发明名称 |
Image coding method and apparatus using spatial predictive coding of chrominance and image decoding method and apparatus |
摘要 |
A method and apparatus for coding a chrominance component of an intra-image using spatial predictive coding and a method and apparatus for decoding the coded chrominance component are provided. The coding apparatus includes a variation calculator, which calculates a vertical variation and a horizontal variation with respect to a current block to be predictively coded among blocks having a predetermined size, into which a chrominance component of an input image is divided, using pixel values in an upper reference block adjacent to the current block and pixel values in a side reference block adjacent to the current block; a hybrid predictor, which divides the current block into a predetermined number of regions according to the vertical and horizontal variations and generates a prediction value of each pixel in each region using a pixel value in the upper reference block or a pixel value in the side reference block; a differential value generator, which generates a differential value between the prediction value and a corresponding real pixel value in the current block and codes the differential value using a predetermined coding method.
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申请公布号 |
US2008025406(A1) |
申请公布日期 |
2008.01.31 |
申请号 |
US20070882869 |
申请日期 |
2007.08.06 |
申请人 |
SAMSUNG ELECTRONICS CO.,LTD. |
发明人 |
KIM WOO-SHIK;KIM CHANG-YEONG;SEO YANG-SEOCK |
分类号 |
H04N11/04;G06T9/00;H04N7/26;H04N7/32;H04N7/34;H04N7/50 |
主分类号 |
H04N11/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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