[WM]: Watermark Detection Threshold Determination

[Eric Sheo <digitonkr@yahoo.com.sg>]

Hi everyone,

I have doubts on the determination of the 'detection
threshold'.

By approaching experimentally, assuming watermark
(org_wm) is the original gaussian sequence of
pseudo-random real numbers of length N.   

Step 1. I generate 1000 gaussian sequences of
pseudo-random real numbers of length N. 

Step 2. I calculate the normalized correlation (NC)
using org_wm with respect to each generated gaussian
sequences of pseudo-random real numbers (step1).

To determine the detection threshold, do i sum all the
normalized correlation (NC) and take the average of
the NC and is there anything wrong with my steps? Pls
give me your valuable advises. Thank you.

Eric

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