- From: Christopher Cameron via GitHub <sysbot+gh@w3.org>
- Date: Tue, 04 Feb 2025 11:17:34 +0000
- To: public-css-archive@w3.org
> What about HDR images that don't use ISO 21496-1 gain maps? There is a similar proposal in ICC that defines this mapping as a global tone map. I don't think it's share-able yet, unfortunately. It is also representable by this scheme. Also if there is no ICC global tone map, and no other metadata, then ISO 22028-5 is working to define how this would be tone mapped "by default". (BTW, I'd like for us to eventually have WPT tests for all 3 of these cases: gain map tone mapping, global profile tone mapping, and default tone mapping ... hopefully by the end of the year?). > color-hdr(matching url(myImage.png) I suspect that we'll want to provide something like the ICC global tone map as metadata also for canvases. And so I think something more like that metadata would be a better "match". There are also some parameters in the image metadata to account for the fact that image data is in [0,1] (the min/max/gamma parameters), which don't apply to CSS colors that can specify any value. > Any thoughts on HDR video? There is a proposal for gainmap support in AV1 video. I would like for there to be a uniform approach on global tone mapping between ICC and video as well. -- GitHub Notification of comment by ccameron-chromium Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/11616#issuecomment-2633603943 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 4 February 2025 11:17:35 UTC