中文摘要：

利用改进的模糊积分准则提前对宏块的类型进行判定,实现Intra_4×4和Intra_16×16模式的快速选择,对于Intra_4×4模式,采用改进的平方梯度法估计块的纹理方向,从而排除可能性小的预测模式,提高帧内编码速度。试验表明该算法在基本保持编码性能的同时,可显著降低帧内预测的复杂度。

英文摘要：

The improved fuzzy integral metric is used to estimate the type of macroblock and select the best mode from Intra_4×4 and Intra_16×16.For the Intra_4×4,gradient squared method is adopted to estimate the texture direction and avoid the impossible mode,the speed of intra prediction is increased.Experimental results show that the proposed fast algorithm can achieve remarkable computational reduction while maintaining similar PSNR and bit rate performance.