Implements support for *ACES* colorspaces conversions and transfer functions.
"""
+from __future__ import division
+
import math
import numpy
import os
'get_LMTs_info',
'create_colorspaces']
-# Matrix converting *ACES AP1* primaries to *AP0*.
+# Matrix converting *ACES AP1* primaries to *ACES AP0*.
ACES_AP1_TO_AP0 = [0.6954522414, 0.1406786965, 0.1638690622,
0.0447945634, 0.8596711185, 0.0955343182,
-0.0055258826, 0.0040252103, 1.0015006723]
+# Matrix converting *ACES AP0* primaries to *ACES AP1*.
+ACES_AP0_TO_AP1 = [1.4514393161, -0.2365107469, -0.2149285693,
+ -0.0765537734, 1.1762296998, -0.0996759264,
+ 0.0083161484, -0.0060324498, 0.9977163014]
+
# Matrix converting *ACES AP0* primaries to *XYZ*.
ACES_AP0_TO_XYZ = [0.9525523959, 0.0000000000, 0.0000936786,
0.3439664498, 0.7281660966, -0.0721325464,
0.0000000000, 0.0000000000, 1.0088251844]
+# Matrix converting *ACES AP0* primaries to *XYZ*.
+ACES_XYZ_TO_AP0 = [1.0498110175, 0.0000000000, -0.0000974845,
+ -0.4959030231, 1.3733130458, 0.0982400361,
+ 0.0000000000, 0.0000000000, 0.9912520182]
+
def create_ACES():
"""
aces2065_1.family = 'ACES'
aces2065_1.is_data = False
aces2065_1.allocation_type = ocio.Constants.ALLOCATION_LG2
- aces2065_1.allocation_vars = [-15, 6]
+ aces2065_1.allocation_vars = [-8, 5, 0.00390625]
return aces2065_1
lut_resolution_1d,
cleanup,
name='ACEScc',
- min_value=0.0,
- max_value=1.0,
- input_scale=1.0):
+ min_value=0,
+ max_value=1,
+ input_scale=1):
"""
Creates the *ACEScc* colorspace.
cs.equality_group = ''
cs.family = 'ACES'
cs.is_data = False
+ cs.allocation_type = ocio.Constants.ALLOCATION_UNIFORM
+ cs.allocation_vars = [min_value, max_value]
ctls = [os.path.join(aces_ctl_directory,
'ACEScc',
- 'ACEScsc.ACEScc_to_ACES.a1.0.0.ctl'),
- # This transform gets back to the *AP1* primaries.
- # Useful as the 1d LUT is only covering the transfer function.
- # The primaries switch is covered by the matrix below:
- os.path.join(aces_ctl_directory,
- 'ACEScg',
- 'ACEScsc.ACES_to_ACEScg.a1.0.0.ctl')]
- lut = '%s_to_ACES.spi1d' % name
+ 'ACEScsc.ACEScc_to_ACES.a1.0.0.ctl')]
+ lut = '%s_to_linear.spi1d' % name
lut = sanitize(lut)
lut_resolution_1d,
'float',
input_scale,
- 1.0,
- {},
+ 1,
+ {'transferFunctionOnly':1},
cleanup,
aces_ctl_directory,
min_value,
- max_value)
+ max_value,
+ 1)
cs.to_reference_transforms = []
cs.to_reference_transforms.append({
ctls = [os.path.join(aces_ctl_directory,
'ACESproxy',
'ACEScsc.ACESproxy10i_to_ACES.a1.0.0.ctl'),
- # This transform gets back to the *AP1* primaries.
- # Useful as the 1d LUT is only covering the transfer function.
- # The primaries switch is covered by the matrix below:
- os.path.join(aces_ctl_directory,
- 'ACEScg',
- 'ACEScsc.ACES_to_ACEScg.a1.0.0.ctl')]
- lut = '%s_to_aces.spi1d' % name
+ # This transform gets back to the *AP1* primaries.
+ # Useful as the 1d LUT is only covering the transfer function.
