RIMM ROMM RGB D65 to ACEScg

rimm_romm_rgb_d65_to_aces_cg.py

# Using latest colour develop branch.

import colour

D65 = colour.ILLUMINANTS['cie_2_1931']['D65']
P = colour.ROMM_RGB_COLOURSPACE.primaries
W = colour.ROMM_RGB_COLOURSPACE.whitepoint

P_a = colour.chromatically_adapted_primaries(P, W, D65)

ROMM_RGB_COLOURSPACE_D65 = colour.RGB_Colourspace(
    'ROMM RGB D65', P_a, D65, 'D65')

# Conversion matrices are not given on instantiation thus their computation is forced.
ROMM_RGB_COLOURSPACE_D65.use_derived_transformation_matrices()

colour.RGB_to_RGB_matrix( 
    ROMM_RGB_COLOURSPACE_D65,
    colour.ACES_CG_COLOURSPACE)

# array([[ 1.17118518, -0.04109626, -0.13008892],
#        [-0.06489362,  1.06969485, -0.00480123],
#        [ 0.00836888, -0.00222384,  0.99385496]])