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Extracting EXR Resolution Levels

Posted: 2017-01-10T02:49:31-07:00
by Alex
Hi,

Does ImageMagick (specifically MagickCore) support extracting so called "resolution levels" from EXR images, and similar formats? If so please could someone point me in the right direction for documentation, as my google-fu is failing me.

For reference, here's the OpenEXR docs regarding resolution levels (search for "Levels and Level Modes"):
http://www.openexr.com/TechnicalIntroduction.pdf

Cheers,
- Alex.

Re: Extracting EXR Resolution Levels

Posted: 2017-01-10T04:03:00-07:00
by snibgo
If it does, IM would probably see the various levels as simply independent images, each with its own size.

If you can provide a link to sample file(s), we can give it a try.

Re: Extracting EXR Resolution Levels

Posted: 2017-01-10T04:07:05-07:00
by Alex
Thanks for the reply - ILM has a repo with some test images here that should work: https://github.com/openexr/openexr-imag ... Resolution

Re: Extracting EXR Resolution Levels

Posted: 2017-01-10T04:17:47-07:00
by snibgo
No, IM sees only one image per file:

Code: Select all

f:\web\im>%IM%identify kapaa.exr
kapaa.exr EXR 799x546 799x546+0+0 16-bit RGB 6.78MB 0.000u 0:00.000

f:\web\im>%IM%identify bonita.exr
bonita.exr EXR 550x832 550x832+0+0 16-bit RGB 2.304MB 0.000u 0:00.000

Re: Extracting EXR Resolution Levels

Posted: 2017-01-10T04:21:31-07:00
by Alex
Damn, that sucks - Guess I'll have to use OpenEXR directly.

Thanks for your help :).

Cheers,
- Alex.