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This paper proposed a novel approach to segment objects from the H.264 compressed video with moving background. At first, the noisy motion vectors are eliminated from the motion field by vector median filtering. Then the predicted motion field reconstructed by backward estimation is used to accumulate the motion field, which is followed by global motion compensation. After that, the hypothesis testing...
H.264 employs 7 different size block types for motion estimation that can significantly improve the coding performance compared with the previous video coding standards. However, H.264 requires extremely high computation with the R-D optimized decision since so many prediction modes are used. In this paper, a novel inter mode decision algorithm (NIMDA) is proposed that utilizes SADs of each 4X4 block...
Since the current rate control schemes in H.264 do not present the capability of efficient GOP-level bit allocation, the video quality varies greatly for sequences with the scene change or the scene complexity varying from one GOP to another. To overcome the limitation, we propose a novel rate control scheme based on incremental PID algorithm. The incremental PID algorithm is introduced to minimize...
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