摘要： 为降低帧内预测的复杂度，提出一种快速的帧内预测算法。该算法根据量化系数Qp，缩小预测模式的选择范围。通过判断全0或近似全0残差块，引入提前终止方法。结合最优预测模式和次优模式的方向相邻性，进一步减小预测的计算量。实验结果表明，该算法能降低40%~96%的帧内预测计算量，同时保持视频的图像质量几乎不变。

关键词: 视频编码, 帧内预测, 快速算法, H.264/AVC标准

Abstract: To reduce computational complexity of intra prediction, an efficient fast mode selection is proposed. The algorithm decreases the selection range of prediction mode based on the analysis of quantification parameter Qp. By the judgment of all-zero blocks or near-all-zero blocks, prediction can be terminated earlier. The computational complexity can be further reduced by combining the directional adjacency of the optimal mode and the sub-optimal prediction mode. Experimental results show that the proposed algorithm can reduce computational complexity of the intra -prediction by 40%~96% while degradation of the image quality is negligible.

Key words: video coding, intra-prediction, fast algorithm, H.264/AVC

中图分类号: 

• TP391