第 卷第 期
吉 林 大 学 学 报 工 学 版
VolNo
年 月
Journal of Jilin University Engineering and Technology Edition
July
收稿日期
基金项目国家自然科学基金项目吉林省科技发展计划 国际合作项目 华为
深圳高校合作项目YBIN
作者简介许鑫 男博士研究生研究方向网络安全和网络管理E mailxuxinmailsjlueducn
通信作者刘衍珩 男教授博士生导师研究方向网络安全移动 IP 和网络服务质量
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无 参 考 视 频 传 输 质 量 评 价 模 型
许鑫
刘衍珩
王爱民
孙丹丹
吉林大学 计算机科学与技术学院长春 吉林大学 符号计算与知识工程教育部重点实验室
长春
摘要根据受众对光源的各类察觉特征将物理刺激量全域分为多个部分并依据人眼视觉
暂留效果分别映射到感知心理量的区段以此修正了 WeberFechner 对数法则 并在此基础
上提出一种宏块丢失比率与主观保真度的映射模型该模型以受众的视敏度为依据利用视星
原理计算在最佳观测位置处可察觉的最小失真程度和最小未失真区域不但体现了失真现象
在人眼中的暂留效果而且反应了损伤在时空中的传播 实现了对损伤全域的评测 模型计算
代价小且可部署在任意网络节点中可得到更贴近受众感受的视频质量
关键词计算机应用WeberFechner 对数法则绝对损伤阈差别损伤阈视频瞬时质量
中图分类号TP文献标志码A文章编号
Nullreference video transport quality evaluation model
XU Xin
LIU Yanheng
WANG Aimin
SUN Dandan
College of Computer Sci ence an d Technology Jilin Univer sity Changchun Chin a Symbol Comp utation and
Knowledg e Engineering of Mi ni stry of Education Jilin Un iversity Changchun China
AbstractAccording to the various characteristics of light source that can be perceived by the audience the
whole domain of stimulation is divided into multiple partsEach part is mapped to the perception scales by
means of the effect of visual staying phenomenonThus in this paper the WeberFechners law is improved
firstThen a mapping model is proposed on the MOS and loss ratio of the macroblockThe model calculates
the minimum distortion and undamaged area of which audience awarded by standing at the best observation
position ahead of the monitorIt achieves an evaluation of the full field damage by not only reflecting the effect
of impairment which can visually stay in the eyes but also indicating the spatial extent and temporal
propagation of lossExperiments show that the proposed method can be deployed in any network nodes for its
low computational complexity and achieve better video quality in close touch with the audience
Key word s computer application WeberFechner s law absolute impairment threshold just noticeable
differenceJND video instantaneous quality