A Fast Intra-mode Decision Scheme for HEVC

Compared with H.264/AVC, the newly published High Efficiency Video Coding (HEVC) standard improves the intra prediction by introducing much more prediction modes and novel techniques, which brings great computational burden. Although the rough mode decision (RMD) scheme in HEVC provides a way to speed up the process, it does not consider the similarity of neighboring modes to reduce the number of candidate modes. In this paper, we introduce a combined strategy for HEVC in intra prediction by utilizing parent PU candidate list, early termination of candidate list and mode group generation. Experimental results show that the proposed fast mode decision scheme significantly reduce the computation complexity with slight BD-rate increase, compared with the standard HM-9.0.