Odp: [WM]: technique for rotation and transform resistant =

[=3D?ISO-8859-2?Q?Darek_Bogumi=3DB3?=3D <dbogumil@wp.pl>]

watermarking=20
	schemes
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References: <433909.73825.qm@web34310.mail.mud.yahoo.com>
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Hello,=20

You will find two papers about watermarking techniques resistant=20
against geometrical transformations on my webpage:

http://www.ii.pw.edu.pl/~dbogumil/
D.Bogumil, Reversing Global and Local Geometrical Distortions in=20
Image Watermarking. Proceedings of Information Hiding Workshop,=20
Toronto, Canada, May 2004.
D.Bogumil, An asymmetric image watermarking scheme resistant against=20
geometrical distortions. Signal Processing: Image Communication,=20
Elsevier, 21, 2006, 59-66.

Both methods are based on analysis of autocorrelation of template and=20
represent either private or public key watermarking.=20
There are also some references to other papers about securing=20
watermark resistance against geometrical attacks.

Regards,=20
  Dariusz Bogumil


Dnia 18-06-2007 o godz. 11:11 saba riaz napisa=B3(a):
> hi,
>   =20
>   What are the best techniques for Rotation and Transform resistant=20
watermarking schemes?
>   =20
>    -Thanks
>   =20
>   Saba



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