__maintainer__ = 'Colour Developers'
__email__ = '*****@*****.**'
__status__ = 'Production'
__all__ = [
'JZAZBZ_CONSTANTS', 'JZAZBZ_XYZ_TO_LMS_MATRIX', 'JZAZBZ_LMS_TO_XYZ_MATRIX',
'JZAZBZ_LMS_P_TO_IZAZBZ_MATRIX', 'JZAZBZ_IZAZBZ_TO_LMS_P_MATRIX',
'XYZ_to_JzAzBz', 'JzAzBz_to_XYZ'
]
JZAZBZ_CONSTANTS = Structure(b=1.15,
g=0.66,
d=-0.56,
d_0=1.6295499532821566 * 10**-11)
JZAZBZ_CONSTANTS.update(ST2084_CONSTANTS)
JZAZBZ_CONSTANTS.m_2 = 1.7 * 2523 / 2**5
"""
Constants for :math:`J_zA_zB_z` colourspace and its variant of the perceptual
quantizer (PQ) from Dolby Laboratories.
Notes
-----
- The :math:`m2` constant, i.e. the power factor has been re-optimized during
the development of the :math:`J_zA_zB_z` colourspace.
JZAZBZ_CONSTANTS : Structure
"""
JZAZBZ_XYZ_TO_LMS_MATRIX = np.array([
[0.41478972, 0.579999, 0.0146480],
[-0.2015100, 1.120649, 0.0531008],
__maintainer__ = 'Colour Developers'
__email__ = '*****@*****.**'
__status__ = 'Production'
__all__ = [
'CONSTANTS_JZAZBZ', 'MATRIX_JZAZBZ_XYZ_TO_LMS', 'MATRIX_JZAZBZ_LMS_TO_XYZ',
'MATRIX_JZAZBZ_LMS_P_TO_IZAZBZ', 'MATRIX_JZAZBZ_IZAZBZ_TO_LMS_P',
'XYZ_to_JzAzBz', 'JzAzBz_to_XYZ'
]
CONSTANTS_JZAZBZ = Structure(b=1.15,
g=0.66,
d=-0.56,
d_0=1.6295499532821566 * 10**-11)
CONSTANTS_JZAZBZ.update(CONSTANTS_ST2084)
CONSTANTS_JZAZBZ.m_2 = 1.7 * 2523 / 2**5
"""
Constants for :math:`J_zA_zB_z` colourspace and its variant of the perceptual
quantizer (PQ) from Dolby Laboratories.
Notes
-----
- The :math:`m2` constant, i.e. the power factor has been re-optimized during
the development of the :math:`J_zA_zB_z` colourspace.
CONSTANTS_JZAZBZ : Structure
"""
MATRIX_JZAZBZ_XYZ_TO_LMS = np.array([
[0.41478972, 0.579999, 0.0146480],
[-0.2015100, 1.120649, 0.0531008],