RE: [WM]: is this scheme a blind one? can anyone help me?

["Bloom Jeffrey" <Jeffrey.Bloom@thomson.net>]

This fits into a large category of watermark detection approaches that do not use the original for detection, but do use information
about embedding.  This is informed detection not blind detection.  Some would call it "semi-blind", but this term has not been well
defined and distinguished from "informed".  A detection approach that requires information about the original or about the embedding
is an informed detection approach.  Techniques that can recover the watermark data without any information about the original or the
embedding are blind detection techniques.

-----------------------------------------------------
Jeffrey A Bloom, Content Security Research Group Thomson Corporate Research, Princeton, NJ, USA
(609) 987-7727, (609) 987-7299 fax


> -----Original Message-----
> From: watermarking-owner@watermarkingworld.org [mailto:watermarking-
>owner@watermarkingworld.org] On Behalf Of wjz0796@sjtu.edu.cn
> Sent: Wednesday, February 22, 2006 8:53 AM
> To: watermarking@watermarkingworld.org
> Subject: [WM]: is this scheme a blind one? can anyone help me?
> 
> Hi,every one, i am confused about the principle of the blind
watermarking
> shceme. the following is my proposed watermarking scheme, i don't know
> whether it can be called as blind watermark.  The rough embedding
> steps are as follows: original image is splitted into
> 8*8 blocks and the fitness of embeding watermark for each block is
learned
> by smart theory. Then, in the canditate embeding blocks, a key is used
> to choose blocks to be embeded and the positions for all these choosed
> blocks are recorded . Then watermark is embeded. During detection,
> original image is not used ,but the recored position is need to know
> the watermark embeding position. can this method be called as blind
> watermarking scheme? The only
difference
> with classical blind watermarking scheme is it need to record the
> embed position ,and it depends on the image content and
key,
> while the classical scheme only use a key to generate the
> embed position.   thank you !


______________________________________________________________________________

Watermarking Mailing List - http://www.watermarkingworld.org/ml.html
To unsubscribe send email to "majordomo@watermarkingworld.org" with
"unsubscribe watermarking YOURMAIL" in the body.
______________________________________________________________________________