Color correction method

Abstract

The invention discloses a color correction method, which comprises the following steps of: S1, obtaining the red component value, the green component value, the blue component value, the red gain value and the blue gain value of an image under a certain light source environment; S2, judging whether the red gain value and the blue gain value satisfy the condition that the red gain value is less than or equal to a first preset value and the blue gain value is more than or equal to a second preset value; if not, skipping to S4; S3, judging the light source environment as a first light source, setting a color correction matrix as a first color correction matrix, and skipping to S5; S4, judging the light source environment as a second light source, and setting the color correction matrix as a second color correction matrix; and S5, correcting the red component value, the green component value and the blue component value by the first color correction matrix or the second color correction matrix. With the color correction method, an image is corrected by setting different color correction matrixes according to different light source types so as to solve the technical problem that the traditional color correction method adopts the correction matrix with the single color.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a color correction method. Background technique [0002] Image restoration is an important part of image processing, and its main purpose is to improve image quality. When a degraded or noise-polluted image is given, it is the main process of image restoration to reconstruct a new image or restore the original image by using some prior knowledge of the degradation phenomenon. [0003] In the prior art, due to the influence of the color filter characteristics in the CMOS (Complementary Metal Oxide Semiconductor) sensing device, the color of the image captured by the CMOS sensing device is often not pure enough, that is, from the CMOS sensor The color of the output image has a color cast, which requires a certain method to correct it, so that the image shows a pure color. [0004] The commonly used calibration method is as follows, take a picture of a color checker (color checker)...

AI Technical Summary

Problems solved by technology

[0008] The existing color correction method cannot satisfy the correction of images taken under all color temperature environments at the sam

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