通信学报2017，Vol.38Issue(6)：68-74,7.DOI:10.11959/j.issn.1000-436x.2017114
基于SATD的H.265/HEVC拉格朗日因子选择算法
Lagrange multiplier selection based on SATD for H.265/HEVC
摘要
Abstract
In order to improve the coding performance of intra rough mode decision, a SATD-based Lagrange multiplier selection algorithm was proposed for H.265/HEVC. The characteristic of Hadamard transform was first analyzed, and following the new Lagrange multiplier calculation approach based on the distortion measurement of SATD was con-structed according to the rate-distortion theory. Then combing the principle of discrete cosine transform, the related pa-rameters were obtained by the formula derivation. Experimental results show that the proposed method supports more accurately intra prediction mode decision, and the reconstruction video quality is improved in average while keeping the same bit-rate.关键词
帧内预测模式判决/拉格朗日因子/率失真优化/H.265/HEVCKey words
intra prediction mode decision/Lagrange multiplier/rate-distortion optimization/H.265/HEVC分类
信息技术与安全科学引用本文复制引用
李维,赵凡,张二虎,任鹏..基于SATD的H.265/HEVC拉格朗日因子选择算法[J].通信学报,2017,38(6):68-74,7.基金项目
中国博士后科学基金资助项目(No.2017M610644) （No.2017M610644）
国家自然科学基金资助项目(No.61671376,No.61671374)China Post Doctoral Science Foundation (No.2017M610644), The National Natural Science Foundation of China (No.61671376, No.61671374) （No.61671376,No.61671374）
