Make a post with the commands you are using to modify your image and
tell us what you are trying to accomplish. It seems that you are
changing white to black somewhere where there is transparency. Is
that intended? Also post a link to your input and output images so
we can see what is going on.
Hi,
I am using convert to process images. The inputs and output are
PNGs which has some completely transparent pixels. identify -verbose
on an input file has a line like this:
Alpha: (255,255,255,255) #FFFFFFFF
Identify -verbose has a line on the output image like this:
Alpha: ( 0, 0, 0,255) #000000FF
The full output from both commands is at the end of this message.
When a user views the output image in a program known to not
completely support PNG, the pixels of the output image that should be
transparent are black. My guess is that this program is tossing out
the alpha channel entirely, and the alpha color #000000FF becomes
#000000, or black. I would like to make the alpha color #FFFFFFFF, so
that transparent pixels become white when transparency is dropped.
Can I chose the alpha color in ImageMagick? If so, how?
Sam
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