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doug-walkerKelSolaar
doug-walker
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KelSolaar
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Add Panasonic CLFs (#63)
* Add Panasonic CLFs Signed-off-by: Doug Walker <doug.walker@autodesk.com> * Fix formatting issue Signed-off-by: Doug Walker <doug.walker@autodesk.com> Co-authored-by: Thomas Mansencal <thomas.mansencal@gmail.com>
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‎opencolorio_config_aces/clf/transforms/panasonic/__init__.py‎

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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright Contributors to the OpenColorIO Project.
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from .generate import generate_panasonic
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__all__ = [
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"generate_panasonic",
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]

‎opencolorio_config_aces/clf/transforms/panasonic/generate.py‎

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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright Contributors to the OpenColorIO Project.
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"""
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*Panasonic* CLF Transforms Generation
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=====================================
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Defines procedures for generating Panasonic *Common LUT Format* (CLF)
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transforms for the OpenColorIO project.
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"""
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import PyOpenColorIO as ocio
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from pathlib import Path
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from opencolorio_config_aces.clf import (
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create_conversion_matrix,
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generate_clf,
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)
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__author__ = "OpenColorIO Contributors"
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__copyright__ = "Copyright Contributors to the OpenColorIO Project."
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__license__ = "New BSD License - https://opensource.org/licenses/BSD-3-Clause"
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__maintainer__ = "OpenColorIO Contributors"
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__email__ = "ocio-dev@lists.aswf.io"
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__status__ = "Production"
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__all__ = [
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"generate_panasonic",
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]
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DEST_DIR = Path(__file__).parent.resolve() / "input"
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TF_ID_PREFIX = "urn:aswf:ocio:transformId:1.0:"
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TF_ID_SUFFIX = ":1.0"
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CLF_SUFFIX = ".clf"
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def generate_panasonic():
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"""Make the CLF file for V-Log - V-Gamut plus matrix/curve CLFs."""
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# Based on the document "VARICAM_V-Log_V-Gamut.pdf" dated November 28, 2014.
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# The resulting CLF was reviewed by Panasonic.
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if not DEST_DIR.exists():
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DEST_DIR.mkdir()
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cut1 = 0.01
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b = 0.00873
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c = 0.241514
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d = 0.598206
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LIN_SLP = 1.0
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LIN_OFF = b
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LOG_SLP = c
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LOG_OFF = d
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LIN_SB = cut1
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BASE = 10.0
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lct = ocio.LogCameraTransform(
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base=BASE,
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linSideBreak=[LIN_SB] * 3,
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logSideSlope=[LOG_SLP] * 3,
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logSideOffset=[LOG_OFF] * 3,
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linSideSlope=[LIN_SLP] * 3,
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linSideOffset=[LIN_OFF] * 3,
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direction=ocio.TRANSFORM_DIR_INVERSE,
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)
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mtx = create_conversion_matrix("V-Gamut", "ACES2065-1", "Bradford")
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# Using the CSC ID here because there is a slight discrepancy between the matrix
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# coefficients of the CSC and IDT CTL and the CLF matches the CSC transform.
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aces_transform_id = (
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"urn:ampas:aces:transformId:v1.5:"
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"ACEScsc.Academy.VLog_VGamut_to_ACES.a1.1.0"
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)
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# Generate full transform.
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generate_clf(
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ocio.GroupTransform(
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transforms=[
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lct,
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mtx,
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]
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),
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TF_ID_PREFIX
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+ "Panasonic:Input:VLog-VGamut_to_ACES2065-1"
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+ TF_ID_SUFFIX,
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"Panasonic V-Log - V-Gamut (SUP v3) to ACES2065-1",
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DEST_DIR / ("VLog-VGamut_to_ACES2065-1" + CLF_SUFFIX),
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"Panasonic V-Log - V-Gamut (SUP v3)",
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"ACES2065-1",
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aces_transform_id,
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)
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# Generate transform for primaries only.
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generate_clf(
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ocio.GroupTransform([mtx]),
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TF_ID_PREFIX
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+ "Panasonic:Input:Linear-VGamut_to_ACES2065-1"
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+ TF_ID_SUFFIX,
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"Linear Panasonic V-Gamut (SUP v3) to ACES2065-1",
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DEST_DIR / ("Linear-VGamut_to_ACES2065-1" + CLF_SUFFIX),
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"Linear Panasonic V-Gamut (SUP v3)",
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"ACES2065-1",
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None,
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)
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# Generate named transform for log curve only.
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generate_clf(
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ocio.GroupTransform([lct]),
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TF_ID_PREFIX + "Panasonic:Input:VLog_Log_to_Linear" + TF_ID_SUFFIX,
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"Panasonic V-Log (SUP v3) Log to Linear Curve",
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DEST_DIR / ("VLog-Curve" + CLF_SUFFIX),
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"Panasonic V-Log (SUP v3) Log (arbitrary primaries)",
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"Panasonic V-Log (SUP v3) Linear (arbitrary primaries)",
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None,
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)
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return 0
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if __name__ == "__main__":
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import sys
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sys.exit(generate_panasonic())

