基于运动特性的HEVC帧间模式快速决策算法-计算机工程与应用.PDF

Computer Engineering and Applications 计算机工程与应用 2018 ，54（23 ） 195 基于运动特性的HEVC 帧间模式快速决策算法 用 张亚军，李 强 应 ZHANG Yajun, LI Qiang 与 重庆邮电大学 通信与信息工程学院，重庆 400065 程 College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, g Chongqing 400065, China 工 r o . j ZHANG Yajun, LI Qiang. Fast inter mode decision algorithm for HEVC based on motion features. Computer Engi- 机 a neering and Applications, 2018, 54 （23 ）：195-202. e 算 c . Abstract ：The coding complexity in High Efficiency Video Coding （HEVC ）increases greatly owing to the adoption of 计 w quadtree structure, aiming at the problem, a fast algorithm for inter mode decision based on motion features is pro- posed. Firstly, for Coding Unit （CU ）at different motion areas, it utilizes depth correlation between the curren CU and the w adjacent CU in the spatio-temporal to reduce the current CU depth traversal range. Then, according to the similarity at w spatial partition of the PU mode, among the current CU, the adjacent CU in the spatio-temporal and the previous depth CU, it reduces Prediction Unit （PU ）mode traversal range for accelerating inter prediction process. The experimental results demonstrate that compared with HM 16.9, at different access ways, the proposed algorithm can reduce about 54% coding time on average and ensure the output bit rate is less increased. Key words ：high efficiency video coding; coding unit; prediction unit; motion feature; spatio-temporal correlation 摘 要：针对高性能视频编码采用四叉树结构大大增加了编