formats.
"""
+from __future__ import division
+
import array
import os
import sys
def generate_1d_LUT_image(ramp_1d_path,
resolution=1024,
- min_value=0.0,
- max_value=1.0):
+ min_value=0,
+ max_value=1):
"""
Object description.
Return value description.
"""
- # print('Generate 1d LUT image - %s' % ramp1dPath)
-
- # open image
- format = os.path.splitext(ramp_1d_path)[1]
ramp = oiio.ImageOutput.create(ramp_1d_path)
- # set image specs
spec = oiio.ImageSpec()
spec.set_format(oiio.FLOAT)
# spec.format.basetype = oiio.FLOAT
ramp.close()
-def write_SPI_1d(filename, from_min, from_max, data, entries, channels):
+def write_SPI_1d(filename,
+ from_min,
+ from_max,
+ data,
+ entries,
+ channels,
+ components=3):
"""
Object description.
Return value description.
"""
- f = file(filename, 'w')
- f.write('Version 1\n')
- f.write('From %f %f\n' % (from_min, from_max))
- f.write('Length %d\n' % entries)
- f.write('Components %d\n' % (min(3, channels)))
- f.write('{\n')
- for i in range(0, entries):
- entry = ''
- for j in range(0, min(3, channels)):
- entry = '%s %s' % (entry, data[i * channels + j])
- f.write(' %s\n' % entry)
- f.write('}\n')
- f.close()
+ # May want to use fewer components than there are channels in the data
+ # Most commonly used for single channel LUTs
+ components = min(3, components, channels)
+
+ with open(filename, 'w') as fp:
+ fp.write('Version 1\n')
+ fp.write('From %f %f\n' % (from_min, from_max))
+ fp.write('Length %d\n' % entries)
+ fp.write('Components %d\n' % components)
+ fp.write('{\n')
+ for i in range(0, entries):
+ entry = ''
+ for j in range(0, components):
+ entry = '%s %s' % (entry, data[i * channels + j])
+ fp.write(' %s\n' % entry)
+ fp.write('}\n')
def generate_1d_LUT_from_image(ramp_1d_path,
output_path=None,
- min_value=0.0,
- max_value=1.0):
+ min_value=0,
+ max_value=1,
+ channels=3):
"""
Object description.
if output_path is None:
output_path = '%s.%s' % (ramp_1d_path, 'spi1d')
- # open image
ramp = oiio.ImageInput.open(ramp_1d_path)
- # get image specs
- spec = ramp.spec()
- type = spec.format.basetype
- width = spec.width
- height = spec.height
- channels = spec.nchannels
+ ramp_spec = ramp.spec()
+ ramp_width = ramp_spec.width
+ ramp_channels = ramp_spec.nchannels
- # get data
- # Force data to be read as float. The Python API doesn't handle
- # half-floats well yet.
+ # Forcibly read data as float, the Python API doesn't handle half-float
+ # well yet.
type = oiio.FLOAT
- data = ramp.read_image(type)
+ ramp_data = ramp.read_image(type)
- write_SPI_1d(output_path, min_value, max_value, data, width, channels)
+ write_SPI_1d(output_path, min_value, max_value,
+ ramp_data, ramp_width, ramp_channels, channels)
def generate_3d_LUT_image(ramp_3d_path, resolution=32):
def apply_CTL_to_image(input_image,
output_image,
- ctl_paths=[],
- input_scale=1.0,
- output_scale=1.0,
- global_params={},
- aces_CTL_directory=None):
+ ctl_paths=None,
+ input_scale=1,
+ output_scale=1,
+ global_params=None,
+ aces_ctl_directory=None):
"""
Object description.
Return value description.
