Eugene Leitl <[EMAIL PROTECTED]> writes:
> Well, the deformations must be smooth, so this just describes an
> attack against a certain type of watermarks.
Yes. They found that there was one watermarking product on the market
that was not defeated by their standard mechanism, and developed a ne
Working for Xerox I can assure you that all of our colour machines together
with all our competitors colour machines leave a "trace".
Pointer to how this trace is applied, recorded, accounted for,
and handled when components are swapped out?
--dan
--Original Message-
From: bram [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 17, 2000 8:20 AM
To: Eugene Leitl
Cc: [EMAIL PROTECTED]
Subject: Re: Blue Spike and Digital Watermarking with Giovanni
On Sat, 15 Jan 2000, Eugene Leitl wrote:
> Joe Sixpack also doesn't believe that color l
Well, the deformations must be smooth, so this just describes an
attack against a certain type of watermarks.
As I said, it is difficult to resiliently watermark a single image.
Paul Crowley writes:
> As far as I know, all fielded watermarking schemes can be defeated
> with simple, invisible
On Sat, 15 Jan 2000, Eugene Leitl wrote:
> Joe Sixpack also doesn't believe that color laser copiers leave an
> unique signature on each copy, allowing you to trace the copy to an
> individual device. Nevertheless these are there, and can be evaluated
> if need arises. (Just try distributing a fe
Once comment regarding Napster. After downloading Napster and
installing it to determine what it does, I discovered that it ignores
the user's desires and will export all the music files on their
machine even when they request that no music be exported.
This is behind the back the end user, and
As far as I know, all fielded watermarking schemes can be defeated
with simple, invisible distortions of the image - see
http://www.cl.cam.ac.uk/~fapp2/steganography/
for work done by Fabien Petitcolas and Ross Anderson. You don't even
have to have more than one copy of the picture or know very
Hi Eugene,
There are many parts of your recent comments which I disagree with, as
much as I understand them. Some of what you write isn't really clear
to me, and I don't feel like debating each point in detail.
However, here are a two points of clarification, regarding "Napster"
and my definiti
Robin Whittle writes:
> Digital watermarks again!
>
> Joe Sixpack won't believe his file contains a digital watermark with
> his name in it unless there is a freely distributed Windows/Mac
> program which reads the watermark and so spits out his name and other
> personal details.
Joe Six
> What use is the watermark anyway? It is only applicable to files
> generated for a specific, legally identifiable customer. Therefore it
> does not apply to pre-pressed CD/DVD etc. discs or to broadcasts via
> the Net, TV, radio etc.
Well, serial numbers are somewhat useful in tracking pirate
Digital watermarks again!
Joe Sixpack won't believe his file contains a digital watermark with
his name in it unless there is a freely distributed Windows/Mac
program which reads the watermark and so spits out his name and other
personal details.
That being the case, it is only a matter of time
[EMAIL PROTECTED] (Sat 01/15/00 at 06:06 PM -0800):
> > arguments can be made for why you don't need to get that many texts
> > even given no knowledge of the watermark system. I'll post more if
> > pushed --PM]
>
> Please do, this sounds interesting.
ditto.
> > [Joe Sixpack has nothing t
12 matches
Mail list logo
