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YCbCr方式に基づいて、RGBを明度に変換します。明度の変換式は「Y = 0.29891 × R + 0.58661 × G+ 0.11448 × B」 で与えられます (参考: Wikipedia 「色空間 – YCbCr / YPbPr」)。

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最終更新: 2013-01-06 08:32:54