Intra Prediction Algorithm of H.264/AVC Based on Block Textural Feature
Chenguang Liu · Video Engineering · 2010
H.264/AVC provides several predicting modes and directions for intra prediction in the spatial region, and the optimal mode is selected by Rate Distortion Optimization(RDO) with high coding complexity. In order to solve this problem, a fast selective algorithm of intra prediction is proposed. The sum of the pixel difference in some direction is utilized to estimate the flatness and texture direction of a block. Then, with the results of this prediction, the block type and prediction mode are selected, in order to effectively reduce the computational complexity. Experimental results show that the proposed fast algorithm can achieve remarkable computation reduction while maintaining similar PSNR and bit rate performance.