E'r = | R 255 |
, E'g = | G 255 |
, E'b = | B 255 |
R = 255E'r, G = 255E'g, B = 255E'b |
Er = E'r2.2, Eg = E'g2.2, Eb = E'b2.2 |
Er = E'r / 4.500 (E'r £ 0.081) or ((E'r + 0.099) / 1.099)(1.0 / 0.45) (E'r > 0.081) |
Eg = E'g / 4.500 (E'g £ 0.081) or ((E'g + 0.099) / 1.099)(1.0 / 0.45) (E'g > 0.081) |
Eb = E'b / 4.500 (E'b £ 0.081) or ((E'b + 0.099) / 1.099)(1.0 / 0.45) (E'b > 0.081) |
Er = E'r / 12.92 (E'r £ 0.04045) or ((E'r + 0.055) / 1.055)2.4 (E'r > 0.04045) |
Eg = E'g / 12.92 (E'g £ 0.04045) or ((E'g + 0.055) / 1.055)2.4 (E'g > 0.04045) |
Eb = E'b / 12.92 (E'b £ 0.04045) or ((E'b + 0.055) / 1.055)2.4 (E'b > 0.04045) |
E'r = Er(1.0 / 2.2), E'g = Eg(1.0 / 2.2), E'b = Eb(1.0 / 2.2) |
E'r = 4.500Er (Er £ 0.018) or 1.099Er0.45 - 0.099 (Er > 0.018) |
E'g = 4.500Eg (Eg £ 0.018) or 1.099Eg0.45 - 0.099 (Eg > 0.018) |
E'b = 4.500Eb (Eb £ 0.018) or 1.099Eb0.45 - 0.099 (Eb > 0.018) |
E'r = 12.92Er (Er £ 0.0031308) or 1.055Er(1.0 / 2.4) - 0.055 (Er > 0.0031308) |
E'g = 12.92Er (Eg £ 0.0031308) or 1.055Eg(1.0 / 2.4) - 0.055 (Eg > 0.0031308) |
E'b = 12.92Eb (Eb £ 0.0031308) or 1.055Eb(1.0 / 2.4) - 0.055 (Eb > 0.0031308) |
(Xr, Yr, Zr) = (xr / yr, 1, (1 - xr - yr) / yr) |
(Xg, Yg, Zg) = (xg / yg, 1, (1 - xg - yg) / yg) |
(Xb, Yb, Zb) = (xb / yb, 1, (1 - xb - yb) / yb) |
(Xw, Yw, Zw) = (xw / yw, 1, (1 - xw - yw) / yw) |
( Sr Sg Sb ) = ( Xw Yw Zw ) | æ ç ç è |
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- 1 |
( X Y Z ) = ( Er Eg Eb ) | æ ç ç è |
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601(NTSC)色域 = 赤(0.670, 0.330), 緑(0.210, 0.710), 青(0.140, 0.080), 白(0.3101, 0.3162)
709(sRGB)色域 = 赤(0.640, 0.330), 緑(0.300, 0.600), 青(0.150, 0.060), 白(0.3127, 0.3290)
リニア601RGB → XYZの変換行列
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XYZ → リニア601RGBの変換行列
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リニア709RGB → XYZの変換行列
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XYZ → リニア709RGBの変換行列
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xD = | - 4.6070 ´ 109 T3 |
+ | 2.9678 ´ 106 T2 |
+ | 0.09911 ´ 103 T |
+ 0.244063 (4000K £ Τ £ 7000K) |
xD = | - 2.0064 ´ 109 T3 |
+ | 1.9018 ´ 106 T2 |
+ | 0.24748 ´ 103 T |
+ 0.237040 (7000K < Τ £ 25000K) |
yD = - 3.000xD2 + 2.870xD - 0.275 |