"""
+ if ctl_paths is None:
+ ctl_paths = []
+ if global_params is None:
+ global_params = {}
+
if len(ctl_paths) > 0:
ctlenv = os.environ
- if aces_CTL_directory != None:
- if os.path.split(aces_CTL_directory)[1] != 'utilities':
- ctl_module_path = os.path.join(aces_CTL_directory, 'utilities')
+ if aces_ctl_directory is not None:
+ if os.path.split(aces_ctl_directory)[1] != 'utilities':
+ ctl_module_path = os.path.join(aces_ctl_directory, 'utilities')
else:
- ctl_module_path = aces_CTL_directory
+ ctl_module_path = aces_ctl_directory
ctlenv['CTL_MODULE_PATH'] = ctl_module_path
args = []
for ctl in ctl_paths:
args += ['-ctl', ctl]
args += ['-force']
- # args += ['-verbose']
args += ['-input_scale', str(input_scale)]
args += ['-output_scale', str(output_scale)]
args += ['-global_param1', 'aIn', '1.0']
args += [input_image]
args += [output_image]
- # print('args : %s' % args)
-
ctlp = Process(description='a ctlrender process',
cmd='ctlrender',
args=args, env=ctlenv)
ctl_paths,
lut_resolution=1024,
identity_LUT_bit_depth='half',
- input_scale=1.0,
- output_scale=1.0,
- global_params={},
+ input_scale=1,
+ output_scale=1,
+ global_params=None,
cleanup=True,
- aces_CTL_directory=None,
- min_value=0.0,
- max_value=1.0):
+ aces_ctl_directory=None,
+ min_value=0,
+ max_value=1,
+ channels=3):
"""
Object description.
Return value description.
"""
- # print(lutPath)
- # print(ctlPaths)
+ if global_params is None:
+ global_params = {}
lut_path_base = os.path.splitext(lut_path)[0]
min_value,
max_value)
- if identity_LUT_bit_depth != 'half':
+ if identity_LUT_bit_depth not in ['half', 'float']:
identity_LUT_image = '%s.%s.%s' % (lut_path_base, 'uint16', 'tiff')
convert_bit_depth(identity_LUT_image_float,
identity_LUT_image,
input_scale,
output_scale,
global_params,
- aces_CTL_directory)
+ aces_ctl_directory)
generate_1d_LUT_from_image(transformed_LUT_image,
lut_path,
min_value,
- max_value)
+ max_value,
+ channels)
if cleanup:
os.remove(identity_LUT_image)
Return value description.
"""
- # open image
transformed = oiio.ImageInput.open(transformed_LUT_image)
- # get image specs
transformed_spec = transformed.spec()
- type = transformed_spec.format.basetype
width = transformed_spec.width
height = transformed_spec.height
channels = transformed_spec.nchannels
- # rotate or not
if width != lut_resolution * lut_resolution or height != lut_resolution:
print(('Correcting image as resolution is off. '
'Found %d x %d. Expected %d x %d') % (
lut_resolution))
print('Generating %s' % corrected_LUT_image)
- #
- # We're going to generate a new correct image
- #
-
- # Get the source data
- # Force data to be read as float. The Python API doesn't handle
- # half-floats well yet.
+ # Forcibly read data as float, the Python API doesn't handle half-float
+ # well yet.
type = oiio.FLOAT
source_data = transformed.read_image(type)
- format = os.path.splitext(corrected_LUT_image)[1]
correct = oiio.ImageOutput.create(corrected_LUT_image)
- # set image specs
correct_spec = oiio.ImageSpec()
correct_spec.set_format(oiio.FLOAT)
correct_spec.width = height
for j in range(0, correct_spec.height):
for i in range(0, correct_spec.width):
for c in range(0, correct_spec.nchannels):
- # print(i, j, c)
dest_data[(correct_spec.nchannels *
correct_spec.width * j +
correct_spec.nchannels * i + c)] = (
ctl_paths,
lut_resolution=64,
identity_LUT_bit_depth='half',
- input_scale=1.0,
- output_scale=1.0,
- global_params={},
+ input_scale=1,
+ output_scale=1,
+ global_params=None,
cleanup=True,
- aces_CTL_directory=None):
+ aces_ctl_directory=None):
"""
Object description.
Return value description.
