Efficient Coding Technique for Intra Prediction Modes Using The Statistical Distribution of Intra Modes of Adjacent Intra Blocks

주변 인트라블록 예측 모드의 통계적 분포를 이용한 효율적인 인트라 $4{\times}4$ 예측 모드 부호화 방법

The intra prediction technique is the one of the key factors to the success of H.264. There are nine optional prediction modes for each $4{\times}4$ luma block and 4 modes for each $16{\times}16$ luma block. To reduce the intra mode bits efficiently, the most probable mode (MPM) is estimated by using the intra modes of the adjacent blocks, since intra modes for neighboring $4{\times}4$ luma blocks are correlated. In this paper, a new method for estimating the MPM is proposed by using the statistical distribution of intra modes of adjacent intra blocks. Experimental results show that the proposed method can achieve a coding gain of about 0.1dB.