Re: watermark
Re: watermark
- Subject: Re: watermark
- From: David Wolfe <email@hidden>
- Date: Wed, 21 Oct 2009 13:13:22 -0400
If someone actually gets ImageMagick working completely on OSX, I'd
love to hear how. I've been trying on and off for about two years for
a wiki server. Have read some places that it's not really supported
for Macs, and that one should use instead PerlMagick. But I can't get
it to work properly with the wiki extensions I need.
On Oct 21, 2009, at 12:25 PM, Roger Howard wrote:
ImageMagick is a great suggestion - visible watermarking is trivial
using the "composite" command (one of the standard ImageMagick tools).
For instance, if you have a watermark.png with transparency built in
to the image (via an alpha) then the following would work:
composite -gravity center watermark.png image.tif result.jpg
This would take watermark.png, overlay it in the center of
image.tif, and save the results to result.jpg
There's also a "watermark" option, but that's mainly for watermark
images which have no transparency (you define the blending modes in
the script step, rather than using transparency in the watermark
image - which I find preferably).
Image Events/sips (both built in to OSX) don't support compositing
images, so they won't really help. ImageMagick is pretty
straightforward and enormously useful for anyone automating imaging
operations.
-R
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