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Automatic color adjusting process and apparatus

A color, automatic technology, applied in the direction of color signal processing circuit, luminance and chrominance signal processing circuit, etc., can solve the problem of the picture biased to a single color system, the adjustment method is monotonous and inconsistent, and achieve the adjustment of the chrominance signal. cut effect

Active Publication Date: 2009-02-18
MEDIATEK INC
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Problems solved by technology

[0006] Although this existing method can automatically adjust the chroma signal in the area with insufficient chroma, when the chroma signal in this area is adjusted to approach the value of the chroma signal at the center point of this area, the color of the chroma signal in this area will be Although the picture will be adjusted to become brighter, but the existing adjustment method is too monotonous and it is easy to make the picture presented after adjustment tend to be a single color system, resulting in the picture presented in the adjusted area and the picture in the adjacent area having different chromaticity. abrupt, uncoordinated situation arises

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  • Automatic color adjusting process and apparatus
  • Automatic color adjusting process and apparatus

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Embodiment Construction

[0044] Please refer to figure 1 , is a flow chart of the automatic color calibration method in a preferred embodiment of the present invention. First, in step 101, an operation window and a target window are established on a plane coordinate with the chroma signals Cb and Cr as two coordinate axes. Wherein the target window is within the operation window.

[0045] Next, in step 102, image data of an image point is input. And, in step 103, it is judged whether the position of the chroma signal value of the image point on the plane coordinate falls between the operation window and the target window. If the chroma signal value of the image point falls between the operation window and the target window, step 104, adjust the chroma signal value of the image point according to the target window. If the image point does not fall between the operation window and the target window, step 105, the chroma signal value of the image point is not adjusted. The adjusted formula is as foll...

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Abstract

This invention relates to automatic color adjusting method, which comprises the following steps: a, establishing operation window and aim window on the plane coordinate of first and second color signal, wherein, the aim window is in the operation window; inputting image point data to judge whether the first and second color signal values of the image point drop in between the operation window and aim window; if the image point drops in between the operation window and aim window, then adjusting first and second color signal values according to aim window.

Description

technical field [0001] The present invention relates to an automatic color adjustment method and device, in particular to an automatic color adjustment method and device using an operation window and a target window. Background technique [0002] With the advent of the digital age, it can be found that digital information products have gradually replaced similar traditional products. The most obvious example is that the current digital cameras have gradually replaced the use of most traditional cameras, so the circulation of image information has also changed from traditional similar images ( Photos) are gradually replaced by digital images that can be stored, copied, and transmitted digitally. Therefore, the quality of digital images has been paid more and more attention. [0003] At present, the unit of a digital image is a pixel, and the color of each pixel is composed of three primary colors (R, G, B), and each pixel color has its brightness and chroma. The quality of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N9/68H04N9/77
Inventor 杨恭存李维国申云洪
Owner MEDIATEK INC
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