Television color adjustment method and device

Abstract

The invention discloses a television color adjustment method and device. The adjustment method comprises the steps that the luminance value of a current image in a television screen is acquired; according to the luminance value of the current image, the target parameter of a color in the current image is calculated; and according to the color target parameter, the actual parameter of the color is adjusted. The adjustment device comprises an image luminance value acquisition module, a color target parameter calculation module and a color parameter adjustment module, wherein the steps are carried out by the modules. According to the television color adjustment method and device, for different image luminance scenes, the color adjustment is adjusted and corrected; the color parameter adjustment of each color in any luminance is realized; the accuracy of color correction is improved; and a desired color reproduction effect is realized.

Description

technical field [0001] The embodiments of the present invention relate to a method and device for adjusting TV color. Background technique [0002] In the process of evaluating the quality of TV picture quality, whether the color is accurate, vivid and bright is a very important evaluation index. In practical applications, a large part of the TV image quality adjustment process is color adjustment and correction. Therefore, whether the color can be reproduced truly and accurately through color adjustment and correction is the core of TV image quality processing. [0003] At present, traditional TV color processing generally converts the YCbCr color space into the YSH color space ("brightness-saturation-hue" color space) through a color conversion matrix for image quality processing. Specifically, the hue of the YSH color space can be divided into R, G, B, C, M, Y (R: Red, red phase; G: Green, green phase; B: Blue, blue phase; C: Cyan, Blue-green phase; M: Magenta, magenta...

AI Technical Summary

Problems solved by technology

[0004] However, this color adjustment method has the following defects: in different image brightness scenarios, for the same hue, only one set of parameters of the hue can be adjusted, that is, only one set of brightness and hue of the hue can be adjusted. and saturation values, but the color parameters cannot be adjusted and corrected separately for different image brightness scenes, and it is difficult to achieve the ideal color reproduction effect

For example, for two kinds of images, the bright scene and the dark scene, the saturation and hue cannot be balanced, which may easily cause problems such as high color saturation or low hue in the dark scene.

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