文章基本信息

标题：MPEG-2映像符号化における画質の絵柄依存性の検討
本地全文：下载
作者：中須英輔 ; 青木勝典 ; 矢島亮一等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：1997
卷号：51
期号：9
页码：1568-1576
DOI：10.3169/itej.51.1568
出版社：The Institute of Image Information and Television Engineers
摘要：Since picture quality in digital coding depends heavily on such picture characteristics as spatial detail and motion, statistical analysis is required to estimate picture quality in digital broadcasting systems. This paper proposes a new definition of “criticality”, a quantitative measure of difficulty for MPEG-2 video coding, to analyze the picture quality of television programs statistically. Equipment is developed to measure criticality and the relationship between criticality values and assessment test scores is examined for test sequences. The results show that the definition of criticality provides sufficient accuracy to estimate picture quality for a large number of pictures statistically.
关键词：MPEG-2;画像符号化;ディジタル放送;画像;画質;圧縮