Re: [Lcms-user] Support of PreMultiplied RGBA image format...

[Bob F. <bfr...@si...>]

On Tue, 11 Dec 2012, jc...@gm... wrote:

> My 2p would be that pre-multiplied alpha is a very useful optimisation for compositing, but a hindrance for everything else.
> 
> Perhaps you could move your colour management after the compositing step?

Assuming that the input images are not in a consistent color space, 
then they should be color managed before the compositing step or else 
the result is indeterminate.

Bob
-- 
Bob Friesenhahn
bfr...@si..., http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/