+ # The primaries switch is covered by the matrix below:
+ os.path.join(aces_ctl_directory,
+ 'ACEScg',
+ 'ACEScsc.ACES_to_ACEScg.a1.0.0.ctl')]
+ lut = '%s_to_linear.spi1d' % name
lut = sanitize(lut)
ctls,
lut_resolution_1d,
'uint16',
- 64.0,
- 1.0,
+ 64,
+ 1,
{},
cleanup,
- aces_ctl_directory)
+ aces_ctl_directory,
+ 0,
+ 1,
+ 1)
cs.to_reference_transforms = []
cs.to_reference_transforms.append({
cs.equality_group = ''
cs.family = 'ACES'
cs.is_data = False
+ cs.allocation_type = ocio.Constants.ALLOCATION_LG2
+ cs.allocation_vars = [-8, 5, 0.00390625]
cs.to_reference_transforms = []
if bit_depth == 10:
cs.bit_depth = ocio.Constants.BIT_DEPTH_UINT10
- ADX_to_CDD = [1023.0 / 500.0, 0.0, 0.0, 0.0,
- 0.0, 1023.0 / 500.0, 0.0, 0.0,
- 0.0, 0.0, 1023.0 / 500.0, 0.0,
- 0.0, 0.0, 0.0, 1.0]
- offset = [-95.0 / 500.0, -95.0 / 500.0, -95.0 / 500.0, 0.0]
+ ADX_to_CDD = [1023 / 500, 0, 0, 0,
+ 0, 1023 / 500, 0, 0,
+ 0, 0, 1023 / 500, 0,
+ 0, 0, 0, 1]
+ offset = [-95 / 500, -95 / 500, -95 / 500, 0]
elif bit_depth == 16:
cs.bit_depth = ocio.Constants.BIT_DEPTH_UINT16
- ADX_to_CDD = [65535.0 / 8000.0, 0.0, 0.0, 0.0,
- 0.0, 65535.0 / 8000.0, 0.0, 0.0,
- 0.0, 0.0, 65535.0 / 8000.0, 0.0,
- 0.0, 0.0, 0.0, 1.0]
- offset = [-1520.0 / 8000.0, -1520.0 / 8000.0, -1520.0 / 8000.0, 0.0]
+ ADX_to_CDD = [65535 / 8000, 0, 0, 0,
+ 0, 65535 / 8000, 0, 0,
+ 0, 0, 65535 / 8000, 0,
+ 0, 0, 0, 1]
+ offset = [-1520 / 8000, -1520 / 8000, -1520 / 8000, 0]
cs.to_reference_transforms = []
'matrix': [0.75573, 0.22197, 0.02230, 0,
0.05901, 0.96928, -0.02829, 0,
0.16134, 0.07406, 0.76460, 0,
- 0.0, 0.0, 0.0, 1.0],
+ 0, 0, 0, 1],
'direction': 'forward'})
# Copied from *Alex Fry*'s *adx_cid_to_rle.py*
-1.121718645000000,
-0.926545676714876]
- REF_PT = ((7120.0 - 1520.0) / 8000.0 * (100.0 / 55.0) -
- math.log(0.18, 10.0))
+ REF_PT = ((7120 - 1520) / 8000 * (100 / 55) -
+ math.log(0.18, 10))
def cid_to_rle(x):
if x <= 0.6:
return interpolate_1D(x, LUT_1D_xp, LUT_1D_fp)
- return (100.0 / 55.0) * x - REF_PT
+ return (100 / 55) * x - REF_PT
def fit(value, from_min, from_max, to_min, to_max):
if from_min == from_max:
to_max - to_min) + to_min
num_samples = 2 ** 12
- domain = (-0.19, 3.0)
+ domain = (-0.19, 3)
data = []
for i in xrange(num_samples):
- x = i / (num_samples - 1.0)
- x = fit(x, 0.0, 1.0, domain[0], domain[1])
+ x = i / (num_samples - 1)
+ x = fit(x, 0, 1, domain[0], domain[1])
data.append(cid_to_rle(x))
lut = 'ADX_CID_to_RLE.spi1d'
'matrix': [0.72286, 0.12630, 0.15084, 0,
0.11923, 0.76418, 0.11659, 0,
0.01427, 0.08213, 0.90359, 0,
- 0.0, 0.0, 0.0, 1.0],
+ 0, 0, 0, 1],
'direction': 'forward'})
cs.from_reference_transforms = []
lut_resolution_1d=1024,
lut_resolution_3d=64,
cleanup=True,
- aliases=[]):
+ aliases=None):
"""
Creates the *ACES LMT* colorspace.
*ACES LMT* colorspace.
"""
+ if aliases is None:
+ aliases = []
+
cs = ColorSpace('%s' % lmt_name)
cs.description = 'The ACES Look Transform: %s' % lmt_name
cs.aliases = aliases
cs.equality_group = ''
cs.family = 'Look'
cs.is_data = False
+ cs.allocation_type = ocio.Constants.ALLOCATION_LG2
+ cs.allocation_vars = [-8, 5, 0.00390625]
pprint.pprint(lmt_values)
shaper_input_scale,
shaper_params) = shaper_info
- shaper_lut = '%s_to_aces.spi1d' % shaper_name
+ shaper_lut = '%s_to_linear.spi1d' % shaper_name
if not os.path.exists(os.path.join(lut_directory, shaper_lut)):
ctls = [shaper_to_ACES_CTL % aces_ctl_directory]
ctls,
lut_resolution_1d,
'float',
- 1.0 / shaper_input_scale,
- 1.0,
+ 1 / shaper_input_scale,
+ 1,
shaper_params,
cleanup,
- aces_ctl_directory)
+ aces_ctl_directory,
+ 0,
+ 1,
+ 1)
shaper_OCIO_transform = {
'type': 'lutFile',
ctls,
lut_resolution_3d,
'float',
- 1.0 / shaper_input_scale,
- 1.0,
+ 1 / shaper_input_scale,
+ 1,
shaper_params,
cleanup,
aces_ctl_directory)
if 'transformCTLInverse' in lmt_values:
ctls = [os.path.join(aces_ctl_directory,
- # TODO: Investigate "odt_values" undeclared
- # variable.
