适用于基本层的帧内快速编码算法

Fast intra prediction algorithm applied in base layer

根据最新编码的特征,提出了一种适合于基本层的帧内快速编码方法。首先对每个宏块中的8×8的子块进行DCT变换,根据纹理复杂度进行块模式的选择,针对各个块模式采用不同的快速方向模式选择算法。根据各个块模式和纹理复杂度,采用不同的零块预先判决算法和及时终止策略。实验证明,该算法能够在保持恢复图像质量几乎不降的同时,速度能提高到2倍多。

Based on the newest coding features,we propose a fast intra prediction algorithm which is very suitable for base layer coding.The DCT coefficients are calcalated for each 8×8 block in a marcoblock,and an appropriate coding block mode is selected according to texture complexity,and adaptively different fast direction mode selection algorithms are adopted for different block sizes.Then,based on each block's size and texture complexity,the proposed algorithm intelligently uses different all zero block detectio...