I've got thousands of tiffs, each has two alphas (created in
Photoshop)... I'd like to use ImageMagick to draw into the RGB
channels usiing regions defined by the alphas. For instance, fill RGB
with black in the region defined by alpha 1, and fill RGB with white
in the region defined by alpha 2... I've never used IM for drawing
into images before, and am having a hard time figuring out where to
start.
For instance, if I used mogrify, how do define a shape for the -draw
command based on the shape defined in an alpha? Do I need to save the
alpha out to a file, and then use "-draw filename"?
Thanks for any pointers in the right direction...
-Rh
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