Re: [Savannah-hackers] copyright, png and pngcrush

[address@hidden]

> le mer 07-11-2001 à 18:14, Loic Dachary a écrit :
> > address@hidden writes:
> >  > Hi!
> >  >
> >  > This is a second mail about the new project
cardpics, and
> >  > about how to add a copyright notice inside an
image.
> >  >
> >  > Gui found a soft, called pngcrush
> >  > (http://pmt.sourceforge.net/pngcrush/) that allow
to
> >  > write a lot of stuff inside a png image, including:
> >  > - title
> >  > - comments
> >  > - copyright
> >  >
> >  > We will use those, so no problem with licence and
> >  > copyright protection!
> >
> >     Great. I'd be very interested if you could write
a few lines to
> > summarize all this. Half a page with pointers, even
if not well written
> > will be tremendously useful. Namely I'd like to have
a reference text that
> > says:
> >
> >     - how to print the comment/copyright with jpg /
pngcrush'd images
> >     - how to edit the comment/copyright
> >
> >     Namely I'd like to make sure the
> >
> >     http://savannah.gnu.org/images/floating.jpg (and
the original one
> > too)
> >
> >     has a proper copyright notice (supposed to be GNU
GPL). AFAIK
> > they don't which is bad.
> >
> >     Thanks for exploring this.
>
> Hi,
>
> I don't speak english very well but I attempt to
explain you how to
> print the comment/copyright in png image with pngcrush.
> The command line for add comment with pngcrush is :
> pngcrush -force -text b "keyword" "text"
image_without_copyright.png \
> image_with_copyright.png
>
> For example, to add copyright in my png image, I do
that :
> $ pngcrush -force -text b "Author" "Guillaume Weexsteen
> <address@hidden>" -text b "Copyright" "2001
Guillaume Weexsteen" \
>  -text b "Licence" "Those cards are under licence GPL
v2 or later." \
> image.png image_with_copyright.png
>
> Comment is in ASCII and you can read or edit it with a
text editor or a
> binary file editor.
>
> I don't know how to do with jpg image.
>
> --
> Guillaume
>
>

For the jpg image, just use The Gimp, and after you chose
the file name to save the file under, you get a new box
asking various parameterers (including the quality of the
jpeg image) and one is the comment.

I'll make an html page with all this, and I will put it
on the home site of the cardpics project.

Yves
--
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