Fast algorithm of intra prediction for H.264 based on direction measure
Cheng Hao · Computer Engineering and Applications Journal · 2010
H.264 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 algorithm of intra prediction for H.264 based on direction measure is proposed.The algorithm utilizes direction measure to estimate the flatness and texture direction of a block,and precludes some less probable prediction modes to avoid unnecessary cost computations.Ex-perimental results show that the proposed algorithm can averagely reduce encoding time by 60% with 0.05 dB PSNR loss and 1.27% bit rate increase on average.