分级中快速层间帧内预测  

Fast inter-layer intra prediction algorithm for extension spatial scalability

作　　者：赵旦峰[1] 赵晓星[1] 杨大伟[1] 王博[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2011年第1期117-120,共4页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省自然科学基金资助项目(F200810)

摘　　要：针对空间可分级视频编码中编码复杂度高、计算量大的缺点,利用编码层间的模式相关性,提出一种快速层间帧内预测算法。本算法通过分析编码层之间的模式分布规律,由基本层信息指导增强层编码,减小增强层中备选模式数量,从而提高编码速度。实验结果表明,在PSNR和比特率微小变化的情况下,该方法使编码时间平均下降了34.48%,有效提高了编码效率。As the spatial scalable video coding has disadvantage of high encode complexity and computation, a fast inter-Layer intra prediction algorithm is proposed by making use of the mode correlation between coding layers to improve the encoding efficient. By analyze the mode distribution of encoding layers, this algorithm encode the enhancement-layer base on the mode information of base-layer to reduce the number of candidate mode. Experimental results show that the proposed algorithm saves 34.48% encoding time on average with negligible change of PSNR and bit - rate.

关 键 词：分级视频编码 层间帧内预测 快速模式决策 空间可分级 

分 类 号：TP919.81[自动化与计算机技术]