[WM]: Query

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

Hello
I have a query regarding watermark attacks.

My assumption is that if watermarked images are attacked, and the watermark is successfully removed the quality of the image should
not be changed. 

If the quality of the image is changed then there is no need for an adversary to attack the images because there is no use for
having those modified images. 

Specaially i refer to some attacks that have been listed on some of the benchmarking applications like  Checkmark etc.
For example Threshhold, Bending, Warping, Arbitrary Linear Transform, Dithering these attacks change the quality of the image to
such an extent that it could be any useful (my assumption may b i m wrong)

Can anyone comment on these views????
Does a watermarking algorithm really needs to be robust against these attack from a practical point of view???

Thanks very much

Regards

Vidy


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