How to plot watermark detector response ???????
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Could anyone help me to plot the '*watermark detector response'* which shows the response of the watermark detector to 1000 randomly generated watermarks of which only one matches the watermark embedded.
Say I - original image; I'- watermarked image ;W - original watermark ; W*- extracted watermark ; And the similarity of the watermarks is found using the code given below:
function SIM=WM_detect(W',W)
SIM=sum(W'.*W)/sqrt(sum(W'.*W));
end
The plot should resemble like in the link given below: http://scien.stanford.edu/pages/labsite/2000/ee368/projects2000/project5/Tests%20and%20Results.htm {The last response plot(using spread spectrum) for rotated & cropped image. }
(or)
Hope to get a response as soon as possible
Thanks a lot.
2 Kommentare
Walter Roberson
am 17 Mär. 2012
Which plot there? There are a number, and none of them are clear matches for what you seem to be asking to plot.
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