How to search for words in binaries (jpg,bmp,tif,...) ??

Hello,
is it possible to index words from images with tenable effort ?
We are developing a document-management-system and it would be nice
when search includes images.
I would appreciate very much any suggestions, links or solutions.
regards,
Tim

>
Do you mean words in images in the sense of an image
comment (which is not visible when the image is
displayed, but some image editors can detect and
expose as an image property), or as text displayed as
part of the image, like this:
http://developer.java.sun.com/images/v4_java_sun_com.gi
If the latter, forget it.Hello,
first thanks for answers, I was looking for a possibility to search for text in images in order to save it in a database.
So its the latter :(
I thought it could be possible to use any scanner-drivers for this purpose:
http://www.openarchive.com/echive_tifindexer.htm
But I'm not sure how to achieve this.
regards,
Tim

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