An excellent point. I'm quite happy to just live with the advice of "if you
want to composite a weird 4-channel spectral image, it's your responsibility to
affix an alpha channel and label it correctly."
-- lg
On Jun 14, 2012, at 3:37 PM, Will Rosecrans wrote:
> If we are trying to dance on our feet, we seem to be worrying about
> what happens when the user tells us to dance on our nose. Assuming
> RGBA in the case of four channels will be accurate for the
> overwhelming majority of cases where somebody is bother to ask for an
> over operation. If somebody has some weird requirements on n-channel
> multispectral images with regard to which channel is the alpha, why
> not just have the expectation that they need to set the ImageSpec
> correctly? Then the problem is solved for every operation, instead of
> having this discussion again for "under" and every other operator.
>
> So, personally, I would argue against the alpha_channel parameter as
> not actually being needed.
>
--
Larry Gritz
[email protected]
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