- odt_values['transformCTLInverse']),
+ lmt_values['transformCTLInverse']),
shaper_from_ACES_CTL % aces_ctl_directory]
lut = 'Inverse.%s.%s.spi3d' % (odt_name, shaper_name)
ctls,
lut_resolution_3d,
'half',
- 1.0,
+ 1,
shaper_input_scale,
shaper_params,
cleanup,
- aces_ctl_directory)
+ aces_ctl_directory,
+ 0,
+ 1,
+ 1)
cs.to_reference_transforms.append({
'type': 'lutFile',
lut_resolution_1d=1024,
lut_resolution_3d=64,
cleanup=True,
- aliases=[]):
+ aliases=None):
"""
Object description.
Return value description.
"""
+ if aliases is None:
+ aliases = []
+
cs = ColorSpace('%s' % odt_name)
cs.description = '%s - %s Output Transform' % (
odt_values['transformUserNamePrefix'], odt_name)
else:
shaper_params['legalRange'] = 0
- shaper_lut = '%s_to_aces.spi1d' % shaper_name
+ shaper_lut = '%s_to_linear.spi1d' % shaper_name
if not os.path.exists(os.path.join(lut_directory, shaper_lut)):
ctls = [shaper_to_ACES_CTL % aces_ctl_directory]
ctls,
lut_resolution_1d,
'float',
- 1.0 / shaper_input_scale,
- 1.0,
+ 1 / shaper_input_scale,
+ 1,
shaper_params,
cleanup,
- aces_ctl_directory)
+ aces_ctl_directory,
+ 0,
+ 1,
+ 1)
shaper_OCIO_transform = {
'type': 'lutFile',
ctls,
lut_resolution_3d,
'float',
- 1.0 / shaper_input_scale,
- 1.0,
+ 1 / shaper_input_scale,
+ 1,
shaper_params,
cleanup,
aces_ctl_directory)
ctls,
lut_resolution_3d,
'half',
- 1.0,
+ 1,
shaper_input_scale,
shaper_params,
cleanup,
cleanup,
name='log',
aliases=[],
- min_value=0.0,
- max_value=1.0,
- input_scale=1.0,
+ min_value=0,
+ max_value=1,
+ input_scale=1,
middle_grey=0.18,
- min_exposure=-6.0,
+ min_exposure=-6,
max_exposure=6.5):
"""
Creates the *Generic Log* colorspace.
aces_ctl_directory,
'utilities',
'ACESlib.OCIO_shaper_log2_to_lin_param.a1.0.0.ctl')]
- lut = '%s_to_aces.spi1d' % name
+ lut = '%s_to_linear.spi1d' % name
lut = sanitize(lut)
lut_resolution_1d,
'float',
input_scale,
- 1.0,
+ 1,
{'middleGrey': middle_grey,
'minExposure': min_exposure,
'maxExposure': max_exposure},
cleanup,
aces_ctl_directory,
min_value,
- max_value)
+ max_value,
+ 1)
cs.to_reference_transforms = []
cs.to_reference_transforms.append({
lmt_shaper_name_aliases = ['crv_lmtshaper']
lmt_params = {
'middleGrey': 0.18,
- 'minExposure': -10.0,
+ 'minExposure': -10,
'maxExposure': 6.5}
lmt_shaper = create_generic_log(aces_ctl_directory,
aliases=lmt_shaper_name_aliases)
colorspaces.append(lmt_shaper)
- shaper_input_scale_generic_log2 = 1.0
+ shaper_input_scale_generic_log2 = 1
# *Log 2* shaper name and *CTL* transforms bundled up.
lmt_shaper_data = [
log2_shaper_name_aliases = ["crv_%s" % compact(shaper_name)]
log2_params = {
'middleGrey': 0.18,
- 'minExposure': -6.0,
+ 'minExposure': -6,
'maxExposure': 6.5}
log2_shaper = create_generic_log(
aliases=log2_shaper_name_aliases)
colorspaces.append(log2_shaper)
- shaper_input_scale_generic_log2 = 1.0
+ shaper_input_scale_generic_log2 = 1
# *Log 2* shaper name and *CTL* transforms bundled up.
log2_shaper_data = [
ACES = create_ACES()
ACEScc = create_ACEScc(aces_ctl_directory, lut_directory,
- lut_resolution_1d, cleanup)
+ lut_resolution_1d, cleanup,
+ min_value=-0.35840, max_value=1.468)
colorspaces.append(ACEScc)
ACESproxy = create_ACESproxy(aces_ctl_directory, lut_directory,
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