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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 whiteness ： ウィキペディア英語版 whiteness In colorimetry, whiteness is the degree to which a surface is white. An example of its use might be to quantitatively compare two pieces of paper which appear white viewed individually, but not when juxtaposed. The International Commission on Illumination describes it in the following terms: ==Calculation== $W\_2=Y\_2+800(x\_-x\_2)+1700(y\_-y\_2)$ $W\_=Y\_+800(x\_-x\_)+1700(y\_-y\_)$ $T\_=1000(x\_-x\_2)-650(y\_-y\_2)$ $T\_=900(x\_-x\_)-650(y\_-y\_)$ where * Y is the Y tristimulus value (relative luminance), * (x,y) is the chromaticity coordinate in the CIE 1931 color space * (xn,yn) is the chromaticity coordinate of the perfect diffuser (reference white) The numbers in the subscript indicate the observer: two for the CIE 1931 standard observer and ten for the CIE 1964 standard observer. 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「whiteness」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.