Display device color brightness compensation method, compensation device and compensation system

Abstract

The display device color brightness compensation method, compensation device and compensation system intercept the effective area from the captured full-color test chart image, correct the dead pixels in the effective area, and adjust the resolution of the corrected effective area to match the The consistency of the display device, the reference point is determined according to the pixel value of each pixel in the adjusted effective area, the compensation coefficient of each pixel is calculated according to the reference point and the pixel value of each pixel, and each pixel of the input signal is adjusted according to the compensation coefficient The pixel value of the point is corrected. Since the pixel values ​​of each pixel of the full-color test chart image in an ideal state are consistent, the compensation coefficient obtained according to the pan-color test chart image is closer to the actual situation, and the correction can be made according to the compensation coefficient thus obtained. It can effectively improve the problem of uneven color and brightness of the display device, and can effectively eliminate the dark edges and dark corners of the display device, especially in the field of splicing display, which can greatly improve the display effect, and the brightness loss is small.

Description

Technical field [0001] The present invention relates to the field of image processing technology, and in particular to a compensation method, compensation device and compensation system for compensating the color brightness of a display device. Background technique [0002] In the current technical field of large-size screen display, the technical methods used mainly include projection technology and flat-panel display technology. Among them, in the projection display technology, due to the unevenness of the illumination spot and the optical path, the The displayed image has the problem of uneven color brightness. In flat panel display technology, the uneven distribution of the background light source will also cause the displayed image to have uneven color brightness. If it is only a single display, This kind of unevenness is not easy to be observed by the naked eye, and if it is applied to the splicing display, it will become very obvious, and there will be a very obvious probl...

AI Technical Summary

Problems solved by technology

[0003] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a display device color brightness compensation method, compensation device and compensation system, which can effectively improve the problem of uneven color brightness of the display device, and brightness loss Small

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