映射矩阵似乎有 3 个主要变体,它们偏离小数点后第 3 位或第 4 位。哪个被认为是标准矩阵?
- Bruce Lindbloom http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
根据 (x, y) 计算红色、绿色、蓝色和 D65 参考白色 (X, Y, Z)
RGB -> XYZ
+0.4124564 +0.3575761 +0.1804375
+0.2126729 +0.7151522 +0.0721750
+0.0193339 +0.1191920 +0.9503041
XYZ -> RGB (by inverting RGB -> XYZ)
+3.2404542 -1.5371385 -0.4985314
-0.9692660 +1.8760108 +0.0415560
+0.0556434 -0.2040259 +1.0572252
- W3C https://www.w3.org/Graphics/Color/srgb
EasyRGB https://easyrgb.com/en/math.php似乎使用 W3C,但被截断
XYZ -> RGB
+3.2406255 -1.5372080 -0.4986286
-0.9689307 +1.8757561 +0.0415175
+0.0557101 -0.2040211 +1.0569959
XYZ -> RGB
+3.24096994 -1.53738318 -0.49861076
-0.96924364 +1.87596750 +0.04155506
+0.05563008 -0.20397696 +1.05697151