Adaptively de-blocking circuit and associated method
AssigneeMStar Semiconductors, Inc.
InventorsWei-Kuo Lee, Chien-Chih Chen, Shih-Chang Lai, Hsiang-Chun Lin
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Abstract
The present invention discloses an adaptively de-blocking circuit and associated method. A mean is derived according to the neighboring pixels surrounding a central pixel of an image. A blending factor is determined according to a flatness of the image. An updated pixel value of the central pixel is determined by blending the original pixel value of the central pixel and the mean according to the blending factor. Finally, alternatively output the updated pixel value and the original pixel value of the central pixel in response to a block border signal.
Claims18
An adaptively de-blocking method, comprising:
- calculating a mean for a pixel matrix;
- determining a factor according to said pixel matrix and said mean;
- and
- calculating, according to said factor, an updated pixel value of a central pixel of said pixel matrix.
An adaptively de-blocking method, comprising:
- calculating a mean of a plurality of neighboring pixels neighboring to a central pixel;
- determining a factor according to said neighboring pixels and said mean;
- and
- calculating, according to said factor, an updated pixel value of said central pixel.
An adaptively de-blocking circuit, comprising:
- a memory window including a central pixel and a plurality of neighboring pixels;
- a mean calculator, coupled to said memory window, for calculating a mean, according to said neighboring pixels;
- a factor generator, coupled to said memory window and said mean calculator, for determining a factor according to said neighboring pixels and said mean;
- and
- a pixel-updating circuit, coupled to said factor generator, for calculating an updated pixel value of said central pixel according to said factor.
Dependencies are inferred from the claim text.