🚀 go-pugleaf

"Vizros Plug-ins" <vizrosplugins@yahoo.com> wrote in message
news:2f6e65c4.0406061515.7dda9fb1@posting.google.com...
> How can I add a watermark (name, signature, marker...) to an image
> without changing its appearance? Or at least the change should not be
> detectable to human eyes? I read too many toturials that show you how
> to put a hard tag on the image. Those kind of stuff is totally useless
> because it destorys the image at the same time.
>
> Tony G. Smith
> Vizros - Realistic 3D page curl plug-ins and more
> Demo at http://www.vizros.com/gallery.html

Just curious> If you add an undetectable watermark won't that defeat the
purpose of actually adding one? If you can't see the watermark how do you
know it's there?

In article <bENwc.15847$Yd3.1770@newsread3.news.atl.earthlink.net>,
"Brooklyn NYC" <brooklyn@newyorkcity.com> wrote:

> "Vizros Plug-ins" <vizrosplugins@yahoo.com> wrote in message
> news:2f6e65c4.0406061515.7dda9fb1@posting.google.com...
> > How can I add a watermark (name, signature, marker...) to an image
> > without changing its appearance? Or at least the change should not be
> > detectable to human eyes? I read too many toturials that show you how
> > to put a hard tag on the image. Those kind of stuff is totally useless
> > because it destorys the image at the same time.
> >
> > Tony G. Smith
> > Vizros - Realistic 3D page curl plug-ins and more
> > Demo at http://www.vizros.com/gallery.html
> 
> Just curious> If you add an undetectable watermark won't that defeat the
> purpose of actually adding one? If you can't see the watermark how do you
> know it's there?

You can see it fyou dump the file in a hex-editor. Sometimes a simple text
editor will do. The purpose is rather after the fact to help demonstrate
origin. I posted some time ago the two ways Photoshop creates and retains
such information, and the one in which it does not. I cannot speak for CS.

http://www.kellyswebcreations.com/transtexttutkwc.html

I found one here to make an easy water mark...you can change the size of
your watermark

Feel free to join my Yahoo group for new stuff and info
http://groups.yahoo.com/group/paintshoprus/

Samantha

"jjs" <john@xyzzy.stafford.net> wrote in message
news:john-0606041826110001@m-0-135.docsis.hbci.com...
> In article <bENwc.15847$Yd3.1770@newsread3.news.atl.earthlink.net>,
> "Brooklyn NYC" <brooklyn@newyorkcity.com> wrote:
>
> > "Vizros Plug-ins" <vizrosplugins@yahoo.com> wrote in message
> > news:2f6e65c4.0406061515.7dda9fb1@posting.google.com...
> > > How can I add a watermark (name, signature, marker...) to an image
> > > without changing its appearance? Or at least the change should not be
> > > detectable to human eyes? I read too many toturials that show you how
> > > to put a hard tag on the image. Those kind of stuff is totally useless
> > > because it destorys the image at the same time.
> > >
> > > Tony G. Smith
> > > Vizros - Realistic 3D page curl plug-ins and more
> > > Demo at http://www.vizros.com/gallery.html
> >
> > Just curious> If you add an undetectable watermark won't that defeat the
> > purpose of actually adding one? If you can't see the watermark how do
you
> > know it's there?
>
> You can see it fyou dump the file in a hex-editor. Sometimes a simple text
> editor will do. The purpose is rather after the fact to help demonstrate
> origin. I posted some time ago the two ways Photoshop creates and retains
> such information, and the one in which it does not. I cannot speak for CS.

Gotcha. Thanks for the info.

Vizros Plug-ins wrote:
> How can I add a watermark (name, signature, marker...) to an image
> without changing its appearance? Or at least the change should
> not be detectable to human eyes? I read too many toturials that
> show you how to put a hard tag on the image. Those kind of stuff
> is totally useless because it destorys the image at the same time.

See Help > Index > Watermark Information
-- 
Fred Hiltz,  fhiltz at yahoo dot com

Brooklyn NYC wrote:
> Just curious> If you add an undetectable watermark won't that defeat the
> purpose of actually adding one? If you can't see the watermark how do you
> know it's there?
> 

Using Digimarc watermarking is one application of an invisible watermark 
that is traceable. Digimarc say the following about their watermark 
technology.

> Individuals: If you display your personal image portfolio online, use
> MyPictureMarc to communicate your copyright ownership and track your
> images on the Internet. You�ll limit unlicensed use and receive
> information to help recover otherwise lost revenue.

See http://www.digimarc.com/solutions/digitalimagery/default.asp

Not only can you determine who was the original author, the technology 
will alert the copyright holder when his/her image appears on the 
internet. Of course this service costs money.

JP

On 6 Jun 2004 16:15:39 -0700, vizrosplugins@yahoo.com (Vizros
Plug-ins) reverently intoned upon the aether:

> How can I add a watermark (name, signature, marker...) to an image
> without changing its appearance? Or at least the change should not be
> detectable to human eyes? I read too many toturials that show you how
> to put a hard tag on the image. Those kind of stuff is totally useless
> because it destorys the image at the same time.
> 
> Tony G. Smith
> Vizros - Realistic 3D page curl plug-ins and more
> Demo at http://www.vizros.com/gallery.html

Take the word "steganography" and go from there.  

enjoy,

Sean


"In the End, we will remember not the words of our enemies,
 but the silence of our friends." 

- Martin Luther King Jr. (1929-1968) 

Photo Archive @ http://www.tearnet.com/Sean

Vizros Plug-ins wrote:
> How can I add a watermark (name, signature, marker...) to an image
> without changing its appearance? Or at least the change should not be
> detectable to human eyes? I read too many toturials that show you how
> to put a hard tag on the image. Those kind of stuff is totally useless
> because it destorys the image at the same time.

If someone heavily edits or (especially) highly recompresses your image in
Jpeg, any watermark will be destroyed.

Cheers,
Nicholas Sherlock