효율적인 블록 스킵 기술들을 이용한 H.264에서의 고속 모드 결정 알고리즘

초록

In this paper, we propose a fast algorithm that can reduce the complexity for inter mode decision of the H.264 encoder. The main idea consists of two techniques. The first one is the technique early terminating mode decision process. We focused on the skip and 16x16 mode because these modes occupies the largest portion in most of sequences. The second one is the technique skipping unnecessary 8x8 modes. The time consumption caused by the 8x8 mode is very considerable. Therefore if we can extract the unnecessary 8x8 mode calculation well, a large amount of time can be saved in total encoding process. The experimental results show that the proposed algorithm can achieve up to 43% speed up ratio with insignificant PSNR loss. The increase of total bits encoded is also not noticeable.

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