关键词: 多视点视频编码, 模式选择, 模式复杂度, 变尺寸块, 帧间预测

Abstract: In order to solve greatly computational complexity for the variable block mode decision in Multi-view Video Coding (MVC), a fast inter-mode decision algorithm based on mode complexity for multi-view video coding was proposed. First, the characteristics for each variable block size of the Joint MVC (JMVC) were analyzed in the proposed algorithm. Then, the mode complexity was presented to determine the mode characteristics of the current macroblock. Finally, macroblocks were divided into three different mode classes: for macroblocks with simple mode, only mode size of 16×16 was checked, and other mode sizes were skipped; for macroblocks with medium mode, mode size of 8×8 was skipped; for macroblocks with complex mode, all mode sizes were tested. As a result, the unnecessary mode decision process could be early terminated in the method and computational load can be greatly reduced. The experimental results have demonstrated that the proposed method is able to significantly reduce the computational load by 62.75%, while keeping almost the same coding efficiency, compared with the full mode decision in the reference software of MVC.

Key words: Multi-view Video Coding (MVC), mode decision, mode complexity, variable block size, inter-frame prediction