Re: [csswg-drafts] [css-color-hdr-1] Compositing SDR in HDR outputs (#5323)

> The issue appears when the SDR image is mapped to be part of an HDR image (e.g. as picture-in-picture on a video stream) or alongside an HDR image. 

I expect that to be the majority use case.

Does that mean the HDR highlights become the primary white adaptive stimulus, or that the viewing condition changes? It seems we are getting into color appearance modelling (simultaneously viewed colors).

>  The presence of specular highlights will affect the shadows and mid-tones perception of the scaled SDR image - the peak brightness will look correct.

So, that requires re-rendering of the SDR image?  Also, we are talking about scaling a linear-light image not a gamma-encoded image, right?

-- 
GitHub Notification of comment by svgeesus
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/5323#issuecomment-691474697 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Saturday, 12 September 2020 11:37:16 UTC