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Method for correcting yellow cast of red lamp of electronic police

A correction method and electronic police technology, applied in the field of image processing, can solve the problems of low efficiency, unnaturalness, obvious traces of modification, etc., and achieve obvious effects.

Inactive Publication Date: 2015-04-29
南京金智视讯技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method is to draw red manually, but it is very unnatura

Method used

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  • Method for correcting yellow cast of red lamp of electronic police
  • Method for correcting yellow cast of red lamp of electronic police

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] like figure 1 As shown, the correction method for the yellowish red light of the electronic police is to correct the color cast of the video stream, which specifically includes the following steps:

[0087] (a1) For the actual electronic police intersection, set a red light ROI area;

[0088] (a2) process each frame image of the video stream, and convert all the pixels in the red light ROI area from the RGB color space to the HSV color space;

[0089] (a3) Red light area positioning in the red light ROI area: through time domain, frequency domain and space domain positioning, accurate red light pixel points are obtained;

[0090] (a4) Perform color cast correction on the red light ROI area: multiply the H value of the red light pixel by 0.3;

[0091] (a5) Transform the red light pixels in the red light ROI region from the HSV color space to the RGB color space.

Embodiment 2

[0093] like figure 2 As shown, the method for correcting the yellowish red light of the electronic police, and correcting the color cast of the illegal image, specifically includes the following steps:

[0094] (b1) For the illegal image captured by the electronic police, set the red light ROI area, because only the red light and green light are on in the illegal image, and the yellow light is not on, you can roughly set a rectangle including the entire signal light panel as the red light ROI area.

[0095] (b2) converting all pixels in the red light ROI region of the violation image from the RGB color space to the HSV color space;

[0096] (b3) Red light area positioning in the red light ROI area: through the comprehensive judgment and post-processing of the H, S and V values, accurate red light pixels are obtained;

[0097] (b4) Perform color cast correction on the red light ROI area: multiply the H value of the red light pixel by 0.3;

[0098] (b5) Transform the red ligh...

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Abstract

The invention discloses a method for correcting yellow cast of a red lamp of an electronic police. Accurate red lamp pixel points are obtained through arrangement of red lamp ROIs (regions of interest) and HSV (hue, saturation and value) color space conversion, and yellow cast of the red lamp is corrected through adjustment of H values. The method for correcting yellow cast of the red lamp of the electronic police is a complete solution, can be used for fields of video monitoring, intelligent traffic and the like. With the adoption of the tracking method, a user can well solve the problem of yellow cast of the red lamp of a traffic light shot by a camera.

Description

technical field [0001] The invention relates to a method for correcting yellowish red lights of electronic police, which belongs to image processing technology. Background technique [0002] Electronic police are used to capture illegal behaviors through cameras at traffic intersections. In addition, intelligent traffic and video surveillance also use traffic intersections as important monitoring locations. Due to the light sensitivity of the lens and camera, when the traffic signal light is brighter, the red signal light will turn yellowish, or even completely turn yellow, which is no different from the yellow signal light. For the violation records generated by electronic police products, the yellowish red light at this time will bring ambiguity in the evidence of fines, and even complaints from car owners. The existing method is to draw red manually, but it is very unnatural, the traces of modification are obvious, and the efficiency is low. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/90G06T2207/10024G06T2207/30236
Inventor 骞森
Owner 南京金智视讯技术有限公司
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