Performs a first order colour fit from given m2 colour matrix to m1 colour matrix. The resulting colour matrix is calculated using multiple linear regression.
The purpose of that object is for example matching of two ColorChecker colour rendition charts together.
| Parameters: |
|
|---|---|
| Returns: | Fitting colour matrix. |
| Return type: | ndarray, (3, 3) |
Examples
Colour 0.3>>> m1 = np.array([
... [0.1722481, 0.0917066, 0.06416938],
... [0.49189645, 0.2780205, 0.21923399],
... [0.10999751, 0.18658946, 0.29938611],
... [0.1166612, 0.14327905, 0.05713804],
... [0.18988879, 0.18227649, 0.36056247],
... [0.12501329, 0.42223442, 0.37027445],
... [0.64785606, 0.22396782, 0.03365194],
... [0.06761093, 0.11076896, 0.39779139],
... [0.49101797, 0.09448929, 0.11623839],
... [0.11622386, 0.04425753, 0.14469986],
... [0.36867946, 0.4454523, 0.06028681],
... [0.61632937, 0.32323906, 0.02437089],
... [0.03016472, 0.06153243, 0.29014596],
... [0.11103655, 0.30553067, 0.08149137],
... [0.4116219, 0.05816656, 0.04845934],
... [0.73339206, 0.53075188, 0.02475212],
... [0.47347718, 0.08834792, 0.30310315],
... [0., 0.25187016, 0.3506245],
... [0.76809639, 0.7848624, 0.77808297],
... [0.53822392, 0.54307997, 0.54710883],
... [0.35458526, 0.35318419, 0.35524431],
... [0.17976704, 0.18000531, 0.17991488],
... [0.09351417, 0.09510603, 0.09675027],
... [0.03405071, 0.03295077, 0.03702047]])
>>> m2 = np.array([
... [0.15579559, 0.09715755, 0.07514556],
... [0.3911314, 0.25943419, 0.21266708],
... [0.12824821, 0.1846357, 0.31508023],
... [0.12028974, 0.13455659, 0.074084],
... [0.19368988, 0.21158946, 0.37955964],
... [0.19957425, 0.36085439, 0.40678123],
... [0.48896605, 0.20691688, 0.05816533],
... [0.09775522, 0.16710693, 0.47147724],
... [0.39358649, 0.122334, 0.10526425],
... [0.10780332, 0.07258529, 0.16151473],
... [0.27502671, 0.34705454, 0.09728099],
... [0.43980441, 0.26880559, 0.05430533],
... [0.05887212, 0.11126272, 0.38552469],
... [0.12705825, 0.2578786, 0.13566464],
... [0.35612929, 0.07933258, 0.05118732],
... [0.48131976, 0.42082843, 0.07120612],
... [0.34665585, 0.15170714, 0.24969804],
... [0.08261116, 0.24588716, 0.48707733],
... [0.66054904, 0.65941137, 0.66376412],
... [0.48051509, 0.47870296, 0.48230082],
... [0.33045354, 0.32904184, 0.33228886],
... [0.18001305, 0.17978567, 0.18004416],
... [0.10283975, 0.1042468, 0.10384975],
... [0.04742204, 0.04772203, 0.04914226]])
>>> first_order_colour_fit(m1, m2)
array([[ 1.4043128..., 0.0112806..., -0.2029710...],
[-0.0998911..., 1.5012214..., -0.1856479...],
[ 0.2248369..., -0.0767236..., 1.0496013...]])