Notice of Meeting - ACES Gamut Mapping VWG - Meeting #21 - 7/23/2020

Recap:

  • We should test both @jedsmith’s original and @nick’s variation in our testing round
    • Look into near-primary kinks visible in the polar grid (also secondaries)
  • Invertibility:
    • What is that quality metric?
    • @Thomas_Mansencal: we need invertibility - AR/VR/Game Engines etc - needs to be visually decent
    • What are the cases for invertibility:
      • AR/VR
      • Camera Encoding Primaries
      • Motion Graphics
      • General ACES archive
    • Inverse of even fully saturated colors is already not an issue because of max RGB (max distance of 2)
  • @carolalynn will put a new section on the Dropbox paper for tests - VFX, Grading, and Other, and footage requirements for each - will start a new post to discuss
  • Where do we stand on the shadow rolloff / exposure invariance - default to 0 on shadow but possible option to increase for inverse?
  • @jedsmith’s latest version has control of threshold for all components, so we could for example push less on blue and more on red/green
  • Threshold parameter should be changed to describe size of confidence gamut, i.e.: 1.0-threshold

Recording and transcript

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