Abstract: H. 264 video coding standard introduces motion estimation with multiple block sizes to achieve a considerably higher coding efficiency than other video coding algorithms. This comes at the greatly increased computing complexity at the encoder. A method is proposed to eliminate some redundant coding modes that contribute very little coding gain based on analysis of macroblock detail-level and texture directions. The simulation results show that the algorithm can remarkably decrease the complexity at the encoder while keeping satisfying coding efficiency.

Key words: Video coding, H.264, Mode selection

摘要： 多模式运动估计使H.264比其他视频编码算法具有更高的编码效率，但同时也使计算复杂度明显提升。该文提出了一种新的适用于H.264的快速模式选择算法。此算法提前对块的细节程度和纹理方向进行分析，根据块细节程度缩小模式选择的范围，并根据块纹理方向对模式进行进一步筛选，从而大大提高了模式搜索速度，将性能损失控制在可以忽略的范围内。仿真实验的结果证明了本算法的有效性。

关键词: 视频编码, H.264, 模式选择

CLC Number: 

• TP391