You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@httpd.apache.org by Carl <ap...@hotmail.com> on 2003/03/04 03:37:25 UTC
Re: [users@httpd] Handler for images in a directory - watermark the image
I have heard recently that there were ways to "watermark" your images that
supposedly still appear even when printed. DAmn, I cannot remember or find
(just now) the reference to it. Had to do with a person displaying his
photographs/artwork and not wanting it to be used elsewhere (at least w/o
attribution). Actually, now that I think more about it it was related to my
apache research. So maybe on the apache news/letter site? The first part
of it had to do with refusing to serve up an image if the request came from
another web site (not yours). Then the watermarking was mentioned. Sorry
to run on here, but if I find the reference I'll be pack and post it.
-carl
----- Original Message -----
From: "Chris Taylor" <ch...@x-bb.org>
To: <us...@httpd.apache.org>
Sent: Monday, March 03, 2003 3:57 PM
Subject: Re: [users@httpd] Handler for images in a directory.
> Either way, you'll end up displaying the image.......
>
> Print screen
> Photoshop
> Paste
> Save :)
>
> You can't avoid it, people will ALWAYS find a way around, there's nothing
to
> stop them passing your CGI URL to a download manager either.....getting it
> that way. It's an impossible task, and (as Jeff pointed out) a bit
pointless
> too :)
>
> Chris Taylor - chris@x-bb.org - The guy with the PS2 WebServer -
> http://www.x-bb.org/chris.asc
>
> ----- Original Message -----
> From: "Chris Meadors" <cl...@hereintown.net>
> To: <us...@httpd.apache.org>
> Sent: Tuesday, March 04, 2003 12:04 AM
> Subject: [users@httpd] Handler for images in a directory.
>
>
> > I was helping a guy with a site who has about 400 images in one
> > directory. He already has links that tigger a pop-up window that
> > displays each of the images from various locations on his site. The
> > Javascrip pop-up hides the menu bar, tool buttons, and address bar. But
> > he was worried that people could still easily see the location in the
> > title bar of the window, and they could right click the image to save
> > it. (I know these are all just little things, and if an image is
> > servered it can be saved, but he would make him happy to stop the right
> > clicks.)
> >
> > So I added a handler that calls a CGI script to wrap the image in HTML
> > with a simple title and some more Java script to disable to right
clicks.
> >
> > The program is, this wrapper has still has to load the image. Sure I
> > can get the REQUEST_URL, but if I just set that as the img src, it'll
> > just trigger the handler again.
> >
> > So I whipped up a second CGI scipt that can be passed a URI and will
> > fetch the file off the drive directly, and basicly cat it with the right
> > Content-type header.
> >
> > This was just a 5 minute thought that I threw together. I was wondering
> > if anyone has any pointers to other ways this has been done?
> >
> > Thanks.
> >
> > --
> > Chris
> >
> >
> > ---------------------------------------------------------------------
> > The official User-To-User support forum of the Apache HTTP Server
Project.
> > See <URL:http://httpd.apache.org/userslist.html> for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
> >
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: [users@httpd] Handler for images in a directory - watermark the
image
Posted by Trevor Hurst <tr...@sgi.com>.
There was an article in (I think) Dr. Dobbs about that 8 months
or so ago. Regarding Digital Watermarking and fingerprinting.
-- Trev
Carl wrote:
>
> I have heard recently that there were ways to "watermark" your images that
> supposedly still appear even when printed. DAmn, I cannot remember or find
> (just now) the reference to it. Had to do with a person displaying his
> photographs/artwork and not wanting it to be used elsewhere (at least w/o
> attribution). Actually, now that I think more about it it was related to my
> apache research. So maybe on the apache news/letter site? The first part
> of it had to do with refusing to serve up an image if the request came from
> another web site (not yours). Then the watermarking was mentioned. Sorry
> to run on here, but if I find the reference I'll be pack and post it.
> -carl
>
> ----- Original Message -----
> From: "Chris Taylor" <ch...@x-bb.org>
> To: <us...@httpd.apache.org>
> Sent: Monday, March 03, 2003 3:57 PM
> Subject: Re: [users@httpd] Handler for images in a directory.
>
> > Either way, you'll end up displaying the image.......
> >
> > Print screen
> > Photoshop
> > Paste
> > Save :)
> >
> > You can't avoid it, people will ALWAYS find a way around, there's nothing
> to
> > stop them passing your CGI URL to a download manager either.....getting it
> > that way. It's an impossible task, and (as Jeff pointed out) a bit
> pointless
> > too :)
> >
> > Chris Taylor - chris@x-bb.org - The guy with the PS2 WebServer -
> > http://www.x-bb.org/chris.asc
> >
> > ----- Original Message -----
> > From: "Chris Meadors" <cl...@hereintown.net>
> > To: <us...@httpd.apache.org>
> > Sent: Tuesday, March 04, 2003 12:04 AM
> > Subject: [users@httpd] Handler for images in a directory.
> >
> >
> > > I was helping a guy with a site who has about 400 images in one
> > > directory. He already has links that tigger a pop-up window that
> > > displays each of the images from various locations on his site. The
> > > Javascrip pop-up hides the menu bar, tool buttons, and address bar. But
> > > he was worried that people could still easily see the location in the
> > > title bar of the window, and they could right click the image to save
> > > it. (I know these are all just little things, and if an image is
> > > servered it can be saved, but he would make him happy to stop the right
> > > clicks.)
> > >
> > > So I added a handler that calls a CGI script to wrap the image in HTML
> > > with a simple title and some more Java script to disable to right
> clicks.
> > >
> > > The program is, this wrapper has still has to load the image. Sure I
> > > can get the REQUEST_URL, but if I just set that as the img src, it'll
> > > just trigger the handler again.
> > >
> > > So I whipped up a second CGI scipt that can be passed a URI and will
> > > fetch the file off the drive directly, and basicly cat it with the right
> > > Content-type header.
> > >
> > > This was just a 5 minute thought that I threw together. I was wondering
> > > if anyone has any pointers to other ways this has been done?
> > >
> > > Thanks.
> > >
> > > --
> > > Chris
> > >
> > >
> > > ---------------------------------------------------------------------
> > > The official User-To-User support forum of the Apache HTTP Server
> Project.
> > > See <URL:http://httpd.apache.org/userslist.html> for more info.
> > > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > > For additional commands, e-mail: users-help@httpd.apache.org
> > >
> >
> >
> > ---------------------------------------------------------------------
> > The official User-To-User support forum of the Apache HTTP Server Project.
> > See <URL:http://httpd.apache.org/userslist.html> for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
> >
> >
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org