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Date: Wed, 17 May 2000 08:46:17 -0500 (CDT)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
X-Sender: bfriesen@scooby.simplesystems.org
To: Martin Bobrovsky <Martin.Bobrovsky@workforce.at>
cc: ImageMagick Mailing List <magick@wizards.dupont.com>
Subject: Re: watermarks/embossing
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If you can afford the Digimarc library (see
http://www.digimarc.com/licensing/sdk.html &
http://www.digimarc.com/news/pr00-13.html), Bill Radcliffe
<BillR@corbis.com> can send you source for an ImageMagick module to do
professional-grade watermarking.
ImageMagick's 'combine' utility supports simplistic hidden
watermarking via its -stegano option. If you want a visible logo, you
could use -compose to compose your logo on top of, or blended with,
the base image. Your visible logo can be mostly transparent in order
to not disturb the image too much.
See this interesting article about digital watermarking:
http://www.spie.org/web/oer/november/nov99/cover1.html
Bob
On Wed, 17 May 2000, Martin Bobrovsky wrote:
> Hi!
>
> Can someone tell how I achieve the effect of embossing a text onto an
> image? My intention is to "secure" images on the web by applying a symbol
> or text which on the one hand does not affect the impression of the image
> too much, but on the other hand, makes the image "unusable" for
> professional printing purposes ...
>
> thanks,
> martin
>
>
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======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us
http://www.simplesystems.org/users/bfriesen
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