Re: [WM]: Question about QIM

["Vidyasagar Potdar" <Vidyasagar.Potdar@cbs.curtin.edu.au>]

Hello Eugene

My algorithm used QIM approach
I have studies 16 different attacks on images using the QIM approach I have implemented the same in MATLAB Plz visit my website and
download the same http://www.fit.cbs.curtin.edu.au/~potdarv/
The title of the paper is:
V. Potdar, S. Han, E. Chang, "Self Image Logo Embedding: A Robust Watermarking Algorithm in the Wavelet Domain"
I hope this is helpful to you
Regards


POTDAR Vidyasagar M.

Doctoral Researcher and Associate Lecturer @ Curtin University of Technology Address  214 Hill View Terrace, Bentley, Perth 6102
Mobile    (+61) 04  2124 7048
Office     (+61) 08  9266 3171 or 1057
Web       http://www.ceebi.research.cbs.curtin.edu.au/~potdarv

WINNER's don't do different things
               They do things DIFFERENTLY
>>> Eugene Kurbatov <e_kurbatov@yahoo.com> 01/03/06 12:43 AM >>>
Hello all,
   
  I worked on SS watermarking before and now I try to understand QIM approach (using well-known Chen and Wornell's article). So I
have some questions about it.
   
  1) It seems to me, that QIM is really good technique in cases when there are no distortions, or these distortions are very little.
But if QIM undergoes some malicious attack, it can be destroyed easier than SS watermark. Is it right? Maybe you could give me link
to some articles where is described behaviour of QIM system under malicious attacks (or at least additive noise attack).
   
  2) Do you know any real QIM systems for images? Maybe you are already implemented it? All links to articles are welcome. If you
sent me source codes in MatLab or C, I would be very grateful.
   
  Many thanks in advance!
   
  Best regards, Evgeny Kurbatov.
  St-Petersburg State University of Telecommunications.



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