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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク CIE 1960 color space ： ウィキペディア英語版 CIE 1960 color space The CIE 1960 color space ("CIE 1960 UCS", variously expanded ''Uniform Color Space'', ''Uniform Color Scale'', ''Uniform Chromaticity Scale'', ''Uniform Chromaticity Space'') is another name for the chromaticity space devised by David MacAdam. The CIE 1960 UCS does not define a luminance or lightness component, but the ''Y'' tristimulus value of the XYZ color space or a lightness index similar to ''W'' * of the CIE 1964 color space are sometimes used. Today, the CIE 1960 UCS is mostly used to calculate correlated color temperature, where the isothermal lines are perpendicular to the Planckian locus. As a uniform chromaticity space, it has been superseded by the CIE 1976 UCS. ==Background== Judd determined that a more uniform color space could be found by a simple projective transformation of the CIEXYZ tristimulus values: (Note: What we have called "G" and "B" here are not the G and B of the CIE 1931 color space and in fact are "colors" that do not exist at all.) Judd was the first to employ this type of transformation, and many others were to follow. Converting this RGB space to chromaticities one finds〔 (recommended reading)〕 $u=\backslash frac$ $v=\backslash frac$ or equivalently (for comparative purposes with the equations to follow): $u=\backslash frac$ $v=\backslash frac$ MacAdam simplified Judd's UCS for computational purposes: $u\; =\; \backslash frac$ $v\; =\; \backslash frac$ The Colorimetry committee of the CIE considered MacAdam's proposal at its 14th Session in Brussels for use in situations where more perceptual uniformity was desired than the (x,y) chromaticity space, and officially adopted it as the standard UCS the next year. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CIE 1960 color space」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.