文章基本信息

标题：動き補正テレビ方式変換の改善
本地全文：下载
作者：川田亮一 ; 浜田高宏 ; 松本修一等
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：1577-1586
DOI：10.3169/itej.51.1577
出版社：The Institute of Image Information and Television Engineers
摘要：Recent years have seen the development of methods for motion-compensated television standards conversion (MC-TSC) in which motion information in the picture is utilized for conversion between TV standards that have different numbers of scanning lines and fields. Motion information used for standards conversion should contain true movement, which is not always a requirement in motion-compensated predictive coding. In conventional motion estimation methods for MC-TSC, however, the trueness has been insufficient, which has led to degradation of the converted picture. The authors therefore have improved the motion estimation scheme, utilizing a DOG (Difference of Gaussian) preprocessing filter for motion estimation, the iterative gradient method with improved high-precision, and the AOSF (Absolute Order Statistics Filter) for post-processing of motion vectors. A new high-quality motion-compensated television standards converter has been developed adopting the improved motion estimation scheme. This converter now makes it possible to greatly suppress degradation of the converted picture which has been difficult up until now.
关键词：テレビ方式変換;動き推定;フィールド内挿