I want use `oiiotool` to apply certain processing to, and then output, every
subimage (AOV) in an EXR file.
The -a option works for some things (like resizing each subimage), and I can
use `-sisplit` to get the subimages on the stack, then write them all to disk
with `-o:all=1`. But there doesn't seem to be a way to apply general processing
to each image on the stack, where some operations will have an expression that
should evaluated for each image.
What I can't seem to figure out, or maybe is missing, is a way to do the
equivalent of:
FOREACH image on the stack:
...process...
or alternatively:
WHILE stack size > 0:
...process...
POP
(What I want to do is resize every subimage, and for certain subimages
(1-channel monochrome images), turn it into a heatmap... so I need to apply a
"pipeline" involving stuff like --if, --subc {TOP.MINCOLOR}, --colormap, etc.
etc. to each subimage. I would also like name the output files based on each
subimage's "name" info.)
Maybe the answer is to write out the subimages and then process them
separately, but for performance reasons it would be nice to do it all in one
call to `oiiotool`.
My current idea for a workaround is two separate calls: one get the names of
all the subimages, and then I build a very long `oiiotool` command line with
args that extract, process, and output each named subimage separately.
Anyone know a better way?
Thanks,
Matt
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