ACES 1.0 OpenColorIO config, a presentation at Siggraph 2015, on the structure and functionality of the ACES 1.0 OpenColorIO configuration

1. 
ACES 1.0 OpenColorIO config
Haarm-Pieter Duiker
Duiker Research

2. Resources
http://www.oscars.org/aces
Documentation, Google group
https://github.com/hpd/OpenColorIO-Configs
OCIO configs

3. Basic ACES system

4. Detailed ACES System

5. Mapping ACES to OCIO
ColorspaceTransform Colorspace Colorspace /
Display / View
TransformTransform /
Look
Colorspace
OCIO concepts
ACES components

6. Configuration Origin
An ACES release is defined by a
set of CTL files that define the
transforms in the release.
Python scripts, provided with the
config, bake the results of the
ACES CTL transforms into LUTs
and wrap the results in an OCIO
config structure

7. Configuration Structure
Colorspaces grouped in Families
Displays / Views
Roles

8. Families of Colorspaces
Family
ACES
ADX
Look
Output
Input
Utility
Roles
Aliases
Colorspaces
ACES2065-1, ACEScg, ACEScc, ACESproxy
ADX10, ADX16
0.1, 0.2, and 0.7 ACES Look Transforms
sRGB (D60 Sim.), Rec.709, Rec.2020, etc.
ARRI, Canon, GoPro, Panasonic, RED, Sony
Shapers, Generic spaces
Aliases to the OCIO ‘role’ assignments
Alias names with all lower case and no spaces.

9. Displays / Views
• sRGB (D60 sim.)
• DCDM
• DCDM (P3 Gamut Clip)
• P3-D60
• P3-DCI
• P3-D60 PQ 1000 nits
• P3-D60 PQ 2000 nits
• P3-D60 PQ 4000 nits
• Rec.2020
• Rec.709
• Rec.709 (D60 sim.)
• Diagnostic Views
• Raw
• Log
A single ‘ACES’ Display with views for each ACES Output Transform

10. ACES 1.0 OCIO config in Applications
Config usage tested in
• Nuke
• Maya
• Modo
• Mari
• Fusion
Config generation tested on
• OSX
• Linux

11. ACES 1.0 in Nuke

12. ACES 1.0 in Nuke

13. ACES 1.0 in Maya

14. ACES 1.0 in Maya

15. Extras
Pre-baked LUTs
● supporting ACES in
applications that don’t (or
didn’t) support OCIO
● Flame, Lustre, Houdini, Maya,
Photoshop

16. Python scripts
Python scripts generate OCIO
configuration from CTL files that
define the ACES transforms
Allow customization of
• LUT resolution
• Display / View structure
• Custom Looks

17. Thanks
Steve Agland
Joe Bogacz
Jack Binks
Scott Dyer
Alex Fry
Alex Forsythe
Joseph Goldstone
Jim Houston
Thomas Mansencal
Robert Molholm
Nikola Milosevic
Will McCown
Graeme Nattress
David Newman
Sam Richards
Erik Strauss
Doug Walker
Kevin Wheatley

18. Resources
http://www.oscars.org/aces
Documentation, Google group
https://github.com/hpd/OpenColorIO-Configs
OCIO configs

19. Questions
Sign up for email  oscars.org/aces
Twitter  @AcademyACES
Questions  acessupport@oscars.org
Haarm-Pieter Duiker
Duiker Research
hpd@duikerresearch.com