文章基本信息

标题：薄明視における視覚特性を考慮したトーンリプロダクション手法
本地全文：下载
作者：三鴨道弘 ; Marcos Slomp ; 玉木徹等
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：2010
卷号：64
期号：9
页码：1372-1378
DOI：10.3169/itej.64.1372
出版社：The Institute of Image Information and Television Engineers
摘要：Most tone reproduction operators focus on luminance compression, ignoring chromatic assets. The humanvisual system, however, alters color perception according to the overall level of luminosity. This paper proposes an extensionfor existing operators to simulate chromatic changes under mesopic vision. In such conditions, red responses tend to fadefaster than the remaining stimuli, producing a blue-shift phenomenon known as the Purkinje E ect. Starting with a highdynamic range image, the proposed method proceeds by separating luminance and chrominance components. Luminancecompression is performed by means of any already existing operator, though in this paper, for convenience, the photographicoperator was employed. Chromatic changes are handled in a decoupled fashion according to overall average luminance and byfollowing the observations of previous psychophysical experiments. Finally, compressed luminance and adjusted chrominanceare combined together, providing a displayable, low-dynamic range image. The technique has a low fingerprint thus beingsuitable for interactive rendering.
关键词：ハイダイナミックレンジ画像;トーンリプロダクション;薄明視;視覚特性;プルキニエ現象