red light under low-illumination robustness

A red-light running and low-illumination technology, applied in the field of red-light capture systems, can solve the problems of missed or wrong shots, robustness, etc., and achieve the effect of preventing missed or wrong detections

Active Publication Date: 2018-03-16
OB TELECOM ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large changes in outdoor weather conditions, the existing red light capture technology may miss or mistakenly take pictures under low-light conditions, and low-light conditions are often more likely to cause serious traffic safety problems. Therefore, in low-light conditions Under the illumination conditions, it is urgent to solve the problem of making the red light capture system more complete and robust, and accurate capture

Method used

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  • A system and method for capturing images of running a red light under low-illumination robustness

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Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1, a robust red light running capture system under low illumination.

[0041] The red light running capture system of the present invention includes:

[0042] 1. The camera unit is used to shoot video images of the detected area; in order to meet the shooting definition requirements, the camera unit can use an integrated high-definition network camera with more than 7 million pixels.

[0043] 2. The red light detector is used to count the proportion of red light areas judged to be super red pixels.

[0044] The judgment rule of the red light detector is: count the proportion of super red pixels in the red light area. When the proportion of super red pixels is greater than 90%, it is judged as red light, otherwise it is not red light.

[0045] The judgment rule of the super red pixel is: R>G+50&&R>B+50&&R>150&&G<100&&B<100, wherein R, G, B are the RGB value components of the pixel respectively, && means satisfying the conditions at the same time.

[0046] 3....

Embodiment 2

[0051] Embodiment 2, a kind of robust red light capture method under low illumination, refer to the attached figure 1.

[0052] The snapping method for running a red light of the present invention comprises the following steps:

[0053] 1) Obtain a frame of image SrcImg from the camera unit;

[0054] 2) Calculate the grayscale image Gray_cur of the frame image SrcImg and the data RGBImg of the RGB space;

[0055] 3) Use the current grayscale image and the previous frame grayscale image to make a frame difference to obtain the foreground;

[0056] 4) If the proportion of foreground pixels is greater than a certain threshold (10%), start the license plate detector and the tail light detector in the foreground area at the same time to detect the license plate and tail lights;

[0057] 5) According to the position relationship between the license plate and the vehicle, the range of the license plate is expanded to obtain the target position of the vehicle;

[0058] 6) Track th...

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Abstract

The invention provides a robust red-light-running snapshotting system under low illumination, which comprises a camera shooting image, a red light detector, a red-light-running rule setting module, a red-light-running video processing module and a snapshotting unit. The invention further provides a robust red-light-running snapshotting method under low illumination, which comprises the steps of acquiring a frame image, calculating to obtain a grayscale image of the frame image and data in an RGB space, acquiring a frame difference of the current grayscale image and a previous frame grayscale image to obtain a foreground, tracking a vehicle by means of meanshift through a vehicle tracker, tracking vehicle tail lamps by using a distance-color matching method through a vehicle tail lamp tracker, and performing red-light-running snapshotting through the acquired motion trails of the vehicle targets. The robust red-light-running snapshotting system can record relative position information of the vehicle and the vehicle tail lamps through initializing relation between the vehicle and the vehicle tail lamps during the tracking process, and can utilize the initialized position information when adjusting relative positions of the vehicle and the vehicle tail lamps, thereby positioning the vehicle accurately through the vehicle tail lamps.

Description

technical field [0001] The invention relates to an intelligent video monitoring system, in particular to a system and method for snapping photos of running a red light. Background technique [0002] With the development of my country's transportation technology, motor vehicle violations began to breed and spread, seriously threatening urban road traffic safety, and the resulting road traffic safety problems have increasingly become an important restrictive factor in social and economic development. As a simple, convenient, high-efficiency, low-cost and non-contact monitoring technology, intelligent video surveillance technology can effectively alleviate the contradiction between the increasingly busy traffic management and the serious shortage of police force, and has the advantages of objective and reliable detection results. To a certain extent, it eliminates the "blind spots" of road traffic management in time and space, and has a deterrent effect on drivers' violations. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/017
CPCG08G1/0175
Inventor 石旭刚张水发刘嘉欧阳忠清汤泽胜李冲
Owner OB TELECOM ELECTRONICS