摘要
H.265/HEVC帧内编码采用率失真最优化穷举搜索大大提高了编码效率,但引入极高计算复杂度。为降低计算复杂度,对当前64×64单元与时空相邻编码单元之间的率失真统计特性进行研究,提出一种纹理代价与非纹理代价关系优化的提前判决算法。实验结果表明,该方法平均降低了48.74%的计算复杂度,同时相比于HM参考软件,只增加了0.49%的BDBR,仅损失了0.039dB的BD-PSNR。
The high efficiency video coding(H.265/HEVC)intra-frame coding use rate-distortion optimization and exhaustive search to greatly improve coding efficiency,which introduces extremely high computational complexity as well.To reduce the computational complexity,the statistical characteristics of rate-distortion between the current 64×64unit and the spatial-temporal adjacent coding units(CU)were studied,and an early decision algorithm was proposed that optimized the relationship between texture cost and non-texture cost.Experimental results show that the proposed method reduces the computational complexity by 48.74% on average.Compared with the HM reference software,it only increases the BDBR by 0.49%and only loses the BD-PSNR of 0.039dB.
作者
何书前
余绪杭
邓正杰
HE Shu-qian;YU Xu-hang;DENG Zheng-jie(School of Information Science and Technology,Hainan Normal University,Haikou 571158,China;Information Network and Data Center,Hainan Normal University,Haikou 571158,China)
出处
《计算机工程与设计》
北大核心
2022年第9期2601-2608,共8页
Computer Engineering and Design
基金
海南省重点研发计划基金项目(ZDYF2019010)
国家自然科学基金项目(61562023)
赛尔网络下一代互联网技术创新基金项目(NGII201804002)
海口市重大科技创新基金项目(2020-006)。
