Notice of Meeting - ACES Gamut Mapping VWG - Meeting #29 - 9/17/2020

Recap:

  • @LarsB notes he’s already had to push the power coefficient below 1 - down to 0.5
  • @LarsB also notes that the algorithm causes noise crosstalk between channels, and can increase appearance (typically from blue to green). Suggested synthetic image to test.
  • @joseph recommends shooting an over/under for a test, also deliberately mess up the color balance in raw
  • @sdyer is uploading the Garlic film scan for us to take a look at to double check efficacy with film applications
  • @carolalynn stated a proposal for how we might run user testing, will surface this to the other time zone and add things to the dropbox paper with more info.
  • @carolalynn will also be sending a general “update” mail/post to ACES central and the original group list to elicit more feedback and source candidates for testing
  • @matthias.scharfenber showed his Nuke script with a modified shaper space to accommodate large negative values to then encapsulate the algorithm into a 3D LUT. We are not sure of the benefits of putting this out there, as it’s not the ideal implementation. But could be useful for OCIO 1.0 applications possibly, with many cautions and red flags and warning signs.

Recording and Transcript