Re: [WM]: some explanation

[Madan Ankapura <micromysore@gmail.com>]

In the context of watermarking,
when someone claims that their watermarking scheme is invariant/resiliant to rotation and translation, it means in simple words,
that the watermark survives the process.

Transfomations are very simple operations, which will not introduce considerable visible distortion but tend to defeat the watermark
detector (if it not taken care of).

For more information : check out checkmark or stirmark attacks. 

for techquies which are invariant to some transformations, you can start at this link ..
http://www.watermarkingworld.org/faq.html#SECTION00065000000000000000

-madan ankapura
madan.ankapura@watermarkingworld.org

On 4/22/05, Michel Chekrallah <chekrallah_michel@hotmail.com> wrote:
> Hi great community,
> 
> Can someone give me an explanation about what is Invariant to Rotation
>and Translation?
> 
> Thanks,
> 
>


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