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[WM]: Correlation in Dwt domain



Hi all,
  I am fairly new to watermarking and am looking at implementing some schemes, particularly in the wavelet domain. However I am
having difficulty with some of the detection techniques that use correlation. I cannot seem to repeat the results the authors find
in regards to the value of the correlation value and the threshold. I would appreciate if someone could explain to me how it works
or supply me with some Matlab code.
Any help would be gratefully appreciated.
Thanks
Michael


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