The main problem seems to be renderer support and the lack of information on 
how to generate the needed subpixel mask from a raytracer. Do you know if there
was any advances in that area?

Cheers,
Thorsten


---
Thorsten Kaufmann
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From: Oiio-dev [mailto:[email protected]] On Behalf Of 
Jonathan Egstad
Sent: Dienstag, 6. Dezember 2016 23:24
To: OpenImageIO developers <[email protected]>
Subject: Re: [Oiio-dev] Deep merge

Try out OpenDCX!  :)
www.opendcx.org<http://www.opendcx.org>


On Dec 6, 2016, at 2:17 PM, Larry Gritz 
<[email protected]<mailto:[email protected]>> wrote:
So how does it work in Nuke? Does it just resample using the "closest" pixel?

It's well known how to combine multiple non-overlapping pixels into a single 
depth list -- that's what renderers do to turn subsample depth lists into pixel 
depth lists for deep output. I would assume that a filtered resampling boils 
down to roughly the same thing (with adjustment for the specific pixel 
weights). Though I don't pretend to understand what artifacts would result from 
filtered resampling of a depth image in this way.


On Dec 6, 2016, at 2:11 PM, Thorsten Kaufmann 
<[email protected]<mailto:[email protected]>> 
wrote:

​This is far from trivial. There is deep transform in Nuke, but it does not do 
any filtering and i am not sure there is a meaningful way to do that.

Cheers,
Thorsten

---
Thorsten Kaufmann
Production Pipeline Architect
Mackevision Medien Design GmbH
Forststraße 7
70174 Stuttgart
T +49 711 93 30 48 661
F +49 711 93 30 48 90
M +49 151 19 55 55 02
[email protected]<mailto:[email protected]>
www.mackevision.com<http://www.mackevision.com/?utm_source=E-Mail-Signatur&utm_medium=E-Mail&utm_campaign=Mackevision-Link>
Geschäftsführer: Armin Pohl, Joachim Lincke, Jens Pohl
HRB 243735 Amtsgericht Stuttgart
________________________________
Von: Oiio-dev 
<[email protected]<mailto:[email protected]>>
 im Auftrag von Larry Gritz <[email protected]<mailto:[email protected]>>
Gesendet: Dienstag, 6. Dezember 2016 18:34
An: OpenImageIO developers
Betreff: Re: [Oiio-dev] Deep merge

There's not currently a function in OIIO that does this. Does Nuke have deep 
resize? I guess it's theoretically possible, though you'd need to do a little 
math to figure out the right way to combine partial/filtered pixels, where each 
"pixel" is a list of depth+alpha samples.


On Dec 5, 2016, at 11:17 PM, Ben Andersen 
<[email protected]<mailto:[email protected]>> wrote:

Also! Are there methods of resampling a deep image?  If my B image is a 
different resolution than my A image/the pixel count is different, it would be 
nice to still be able to merge them together.
Thanks!
Ben

On Tue, Dec 6, 2016 at 4:23 AM Ben Andersen 
<[email protected]<mailto:[email protected]>> wrote:
Hi!
I'm looking at wrapping up a deep merge operation using the python bindings of 
oiio 1.7.
I see in the docs that there is support for reading and merge deep pixels.  Is 
the expected workflow for all deep images to loop over every pixel?  Is there a 
function I've overlooked that might do a deep merge for all samples in the 
image?
Wouldn't this mean that it's essentially single threaded to do a deep merge in 
python without setting up the threads myself?
Thanks!
Ben
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Larry Gritz
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