[WM]: Re: image watermarking using phase components of FFT

[Tan Hong <tanhong822@yahoo.com>]

Hi wateramarkers,
   
  Can anyone explain to me in more details what PSNR test in Stirmark 3.1 is?
The info I know is just a few lines:
  
[Test_PSNR]
; Strength of the watermark embedding
start=0
end=100
step=10
   
  What is the watermark and watermark strength here? How does this test work?
   
  Thank in advance
   
  Tan Hong.



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