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Re: [WM]: question about blind detection
Angela,
Take a look at the following paper (you can download it from my geocities web page listed
in my sig below).
M. L. Miller and J. A. Bloom, ``Computing the Probability of False Watermark Detection'',
Proceedings of the Third International
Workshop on Information Hiding, pp. 146-158, 1999.
In section 3.2 of this paper, we show how you can estimate the probability of false
detection after assuming that the distribution
of Z values is approximately Gaussian. You can then use this to set the detection
threshold for a desired probability of false
detection.
- Jeffrey
angela he wrote:
> Hi,all
>
> I am brand new in this area of watermarking. Now I am doing audio watermarking using
Spread Spectrum method. I have a question:
>
> In blind detection (without original signal),how to decide the threshold of wmk
detection using Fisher Z-statistic?
>
> Or can u recommend me some paper dealing with this problem?
>
> Thank you so much!
>
> Angela
--
Dr. Jeffrey A Bloom, Video and Web Informatics
Sarnoff Corporation, 201 Washington Road, CN 3500, Princeton, NJ 08543-5300
Email: jbloom@sarnoff.com http://www.geocities.com/Jeffrey_Bloom
Phone: (609) 734-3287 Fax: (609) 734-2662
----------
Digital Watermarking
Morgan Kaufmann Publishers, 2001
http://www.mkp.com/books_catalog/catalog.asp?ISBN=1-55860-714-5
Purchase from Amazon.com
http://www.amazon.com/exec/obidos/ASIN/1558607145/jeffrebloomsh-20
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