Abstract
Motion estimation is computationally intensive in the H.264 video-coding standard.A novel variable block- size block-matching motion estimation algorithm using multiple hexagon search patterns is presented.According to the seven kinds of macroblock partitions,multiple hexagon search patterns,such as large hexagon patterns,horizontal flatted hexagon pattern,and vertical flatted hexagon pattern,are adopted respectively.Compared with traditional hexagon search algorithm,the new strategy provides not only better matching flexibility but also more sufficient overlapping of target searching block.Simulation result shows that the proposed algorithm has a prediction quality close to the full search (FS) and reduces the search points by about 10 % relatively to the hexagon search algorithm.
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