2024-04-22

April 22, 2024

Host: Carol Payne, Doug Walker

Secretary: Carol Payne

Attendees: 

ASWF Color Interop Forum Meeting Notes

• Overview of new GitHub site and Project board

  • https://github.com/AcademySoftwareFoundation/ColorInterop

    • Use Issues to start discussions

    • Repo will follow OCIO's license and contribution setup (BSD-3, CLA required for contribution)

  • https://github.com/orgs/AcademySoftwareFoundation/projects/29/views/1

    • Project board for tracking work

    • New issues get automatically added to the "later" backlog to later be manually categorized

    • Eventually we'll use this for meeting agendas as well, but that will come later

• First work item: Core color spaces for texturing/rendering

  • Starting list is the current list of color spaces in MaterialX.

  • Intent is a minimal set, not a maximal set that covers all use cases

  • Jonathan Stone: should we use the term "asset" color spaces instead of just textures? Because it can refer to procedurally generated data as well, not just images stored on disk. 

  • Carol: yes, good point. The definitions of these words and terminology and why we use them is part of this work and will need to be documented

  • Nick Porcino: Invertibility point (check recording to make sure I state this right)

  • srgb_texture: There is a good slack thread about this between Doug and Larry on the #color-interop-forum channel for lots of detail

  • Lots of discussion around scene/display srgb texture and what it is (and is not) please refer to the recording for more

  • Mention of Thomas' and other's new work on Color Science Precis (https://colour-science.github.io/colour-science-precis/) - to help with foundational color science concepts in the motion picture / CG industry

  • We know that a lot of folks are interested in definitions of colorspaces that go beyond asset/texture/rendering. We hear that! However, we want to scope this small at first, tackle this use case, and move from there.

  • Spreadsheet for working color space list: https://docs.google.com/spreadsheets/d/1Xe8S4H6-Zf0vBYSFRX6fLzEHX34ye02Q5ghGe1DB7sA/edit#gid=0

  • Goal is to minimize the list of spaces, not maximize. We want to define only the core set based on published standards and ubiquitous in their usage. 

  • Please comment on this list and help us solidify a draft for review at next month's meeting. We need to do a lot of this work asynchronously, and keep these meetings for review, approval, prioritization.

Slides:

Meeting Recording: