视频主观观测实验启发的HEVC感知帧内码率控制  

HEVC perceptual intra-frame rate control inspired by video subjective observation experiment

作　　者：公衍超 王玲 刘颖 杨楷芳 林庆帆 王富平 GONG Yanchao;WANG Ling;LIU Ying;YANG Kaifang;LIN Qingfan;WANG Fuping(School of Communications and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China;International Joint Research Center for Wireless Communication and Information Processing Technology,Xi’an 710121,China;School of Computer Science,Shaanxi Normal University,Xi’an 710119,China;Maschine Technology Pte.Ltd.,787820,Singapore)

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121 [2]无线通信与信息处理技术国际联合研究中心,陕西西安710121 [3]陕西师范大学计算机科学学院,陕西西安710119 [4]新加坡Maschine Technology有限公司,新加坡787820

出　　处：《通信学报》2021年第8期90-102,共13页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61801381,No.61801282);陕西省自然科学基础研究基金资助项目(No.2020JQ-426);陕西省国际科技合作与交流计划基金资助项目(No.2018KW-003);陕西省教育厅科研计划基金资助项目(No.18JK0708);西安邮电大学研究生联合培养工作站重点基金资助项目(No.YJGJ201902)。

摘　　要：针对高效视频编码(HEVC)采用的码率控制方法感知率失真性能较低的问题,提出了一种有效提高视频感知率失真性能的帧内码率控制算法。首先,度量视频的空时域复杂度,并结合空时域复杂度设计视频主观观测实验。其次,基于视频主观观测实验结果,结合人类视觉系统相关感知特性,构建能够有效衡量人眼对视频不同区域感知差异性的视频内容空时域感知敏感因子。最后,将空时域感知敏感因子运用到帧内图像最大编码单元层目标比特分配中,实现感知帧内码率控制。实验结果表明,在比特估计准确度和感知率失真性能2个核心指标上,所提算法均明显优于HEVC采用的码率控制算法。In view of the low perceptual rate-distortion performance of the rate control method used in high efficiency video coding(HEVC),an intra-frame rate control algorithm to effectively improve the perceptual rate-distortion perfor-mance of video was proposed.First,the spatiotemporal complexity of videos was measured,and the video subjective ob-servation experiment was designed combined with the spatiotemporal complexity.Secondly,based on the experimental results of video subjective observation,combined with the relevant human vision system perception characteristics,the spatiotemporal perceptual sensitivity factors of video content which could effectively measure the perception difference of human eyes for different regions of video were constructed.Finally,the spatiotemporal perceptual sensitivity factors were applied to the target bit allocation of the largest coding unit layer in the intra-frame image,then the perceptual in-tra-frame rate control was realized.Experimental results show that the proposed algorithm is superior to the rate control algorithm adopted by HEVC in terms of the bit estimation accuracy and the perceptual rate-distortion performance.

关 键 词：高效视频编码 码率控制 人类视觉感知 目标比特分配 

分 类 号：TN911.7[电子电信—通信与信息系统]