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In order to reduce the computational complexity of the intra prediction module in HEVC, this paper proposes an optimization method for intra prediction mode selection. First, the size of the prediction block PU in HEVC is obtained. For 4×4 size PU block, the prewitt operator is used to extract the texture direction. Then, we judge whether the texture direction is obvious or not. If it is obvious,...
High Efficiency Video Coding (HEVC), a successor to H.264, is the next generation video compression standard. To enhance the coding efficiency of video frames, 35 intra prediction modes adopted in Prediction Unit (PU) from 4×4 to 64×64 of HEVC. However, the improvement is based on the cost of rapid increased complexity performance loss. This paper proposed a Pixel Gradient Statistics (PGS) and Mode...
1This paper proposes a fast intra prediction mode decision strategy for HEVC (High Efficiency Video Coding), which aiming at reducing computation time and keeping the coding performance at the same time. Using a notation of a circle, we arrange the candidate modes into different groups. The order of processing MPM(most probable modes) and RMD(rough mode decision) is discussed, which helps a better...
A fast intra mode decision algorithm for H.264/AVC is proposed in this paper. The objective is to reduce the encoder complexity without significant rate-distortion performance degradation. Three methods are adopted: (1) the block size is selected between 4times4 block and 16times16 block based on the smoothness and correlation information. (2) A characteristic is also exploited, which is using to...
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