Re: Principles of HDR in chrome

First let me say, thanks for forwarding the document to the list,
being timezone challenged from the point of view of being involved
with the meeting, it is really interesting to see some of what was
discussed.

Coming from the content creation side, I'll suggest that a simple
brightness/saturation slider probably is not enough to preserve the
original intent when transforming from a dark environment to a dim or
light environment, I'd consider a gamma and/or a black level type
slider to help deal with the various effects (Stevens, Hunt, etc).

Now obviously there is a performance trade off, both in terms of CPU
cycles and in user time 'playing with sliders'. I also realise that
adding more sliders can result in worse reproduction of an image than
with fewer. The colour science approach to this would be to use some
form of simple colour appearance model and let the system drive as
many of the parameters into the model and only give the users minimal
overrides.

Unfortunately there are no really well established models for HDR
viewing, but I think it would be worth considering how your block
diagram could be enhanced as such things evolve.

Kevin

Received on Thursday, 16 November 2017 09:45:35 UTC