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Old 02-15-2003, 05:22 PM
Wombat Wombat is offline
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Join Date: Feb 2003
Posts: 1
Default Wavelets.

I was reading that steg can be detected by using wavelet analysis.
This gave me the idea of hiding data either within the wavelet coefficients or within one of the `scale` images.
Has anyone played with this?
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Old 02-19-2003, 07:42 PM
littlejohn littlejohn is offline
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Join Date: Feb 2003
Posts: 3
Default some tools

After some (fast) googling I found this ftp directory:

I haven't already tried any of the tools listed there, but maybe there are some interesting ones (jpeg-jsteg-v4.diff.gz is a patch to the Independent JPEG Group's jpeg tools which, I guess, uses the steganography wavelet method you were pointing to).


a paper on these methods is
but there's a lot of bibliography indeed.
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