"""
- # print(lutPath)
- # print(ctlPaths)
+ if global_params is None:
+ global_params = {}
lut_path_base = os.path.splitext(lut_path)[0]
identity_LUT_image_float = '%s.%s.%s' % (lut_path_base, 'float', 'tiff')
generate_3d_LUT_image(identity_LUT_image_float, lut_resolution)
- if identity_LUT_bit_depth != 'half':
+ if identity_LUT_bit_depth not in ['half', 'float']:
identity_LUT_image = '%s.%s.%s' % (lut_path_base,
identity_LUT_bit_depth,
'tiff')
input_scale,
output_scale,
global_params,
- aces_CTL_directory)
+ aces_ctl_directory)
corrected_LUT_image = '%s.%s.%s' % (lut_path_base, 'correct', 'exr')
corrected_LUT_image = correct_LUT_image(transformed_LUT_image,
os.remove(transformed_LUT_image)
if corrected_LUT_image != transformed_LUT_image:
os.remove(corrected_LUT_image)
- # os.remove(correctedLUTImage)
def main():
p.add_option('--lut', '-l', type='string', default='')
p.add_option('--ctl', '-c', type='string', action='append')
- p.add_option('--lut_resolution_1d', '', type='int', default=1024)
- p.add_option('--lut_resolution_3d', '', type='int', default=33)
+ p.add_option('--lutResolution1d', '', type='int', default=1024)
+ p.add_option('--lutResolution3d', '', type='int', default=33)
p.add_option('--ctlReleasePath', '-r', type='string', default='')
p.add_option('--bitDepth', '-b', type='string', default='float')
p.add_option('--keepTempImages', '', action='store_true')
- p.add_option('--minValue', '', type='float', default=0.0)
- p.add_option('--maxValue', '', type='float', default=1.0)
- p.add_option('--inputScale', '', type='float', default=1.0)
- p.add_option('--outputScale', '', type='float', default=1.0)
+ p.add_option('--minValue', '', type='float', default=0)
+ p.add_option('--maxValue', '', type='float', default=1)
+ p.add_option('--inputScale', '', type='float', default=1)
+ p.add_option('--outputScale', '', type='float', default=1)
p.add_option('--ctlRenderParam', '-p', type='string', nargs=2,
action='append')
options, arguments = p.parse_args()
- #
- # Get options
- #
lut = options.lut
ctls = options.ctl
- lut_resolution_1d = options.lut_resolution_1d
- lut_resolution_3d = options.lut_resolution_3d
+ lut_resolution_1d = options.lutResolution1d
+ lut_resolution_3d = options.lutResolution3d
min_value = options.minValue
max_value = options.maxValue
input_scale = options.inputScale
ctl_release_path = options.ctlReleasePath
generate_1d = options.generate1d is True
generate_3d = options.generate3d is True
- bitdepth = options.bitDepth
+ bit_depth = options.bitDepth
cleanup = not options.keepTempImages
params = {}
- if options.ctlRenderParam != None:
+ if options.ctlRenderParam is not None:
for param in options.ctlRenderParam:
params[param[0]] = float(param[1])
args_start = len(sys.argv) + 1
args = []
- # print('command line : \n%s\n' % ' '.join(sys.argv))
-
- #
- # Generate LUTs
- #
if generate_1d:
print('1D LUT generation options')
else:
print('output scale : %s' % output_scale)
print('ctl render params : %s' % params)
print('ctl release path : %s' % ctl_release_path)
- print('bit depth of input : %s' % bitdepth)
+ print('bit depth of input : %s' % bit_depth)
print('cleanup temp images : %s' % cleanup)
if generate_1d:
generate_1d_LUT_from_CTL(lut,
ctls,
lut_resolution_1d,
- bitdepth,
+ bit_depth,
input_scale,
output_scale,
params,
generate_3d_LUT_from_CTL(lut,
ctls,
lut_resolution_3d,
- bitdepth,
+ bit_depth,
input_scale,
output_scale,
params,
projects / OpenColorIO-Configs.git / blobdiff