H.264中帧内预测算法的快速实现

Fast Implementation of Intra Prediction in H.264

通过结合图像边缘方向信息4×4亮度块和16×16亮度块之间选择的2个特点,对H.264的帧内预测算法进行了相应的改进.结果表明,本文算法和H.264校验模型JM86相比,图像编码质量和输出码率基本保持不变,但编码时间却明显少于校验模型JM86.

The intra prediction of H.264 is improved by combining the information of image edge direction and selection between intra 4×264; intra prediction; rate distortion optimization 4 block mode and intra 16 ×264; intra prediction; rate distortion optimization 16 block mode. Experiment results suggest that the proposed scheme is more time-saving than H.264 encoder JM86 while the quality of coded image and bit rate are not compromised