Automatic white balance method for processing image color cast

Abstract

The invention discloses an automatic white balance method for processing image color cast, comprising the steps of converting an image into a target image of a YCbCr format; dividing the target image; calculating pixel components Cb and Cr and means Mb and Mr of each area; calculating intermediate variables Db and Dr; when Db is smaller than Mb / 10 and Dr is smaller than Mr / 10, removing the means of the pixel components of an area corresponding to the above area, and calculating white reference points with the means of the pixel components of the remaining areas; calculating white standard reference points in the target image; calculating arithmetic means Ya, Cba and Cra of the white standard reference points to obtain means of three primary color components of the target image; acquiring adjustment parameters of the three primary color components; and adjusting white balance values of the three primary color components according to the adjustment parameters. The method can overcome the defect that the original input image has abnormal colors due to different ambient light, and is fast, simple and cost-saving.

Description

technical field [0001] The invention relates to the field of image and video processing, in particular to an automatic white balance method for processing image color cast. Background technique [0002] With the explosive development of the mobile Internet, makers and followers of bad videos are also using more means and methods to spread negative energy, chase high profits and poison young people. So far, there are many basic research results on detecting bad videos, but many difficulties have been encountered in practical applications. At present, the most basic technology for bad video detection is based on human skin color detection, because bad behaviors generally start from "naked", and the scientific basis for skin color detection is the "color constancy principle", that is, the Retinex principle, which refers to Under lighting conditions, the color light quantity index of the physical state follows certain rules, especially the human skin dominated by heme, generall...

AI Technical Summary

Problems solved by technology

But in many cases, if the color of the image is relatively single, the grayscale method will not only fail to improve the image quality, but will cause serious distortion.

[0006] At present, the effect of image color cast processing is not ideal, and there is distortion in image restoration, which affects the accuracy of later image processing and judgment, and the processing method is more complicated and time-consuming

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