‎opencolorio_config_aces/clf/transforms/panasonic/input/Linear-VGamut_to_ACES2065-1.clf‎

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<?xml version="1.0" encoding="UTF-8"?>
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<ProcessList compCLFversion="3" id="urn:aswf:ocio:transformId:1.0:Panasonic:Input:Linear-VGamut_to_ACES2065-1:1.0" name="Linear Panasonic V-Gamut (SUP v3) to ACES2065-1">
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<InputDescriptor>Linear Panasonic V-Gamut (SUP v3)</InputDescriptor>
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<OutputDescriptor>ACES2065-1</OutputDescriptor>
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<Matrix inBitDepth="32f" outBitDepth="32f">
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<Array dim="3 3">
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0.72461670413153 0.166915288193706 0.108468007674764
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0.021390245413146 0.984908155703054 -0.00629840111620093
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-0.00923556287076562 -0.00105690563900513 1.01029246850977
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</Array>
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</Matrix>
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</ProcessList>

‎opencolorio_config_aces/clf/transforms/panasonic/input/VLog-Curve.clf‎

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<?xml version="1.0" encoding="UTF-8"?>
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<ProcessList compCLFversion="3" id="urn:aswf:ocio:transformId:1.0:Panasonic:Input:VLog_Log_to_Linear:1.0" name="Panasonic V-Log (SUP v3) Log to Linear Curve">
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<InputDescriptor>Panasonic V-Log (SUP v3) Log (arbitrary primaries)</InputDescriptor>
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<OutputDescriptor>Panasonic V-Log (SUP v3) Linear (arbitrary primaries)</OutputDescriptor>
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<Log inBitDepth="32f" outBitDepth="32f" style="cameraLogToLin">
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<LogParams base="10" linSideSlope="1" linSideOffset="0.00873" logSideSlope="0.241514" logSideOffset="0.598206" linSideBreak="0.01" />
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</Log>
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</ProcessList>

‎opencolorio_config_aces/clf/transforms/panasonic/input/VLog-VGamut_to_ACES2065-1.clf‎

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<?xml version="1.0" encoding="UTF-8"?>
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<ProcessList compCLFversion="3" id="urn:aswf:ocio:transformId:1.0:Panasonic:Input:VLog-VGamut_to_ACES2065-1:1.0" name="Panasonic V-Log - V-Gamut (SUP v3) to ACES2065-1">
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<InputDescriptor>Panasonic V-Log - V-Gamut (SUP v3)</InputDescriptor>
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<OutputDescriptor>ACES2065-1</OutputDescriptor>
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<Info>
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<ACEStransformID>urn:ampas:aces:transformId:v1.5:ACEScsc.Academy.VLog_VGamut_to_ACES.a1.1.0</ACEStransformID>
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</Info>
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<Log inBitDepth="32f" outBitDepth="32f" style="cameraLogToLin">
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<LogParams base="10" linSideSlope="1" linSideOffset="0.00873" logSideSlope="0.241514" logSideOffset="0.598206" linSideBreak="0.01" />
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</Log>
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<Matrix inBitDepth="32f" outBitDepth="32f">
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<Array dim="3 3">
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0.72461670413153 0.166915288193706 0.108468007674764
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0.021390245413146 0.984908155703054 -0.00629840111620093
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-0.00923556287076562 -0.00105690563900513 1.01029246850977
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</Array>
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</Matrix>
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</ProcessList>

‎tasks.py‎

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ctx.run("python generate.py")
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with ctx.cd("opencolorio_config_aces/clf/transforms/blackmagic"):
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ctx.run("python generate.py")
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with ctx.cd("opencolorio_config_aces/clf/transforms/panasonic"):
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ctx.run("python generate.py")
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with ctx.cd("opencolorio_config_aces/clf/transforms/sony"):
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ctx.run("python generate.py")
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