Local color restoration method and system based on color space

Abstract

The invention provides a local color restoration method and system based on a color space, and the method comprises the steps: obtaining an original image of a to-be-restored color, reading a color cast region in the original image, and calculating the average value of pixels in the color cast region; taking a pixel average point in the color cast area as a center, expanding outwards for a presetdistance in the color space to obtain a three-dimensional debugging area, and enabling the three-dimensional debugging area to cover the color cast area; obtaining a three-dimensional target area, wherein the three-dimensional target area and the three-dimensional debugging area are equal in size and content, and the color of the three-dimensional target area is the real color of the content in the three-dimensional debugging area; and establishing a mapping relationship, and mapping the color of the three-dimensional debugging area into the color of the three-dimensional target area in the color space. According to the invention, the problem of local color cast in the image is solved.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a local color restoration method and system based on color space. Background technique [0002] With the rapid development of photographing technology, people have higher and higher requirements for image color, not only require accurate color reproduction, but also hope that the captured pictures can be pleasing to the eye, and the captured pictures are more in line with modern aesthetics, such as For the landscape painting, I hope the color of the trees is more colorful, and for the skin color, I hope it has a little yellow-green color instead of red-yellow. However, due to the limitations of the inherent hardware conditions of the CMOS image sensor and the defects of the ISP's own algorithm, the captured pictures are prone to inaccurate color reproduction in some complex and special environments, or the captured pictures cannot meet the customer's style. preferences....

AI Technical Summary

Problems solved by technology

However, due to the limitations of the inherent hardware conditions of the CMOS image sensor and the defects of the ISP's own algorithm, the captured pictures are prone to inaccurate color reproduction in some complex and special environments, or the captured pictures cannot meet the customer's style. like

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