摘要： 针对AVS-M运动搜索算法的复杂性，根据其变换量化的特点，推导全零块判决准则，提出一种基于全零块检测的AVS-M运动搜索快速算法，在运动搜索的同时判决出全零块，从而节省运动搜索和变换量化的时间。实验数据显示，该算法节省的计算量最多可达77.4%，且比特率下降程度大于峰值信噪比下降程度。结果表明，在不降低编码性能的情况下，该算法能有效提高运动估计的编码速度。

关键词: 整数变换, 全零块检测, 帧间预测, 运动搜索

Abstract: In accordance with the complexity of AVS-M motion search algorithm, according to the characteristics of its converting quantification, all-zero block judgment criterion is deduced and an AVS-M fast motion search algorithm based on all-zero block detection is proposed. The algorithm judges all-zero block when moving and searching, which saves a lot of time on moving search and converting quantification. Experimental results show that the computational capacity saved by the algorithm can amount to 77.4% at most, and the dropped level of Bits is larger than PSNR. The encoding speed of motion estimation can be effectively increased without the lower encoding performance.

Key words: integer converting, all-zero block detectionZ, inter prediction, moving search

中图分类号: 

• TN919.81