Image color compensating apparatus and methods thereof
AssigneePrinceton Technology Corporation
InventorsChun-Ming Cheng, Tsung-Hsiang Huang
Life of this patent
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Abstract
The invention relates to an image color compensating apparatus and related method thereof. A color space conversion operation is implemented in a pixel of a source image to convert first image signals corresponding to the pixel to second image signals corresponding to a color space plane. The color space plane comprises a color compensation region. Mathematical operations are implemented in the second image signals to determine where the pixel is located. When the pixel resides in the color compensation region, a compensation operation is implemented in the second image signals. Thus, the pixel approaches a predetermined direction for adjusting the color of the pixel.
Claims16
An image color compensation method, comprising:
- performing a color space conversion operation, by a way of a color space conversion unit, on a pixel of a source image to convert a plurality of first image signals of the pixel to a plurality of second image signals corresponding to a color space plane, wherein the color space plane comprises a color compensation region;
- performing a plurality of mathematical and logical operations, by way of an image color compensation unit coupled to the color space conversion unit, on the second image signals to determine a location of the pixel in the color space plane;
- performing a compensation operation, by way of the image color compensation unit, on the second image signals to make the pixel approach a predetermined direction in the color space plane so as to adjust the color of the pixel when the pixel resides in the color compensation region;
- wherein the image color compensation unit determines whether the pixel residing in the color compensation region is over compensated, and adjusts a pixel value of the pixel when the pixel is over compensated and obtains a final image, otherwise, the image color compensation unit outputs the pixel directly to generate the final image.
An image color compensation apparatus, comprising:
- a color space conversion unit, performing a color space conversion operation on a pixel of a source image to convert a plurality of first image signals of the pixel to a plurality of second image signals corresponding to a color space plane, wherein the color space plane comprises a color compensation region;
- an image color compensation unit coupled to the color space conversion unit, the image color compensation unit performing a plurality of mathematical and logical operations on the second image signals to determine a location of the pixel in the color space plane, and performing a compensation operation on the second image signals to make the pixel approach a predetermined direction in the color space plane so as to adjust the color of the pixel when the pixel resides in the color compensation region;
- wherein the image color compensation unit determines whether the pixel residing in the color compensation region is over compensated, and adjusts a pixel value of the pixel when the pixel is over compensated and obtains a final image, otherwise, the image color compensation unit outputs the pixel directly to generate the final image.
Dependencies are inferred from the claim text.