摘要
H.264标准中推荐的全搜索算法存在计算量大、耗时长的缺点,对此提出了一种基于部分模式进行预测的帧内空间域快速纹理逼近预测算法,并对该算法进行了分析和试验,证明该算法在模式选择上较FS可以提高3～6倍的速度,可有效地提高预测效率。
In H.264, intra-prediction for each block is used to compress I-frame. Although the full search algorithm can fully use the texture relativity to choose one of the 9 prediction modes for every 4×4 block, but meanwhile it is computationally expensive. In this paper, Fast Texture Approaching Algorithm (FTAA)based on partial computation is proposed, and its efficiency is proved through the experiments.
出处
《电视技术》
北大核心
2004年第9期11-14,共4页
Video Engineering
关键词
H.264
全搜索算法
帧内空间域预测
快速纹理逼近
绝对差值求和
绝对误差均值
Full Search (FS)
Fast Texture-approaching algorithm(FTAA)
Fast intra-prediction mode selection(FIPMS)
optimal mode
sum of absolute difference(SAD)
sum of absolute error(MAE)
