Abstract
In this paper, a segmentation-based coding technique as applied to video sequences is proposed. A proposed method separates an image into contour and texture parts and then the visually sensitive contour part is represented by package contour codes and the visually insensitive texture part is reconstructed by a representative motion vector of a region and mean of the segmented displaced frame difference (DFD). It uses a change detector to find moving areas and adopts variable blocks to represent correctly different motions. For better quality of reconstructed images, the DFD between the original image and the motion-compensated image reconstructed by the representative motion vector is segmented. Computer simulation with several video sequences shows that the proposed method gives better performance than the conventional methods in terms of the compression ratio and peak signal-to-noise ratio.
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