RE: [WM]: Watermark is a pseudo random string why??

["Joshua Neil" <jneil@lanl.gov>]

A pseudo-random string reduces the effectiveness of statistical attacks = on the watermark.  That does not mean, however, that real
data cannot be = used.
For example, one common way to create a pseudo-random string from data = is to encrypt the string first.  The encryption (if it is
good) will create = the pseudo-random string, then decryption can be performed after extracting = the watermark.

Josh Neil

-----Original Message-----
From: watermarking-owner@watermarkingworld.org
[mailto:watermarking-owner@watermarkingworld.org] On Behalf Of Ruan, = Huawei
Sent: Friday, November 19, 2004 1:44 AM
To: <watermarking@watermarkingworld.org>
Subject: RE: [WM]: Watermark is a pseudo random string why??

chaotic signal is a good example which is psudo random but there is  ________________________________

From: watermarking-owner@watermarkingworld.org on behalf of christine
Sent: Fri 11/19/2004 1:21 AM
To: <watermarking@watermarkingworld.org>
Subject: RE: [WM]: Watermark is a pseudo random string why??



I think pseudo random is to create a noise similar data, but still has  If I'm wrong, can anyone correct me?
Thank you.

Christine D.

-----Original Message-----
From: watermarking-owner@watermarkingworld.org
[mailto:watermarking-owner@watermarkingworld.org] On Behalf Of Malapati
Sent: Friday, November 19, 2004 1:41 AM
To: watermarking@watermarkingworld.org
Subject: [WM]: Watermark is a pseudo random string why??

I have seen many papers considering the watermark as a pseudo random Why so?? why not any data??

Thanks,
Bharath




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