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Re: watermark
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Re: watermark


  • Subject: Re: watermark
  • From: David Wolfe <email@hidden>
  • Date: Wed, 21 Oct 2009 14:17:32 -0400

I've tried to install it both via CPAN (limited success) and via some standalone package from the ImageMagick website (less success) on Mac OSX 10.5 server. Once I've installed it, some commands will run, others will not. The wiki platform we're using is Perl-based and runs on top of Server's built-in Apache. The extensions call ImageMagick to provide such tasks as thumbnail gallery building, search users by photo, etc. I can never get the whole package to work because of unresolvable dependencies. Because I can't get the whole thing to work, the extensions that call it won't work either.

I have not tried Fink or MacPorts. Those are both great suggestions and I'll try them when I get a chance.

David

On Oct 21, 2009, at 2:01 PM, Mark J. Reed wrote:

I use IM on my Mac all the time.  How did you install it and what
problems are you seeing?

I don't recall offhand if I installed it via Fink or MacPorts, and I"m
not on my Mac right now, but it works fine..

On Wed, Oct 21, 2009 at 1:13 PM, David Wolfe <email@hidden> wrote:
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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-- Mark J. Reed <email@hidden>


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References: 
 >Re: watermark (From: Rounak Jain <email@hidden>)
 >Re: watermark (From: Gary <email@hidden>)
 >Re: watermark (From: Roger Howard <email@hidden>)
 >Re: watermark (From: David Wolfe <email@hidden>)
 >Re: watermark (From: "Mark J. Reed" <email@hidden>)

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