计算机工程与应用2016，Vol.52Issue(6)：209-213,5.DOI:10.3778/j.issn.1002-8331.1404-0127
基于梯度和全零块检测的快速帧内模式选择算法
Fast intra mode decision algorithm based on gradient and all-zero block detection
摘要
Abstract
According to the market demand for mobile video services and the performance limited by the mobile terminal, a novel fast intra mode decision algorithm based on gradient and all-zero block detection is proposed. In order to reduce the calculation, it extracts the pixels according to the reduced power sampling. Then the texture gradient is calculated in the main prediction directions, thus excluding the prediction modes with larger gradients;and it simplifies the prediction modes for image boundary blocks and smooth texture blocks;finally, it carries out the 4×4 all-zero blocks detection, skips the candidate modes which can’t reduce the RDO cost further. Experimental results show that, the proposed algorithm can save about 51.69%of encoding time, while in keeping with the R-D performance.关键词
移动视频/H.264/AVC/模式选择/帧内预测/梯度检测/全零块Key words
mobile video/H.264/AVC/mode selection/intra prediction/gradient detection/all-zero block分类
信息技术与安全科学引用本文复制引用
金智鹏..基于梯度和全零块检测的快速帧内模式选择算法[J].计算机工程与应用,2016,52(6):209-213,5.基金项目
嘉兴市科技计划项目（No.2014AY11003）。 （）
