colour.JMh_CIECAM02_to_CAM02UCS¶
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colour.
JMh_CIECAM02_to_CAM02UCS
(JMh)[source]¶ Converts from CIECAM02 \(JMh\) correlates array to Luo et alii (2006) CAM02-UCS colourspace \(J'a'b'\) array.
Parameters: JMh (array_like) – CIECAM02 correlates array \(JMh\). Returns: Luo et alii (2006) CAM02-UCS colourspace \(J'a'b'\) array. Return type: ndarray References
Examples
>>> from colour.appearance import ( ... CIECAM02_VIEWING_CONDITIONS, ... XYZ_to_CIECAM02) >>> XYZ = np.array([19.01, 20.00, 21.78]) >>> XYZ_w = np.array([95.05, 100.00, 108.88]) >>> L_A = 318.31 >>> Y_b = 20.0 >>> surround = CIECAM02_VIEWING_CONDITIONS['Average'] >>> specification = XYZ_to_CIECAM02( ... XYZ, XYZ_w, L_A, Y_b, surround) >>> JMh = (specification.J, specification.M, specification.h) >>> JMh_CIECAM02_to_CAM02UCS(JMh) array([ 54.9043313..., -0.0844236..., -0.0684831...])