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Re: [Openexr-devel] Cineon -> half conversion?

From: Paul Miller
Subject: Re: [Openexr-devel] Cineon -> half conversion?
Date: Wed, 02 Mar 2005 09:03:27 -0600
User-agent: Mozilla Thunderbird 1.0 (Windows/20041206)

Ken McGaugh wrote:
Paul Miller wrote:
Does anyone have a good reference for Cineon log -> linear half conversion?

The method I recommend comes from Josh Pines (who monitors this list). I'll summarize it by showing how we do it here, including the header attributes we
use to store the parameters controlling the conversion.

Thanks Ken - thats look similar to what I had found, but the contrast looks better.

Note that nowhere is there any reference to "black" or "white". They are video
concepts and should only be used when preparing pixel values for display.

I like this a lot. I don't suppose adding display controls for black and white would essentially just drive a scale/bias in the HDR shader?

Paul Miller | address@hidden | | Got Tivo?

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