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Chroma regulating method

A technology of saturation and color system, applied in the field of saturation adjustment, can solve problems such as poor saturation effect, color deviation, and inability to highlight contrast

Active Publication Date: 2007-01-24
REALTEK SEMICON CORP
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Therefore, when adjusting the saturation of a digital color image pixel in a known manner, directly adjust the digital color image pixel C b 、C r As a result of the value, the color of the last overall pixel of the digital color image will be deviated
In addition, even when the saturation of digital color image pixels is adjusted by a known method, and the color deviation of the final overall pixel of the digital color image is not large, the saturation of each color pixel in the digital color image is the same. When it is adjusted, the color presented by the last overall pixel of the digital color image will also be adjusted for the saturation of each color pixel in the digital color image, and it is impossible to highlight the differences between the color pixels in the digital color image. contrast, so that the saturation effect of the final overall pixel color adjustment of this digital color image is not obvious

Method used

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Embodiment Construction

[0018] When adjusting the saturation of digital color images based on the known, in order to directly adjust the R, G, and B values ​​of all pixels in digital color images, they are color-converted to Y, C b 、C r C after value b 、C r Therefore, the saturation of each color pixel of the digital color image is adjusted at the same time, resulting in a deviation in the color of the last overall pixel of the digital color image, or the adjusted saturation of the last overall pixel color of the digital color image not effectively.

[0019] Therefore, the present invention considers only adjusting the saturation of a part of the digital color image or a single color pixel, so that the color of the digital color image is more vivid and the contrast is more distinct.

[0020] In order to have a further cognition and understanding of the features, purposes and functions of the present invention, the detailed description is as follows in conjunction with the accompanying drawings:

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Abstract

The chroma regulating method includes distinguishing several color systems and corresponding color system ranges from one CbCr coordinate system; and finding out the color system range of the digital color image corresponding to the color systems based on the chroma of the color system pixels in the digital color image so as to regulate the first chroma Cb and the second chroma Cr of the pixels in the corresponding color system range. The method regulates the chroma in the special color system without affecting the other color systems.

Description

technical field [0001] The present invention relates to a saturation adjustment method, in particular to a saturation adjustment method capable of adjusting a single color system. Background technique [0002] For general digital camera users, the quality of the digital color images captured by the digital cameras depends on whether the colors of the digital color images are bright or not. Therefore, the user usually only depends on whether the color of the digital color image is bright or not based on psychological factors for the digital color image captured by the digital camera. [0003] However, how to adjust the vividness, that is, the saturation, of digital color images has become a goal pursued by various digital camera manufacturers. In a known method, in order to convert the R, G, and B values ​​of the pixels in the digital color image into Y, C b 、C r Values ​​to adjust the brightness (Y) and chroma (C) of pixels in digital color images respectively b 、C r ) ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00
Inventor 丁鸣举
Owner REALTEK SEMICON CORP
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