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A signal light image enhancement processing method

A processing method and image enhancement technology, which is applied in the field of image processing, can solve the problems of image quality impact, impact on pressure line recognition, failure to improve the number of saturated electrons, etc., and achieve the effect of solving color overexplosion and simple method

Active Publication Date: 2019-10-29
BEIJING ITARGE TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the increase in the bit width of RAW data improves the diversity of image colors and greatly improves the image quality, it also increases the difficulty of image processing and the resources required to achieve
[0005] More importantly, with the development of the intelligent transportation industry, the design of signal lights is becoming more and more high-end, which leads to the oversaturation of the RAW data output by the front sensor of the smart camera, and the increase of the bit width does not improve the saturation. The number of electrons, so the image will also appear to be over-exploded in some scenes, especially in the field of intelligent transportation. The quality of the image has a great impact, and more importantly, it affects the subsequent recognition of violations such as running a red light and pressing a line, so a better signal light correction algorithm is urgently needed to make up for it.

Method used

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  • A signal light image enhancement processing method
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  • A signal light image enhancement processing method

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Embodiment 1

[0036] A signal light image enhancement processing method, the specific flow chart is shown in figure 1 , the embodiment of the red signal light of this method takes the image of 1920*1080 as an example, first set the four coordinate points of the effective frame as (100, 200), (100, 230), (120, 200), (120, 230), the gain value is 5, and the box is selected as a red signal light, and the color components of each pixel are respectively recorded as (r, g, b);

[0037] (1) According to the scene of different periods of 24 hours, for the signal lights that need to be processed, first initialize the parameters, specifically the value of luma_threshold_low is 120, the value of luma_threshold_high is 180, the value of ydelta_threshold is 60, and the value of rgdelta_threshold is 50. The value of grdelta_threshold is 100, the value of luma_threshold2 is 100, the value of red_ratio is 1.4, the value of color_determine_radio is 5, and the value of color_compensate is 120;

[0038] (2) Ac...

Embodiment 2

[0054] A signal light image enhancement processing method, the method takes a green signal light as an example, adopts an image of 1600*1200, first sets the four coordinate points of the effective frame as (800, 1000), (800, 1080), (850, 1000), (850, 1080), the gain value is 3, and the green signal light is framed, and the color components of each pixel are respectively recorded as (r1, g1, b1);

[0055] (1) According to the scene of different periods of 24 hours, for the signal lights that need to be processed, first initialize the parameters, specifically the value of luma_threshold_low is 120, the value of luma_threshold_high is 180, the value of ydelta_threshold is 60, and the value of rgdelta_threshold is 50. The value of grdelta_threshold is 100, the value of luma_threshold2 is 100, the value of red_ratio is 1.4, the value of color_determine_radio is 5, and the value of color_compensate is 120;

[0056] (2) According to the line and field synchronization information of e...

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Abstract

The invention discloses a signal lamp image enhancement processing method. In the method, the RAW data of the original image is interpolated and converted to the RGB image domain, and then the R, G, and B components are analyzed and processed by algorithm, and corrected. Realize the reasonable restoration of the over-exploded area of ​​the signal light image, effectively solve the problem of over-exploded signal light color, and make the color of the signal light more in line with actual needs.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a signal lamp image enhancement processing method. Background technique [0002] With the development of technology, the performance of the front-end sensor is getting better and better, and the bit width of the RAW data supporting the back-end is getting wider and wider, providing a wider dynamic effect. The original meaning of RAW is "unprocessed". The RAW image can be understood as the original data that the CMOS or CCD image sensor converts the captured light source signal into a digital signal. RAW is an unprocessed and uncompressed format. RAW can be conceptualized as "raw image coding data" or more vividly called "digital negative". The full name of the RAW format is RAW Image Format, which is called the original in programming. Many photographers try their best to shoot photos in TIFF or RAW format to obtain the best possible image quality, and RAW format fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235
CPCH04N23/71H04N23/70
Inventor 杨云飞
Owner BEIJING ITARGE TECH CO LTD