| 摘要 |
A video signal coding method and apparatus thereof and a video signal decoding apparatus of the present invention improves visual picture quality of a decoded image with higher compression rate than ever. A video signal (S1) is resolved into local luminance information composed of the smooth component, edge information composed of contour component, and texture information composed of component other than the smooth component and the contour component corresponding to each different visual importance. Then, the local luminance information is coded (S2) by a coding method which restores all of the local luminance information, the edge information is coded (S4) by a coding method by chain information and amplitude information, and the texture information is coded by a coding method having higher compression rate compared with the local luminance information (S2) and the edge information (S4). The coding can therefore be performed with higher compression rate than ever and in consideration of the visual picture quality of the restored image.
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