Created
February 13, 2015 09:38
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Colour - Computing Adapted Colourspace Primaries
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| import numpy as np | |
| import colour | |
| P_R = np.array([0.64, 0.33]) | |
| P_G = np.array([0.30, 0.60]) | |
| P_B = np.array([0.15, 0.06]) | |
| D65 = colour.xy_to_XYZ(colour.ILLUMINANTS['cie_2_1931']['D65']) | |
| D50 = colour.xy_to_XYZ(colour.ILLUMINANTS['cie_2_1931']['D50']) | |
| CAT = 'Bradford' | |
| XYZ_R = colour.xy_to_XYZ(P_R) | |
| XYZ_G = colour.xy_to_XYZ(P_G) | |
| XYZ_B = colour.xy_to_XYZ(P_B) | |
| M = np.vstack([XYZ_R, XYZ_G, XYZ_B]) | |
| Y = np.dot(np.transpose(np.linalg.inv(M)), D65) | |
| XYZ_Rn = colour.xyY_to_XYZ(np.append(P_R, Y[0])) | |
| XYZ_Gn = colour.xyY_to_XYZ(np.append(P_G, Y[1])) | |
| XYZ_Bn = colour.xyY_to_XYZ(np.append(P_B, Y[2])) | |
| R = colour.chromatic_adaptation_VonKries(XYZ_Rn, D65, D50, CAT) | |
| G = colour.chromatic_adaptation_VonKries(XYZ_Gn, D65, D50, CAT) | |
| B = colour.chromatic_adaptation_VonKries(XYZ_Bn, D65, D50, CAT) | |
| P_a = np.vstack((R, G, B)) | |
| print(P_a) |
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