Hi, Hugh. Can you clarify whether you want to
(a) make a new RGB image R from B but G and B from A?
(b) make a new image with an additional channel, yielding {R, G, B, and New},
where R,G,B came from A and New is the R channel from B?
?
> On Aug 8, 2022, at 8:14 AM, Hugh Macdonald <hugh.macdon...@scanlinevfx.com>
> wrote:
>
> Hey all,
>
>
> I'm not overly familiar with the OIIO python API, so apologies if this is
> quite a simple question! I can't find any information online on how to do
> this with the Python API...
>
> I've got 2 EXRs, both with RGB channels, and I'd like to take the R channel
> from one of them and put it into another channel in the other.
>
> I've been looking at doing a 2-step process. The first step being to rename
> the channels in one ImageBuf, and to remove the unneeded channels, and the
> second being to use ImageBufAlgo.channel_append() to combine the two images
> together.
>
>
> This feels like it is unnecessarily 2 steps. Could someone point me at some
> examples for how to do this in a single step?
>
>
> I'm sure that this is pretty simple, but all the examples that I can find are
> for how to do this kind of thing using oiiotool, rather than doing it
> directly using the API.
>
>
> Thanks
>
> --
> Hugh
>
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>
--
Larry Gritz
l...@larrygritz.com
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