一种基于MPM的帧内预测模式快速选择算法在HEVC中的应用

High Efficiency Video Coding (HEVC) has become the latest video compression standard, which can provide significantly improved compression performance as compared to all existing video coding standards. In the intra prediction of HEVC, this is achieved by providing up to 35 intra modes with kinds of coding unit sizes. The optimal intra mode is selected through a rough mode decision (RMD) process and a rate-distortion optimization (RDO) process. It is very timeconsuming that every coding unit with different sizes is traversed in both procedures, thus a MPM based fast mode decision algorithm is proposed in this paper to reduce the computational complexity of the intra prediction of HEVC. As compared to the default encoding scheme in HEVC test model HM9.0, experimental results show that the fast intra mode decision scheme provides almost 20% time saving on average with negligible loss of coding efficiency in all intra low complexity cases.