文章基本信息

标题：大型LCD-TV用倍速フレームレート変換技術とその画質改善効果の検証
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作者：吉田育弘 ; 藤根俊之 ; 山本健一郎等
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：2008
卷号：62
期号：5
页码：778-787
DOI：10.3169/itej.62.778
出版社：The Institute of Image Information and Television Engineers
摘要：This paper discusses a frame rate conversion (FRC) technology that improves LCD picture quality (PQ) by doubling the frame rate to 120 Hz; an observer study on the resulting quality is also reported. To achieve a high-performance LCD-TV system, we first re-consider fundamental design issues, such as characteristics of the human visual system, motion content in real broadcast video, and current viewing conditions related to screen size. We then discuss how FRC is effective in improving the PQ of large-screen LCD-TVs; we show that onscreen captions can be particularly improved. Next, we discuss an FRC technology using a novel approach that improves the PQ of onscreen captions; it also reduces motion vector estimation problems. A subjective study using paired comparisons of two LC-TVs with this FRC technology showed that at motion speeds below 21 deg/sec (80% of the onscreen captions), the PQ could be increased to above that of an acceptance limit of 3.5.
关键词：LCD-TV;ホールドボヤケ;フレームレート変換;画質の主観評価