Re: [Openexr-devel] Interpreting Deep

[Christopher Horvath]

It's really useful to have a composited z channel. With the deep samples having front & back, there's no obvious answer for how to exactly do that, so I usually just take the midpoint depth of each sample and composite that value just like another color channel. This isn't perfect, and suffers from all the problems that non-deep-depth always suffers from, particularly in the presence of volumetric data - but it works well as an input to functions that need a single depth.

On Fri, Oct 25, 2013 at 10:54 AM, Larry Gritz <address@hidden> wrote:

On Oct 25, 2013, at 1:21 AM, Peter Hillman wrote:

> I guess the question comes down to why you'd want to flatten Z.

Well, I was just thinking, in a command-line tool that was asked to flatten a deep file (for debugging, say, or generation of thumbnails), you might expect it to try to provide something for Z. Or should "flatten" imply dropping the Z channel entirely?

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Larry Gritz
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I think this situation absolutely requires that a really futile and stupid gesture be done on somebody's part. And we're just the guys to do it.