colour_hdri.camera_space_to_XYZ_matrix¶
-
colour_hdri.
camera_space_to_XYZ_matrix
(xy, CCT_calibration_illuminant_1, CCT_calibration_illuminant_2, M_color_matrix_1, M_color_matrix_2, M_camera_calibration_1, M_camera_calibration_2, analog_balance, M_forward_matrix_1, M_forward_matrix_2, chromatic_adaptation_transform='Bradford')[source]¶ Returns the Camera Space to CIE XYZ matrix for given xy white balance chromaticity coordinates.
Parameters: - xy (array_like) – xy white balance chromaticity coordinates.
- CCT_calibration_illuminant_1 (numeric) – Correlated colour temperature of CalibrationIlluminant1.
- CCT_calibration_illuminant_2 (numeric) – Correlated colour temperature of CalibrationIlluminant2.
- M_color_matrix_1 (array_like) – ColorMatrix1 tag matrix.
- M_color_matrix_2 (array_like) – ColorMatrix2 tag matrix.
- M_camera_calibration_1 (array_like) – CameraCalibration1 tag matrix.
- M_camera_calibration_2 (array_like) – CameraCalibration2 tag matrix.
- analog_balance (array_like) – AnalogBalance tag vector.
- M_forward_matrix_1 (array_like) – ForwardMatrix1 tag matrix.
- M_forward_matrix_2 (array_like) – ForwardMatrix2 tag matrix.
- chromatic_adaptation_transform (unicode, optional) – {‘CAT02’, ‘XYZ Scaling’, ‘Von Kries’, ‘Bradford’, ‘Sharp’, ‘Fairchild’, ‘CMCCAT97’, ‘CMCCAT2000’, ‘CAT02_BRILL_CAT’, ‘Bianco’, ‘Bianco PC’}, Chromatic adaptation transform.
Returns: Camera Space to CIE XYZ matrix.
Return type: ndarray
Notes
- The reference illuminant is D50 as defined per
colour_hdri.models.dataset.dng.ADOBE_DNG_XYZ_ILLUMINANT
attribute.
References
Examples
>>> M_color_matrix_1 = np.array( ... [[0.5309, -0.0229, -0.0336], ... [-0.6241, 1.3265, 0.3337], ... [-0.0817, 0.1215, 0.6664]]) >>> M_color_matrix_2 = np.array( ... [[0.4716, 0.0603, -0.0830], ... [-0.7798, 1.5474, 0.2480], ... [-0.1496, 0.1937, 0.6651]]) >>> M_camera_calibration_1 = np.identity(3) >>> M_camera_calibration_2 = np.identity(3) >>> analog_balance = np.ones(3) >>> M_forward_matrix_1 = np.array( ... [[0.8924, -0.1041, 0.1760], ... [0.4351, 0.6621, -0.0972], ... [0.0505, -0.1562, 0.9308]]) >>> M_forward_matrix_2 = np.array( ... [[0.8924, -0.1041, 0.1760], ... [0.4351, 0.6621, -0.0972], ... [0.0505, -0.1562, 0.9308]]) >>> camera_space_to_XYZ_matrix( # doctest: +ELLIPSIS ... np.array([0.32816244, 0.34698169]), ... 2850, ... 6500, ... M_color_matrix_1, ... M_color_matrix_2, ... M_camera_calibration_1, ... M_camera_calibration_2, ... analog_balance, ... M_forward_matrix_1, ... M_forward_matrix_2) array([[ 2.1604087..., -0.1041... , 0.2722498...], [ 1.0533324..., 0.6621... , -0.1503561...], [ 0.1222553..., -0.1562... , 1.4398304...]])