基于宏块内部特征的H.264快速预测模式决策算法

In the upcoming video coding standard H.264/AVC, motion estimation(ME) is allowed to use seven kinds of block sizes to improve the rate-distortion performance. This new feature has achieved significant coding gain compared to coding a macro-block(MB) using fixed block size. However, ME is computational intensive with complexity increasing linearly to the number of allowed block sizes. In this paper, A fast inter-prediction mode decision with block complexity information is proposed. The analysis results show that the speed improvement of our proposed algorithm over the primitive algorithm is about 17% to 24% times but with little quality degradation.