H.264中快速模式间决策候选项的有效选择

2008 Second International Conference on Future Generation Communication and Networking Symposia Pub Date : 2008-12-13 DOI:10.1109/FGCNS.2008.43

Woo-seok Jang, Jin Heo, Yo-Sung Ho

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引用次数: 1

摘要

在H.264/AVC视频编解码器中，采用率失真优化方法进行模式决策，提高了编码效率。但是由于复杂度高，编码时间大大增加。在本文中，我们提出了一种快速的模式间决策算法，在运动估计过程中使用运动代价来减少候选模式的数量。提出的方法进行早期16 × 16模态决策和早期非活动P8 × 8模态决策。其编码性能与H.264/AVC JM参考软件中的快速模式间决策相似;但其编码时间平均缩短了30.95%。特别是当量化参数(QP)较大时，得到了较好的结果。

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Efficient Selection of Candidates for Fast Inter Mode Decision in H.264

In the H.264/AVC video codec, a rate-distortion optimization method for mode decision provides high coding efficiency. However, it increases encoding time significantly due to its high complexity. In this paper, we propose a fast algorithm for inter mode decision using motion cost during motion estimation to reduce the number of candidate modes. The proposed approach makes early 16 times 16 mode decision and early inactive P8 times 8 mode decision. Its encoding performance is similar to that of the fast inter mode decision in the H.264/AVC JM reference software; however, its encoding time is reduced by 30.95% on average. Especially, when quantization parameter (QP) is larger, we obtained better results.

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2008 Second International Conference on Future Generation Communication and Networking Symposia

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