EXIF metadata

I'm new to this list, so hi you all!

I've searched the wiki for an EXIF metadata specification
but I
haven't found any. Do you have any standard way of embeding
CC
licenses in EXIF metadata?

There is a "Copyright" field which could be used
to embed the CC
license. Any comments about this?

I'm interested in this because I'm planning to write a
patch for EOG
(Gnome's image view program) to support CC licenses. At the
moment,
I've only found an image metadata specification for SVG
(and possibly
EXIF). Is there any other image format which supports
embedded CC
licenses?

Thanks.
-- 
Jaime Frutos Morales
Systems Engineer
Blog: http://textoplano.l
ivejournal.com
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One of the http://wiki.creativecommons.org/Summer_of_Code_2006_
Projects
is addressing EXIF, though I haven't seen the code yet...

On Mon, 2006-07-31 at 00:28 +0200, Jaime Frutos Morales
wrote:
> I'm new to this list, so hi you all!
> 
> I've searched the wiki for an EXIF metadata
specification but I
> haven't found any. Do you have any standard way of
embeding CC
> licenses in EXIF metadata?
> 
> There is a "Copyright" field which could be
used to embed the CC
> license. Any comments about this?
> 
> I'm interested in this because I'm planning to write
a patch for EOG
> (Gnome's image view program) to support CC licenses.
At the moment,
> I've only found an image metadata specification for
SVG (and possibly
> EXIF). Is there any other image format which supports
embedded CC
> licenses?
> 
> Thanks.
-- 
  
http://wiki.creativecommons.org/User:Mike_Linksvayer

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cc-metadata mailing list
metadatacreativecommons.org
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On Sun, 2006-07-30 at 19:35 -0700, Mike Linksvayer wrote:
> One of the http://wiki.creativecommons.org/Summer_of_Code_2006_
Projects
> is addressing EXIF, though I haven't seen the code
yet...

I created a page for those interested in getting and putting
metadata
into the filetypes which use Exif:

http://wiki.crea
tivecommons.org/Exif

There are a gazillion tags
(http://www.sno.phy.queensu.ca/~phil/exiftool/Tag
Names/index.html) for
Exif metadata, so we need to pick a solid approach for
pushing Exif
support to the 30 file formats that allow one to use Exif
metadata.

After looking at the file list, one can see that support for
Exif is
pretty major (more than id3) and there are tools, like
exiftool
(http://w
ww.sno.phy.queensu.ca/~phil/exiftool) which allow people
to
embed and retrieve Exif metadata in quicktime, mp4, tiff,
etc.

It looks like there are a several tag types with the basic
Exif types
and then extended sets such as XMP. I think we should
promote both using
the standard and XMP metadata types.

I think the best way to support Exif metadata is to use the
XMP:cc and
XMP:dc (dublin core) tags to support metadata in a similar
way as we do
with XML. What do you all think?

Also, I think supporting the standard Exif metadata tag
"Copyright",
which is a string would be important as well: 

    0x8298 Copyright string IFD0

And possibly the Comment type as well:

    0x9286 UserComment undef ExifIFD

And, optionally, maybe we should promote adding the
nonstandard XP
fields so that this metadata is available in Windows XP and
greater: 

0x9c9b XPTitle undef IFD0 (tags 0x9c9b-0x9c9f are used by
Windows
Explorer; special characters in these values are converted
to UTF-8 by
default, or Windows Latin1 with the -L option. XPTitle is
ignored by
Windows Explorer if ImageDescription exists) 

0x9c9c XPComment undef IFD0   

0x9c9d XPAuthor undef IFD0 (ignored by Windows Explorer if
Artist
exists) 

0x9c9e XPKeywords undef IFD0   

0x9c9f XPSubject undef IFD0



Thoughts?

I'm also cc'ing Hubert Figuiere, who has worked on this
filetype
extensively. Hubert, could you help us find out the best way
to embed
licensing using Exif? These resource might exist, but
hopefully you can
help us find them.

Jon

> On Mon, 2006-07-31 at 00:28 +0200, Jaime Frutos Morales
wrote:
> > I'm new to this list, so hi you all!
> > 
> > I've searched the wiki for an EXIF metadata
specification but I
> > haven't found any. Do you have any standard way
of embeding CC
> > licenses in EXIF metadata?
> > 
> > There is a "Copyright" field which
could be used to embed the CC
> > license. Any comments about this?
> > 
> > I'm interested in this because I'm planning to
write a patch for EOG
> > (Gnome's image view program) to support CC
licenses. At the moment,
> > I've only found an image metadata specification
for SVG (and possibly
> > EXIF). Is there any other image format which
supports embedded CC
> > licenses?
> > 
> > Thanks.
-- 
Jon Phillips

San Francisco, CA
USA PH 510.499.0894
jonrejon.org
http://www.rejon.org

MSN, AIM, Yahoo Chat: kidproto
Jabber Chat: rejongristle.org
IRC: rejonirc.freenode.net

Inkscape (http://inkscape.org)
Open Clip Art Library (www.openclipart.org)
Creative Commons (www.creativecommons.org)
San Francisco Art Institute (www.sfai.edu)

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Jon and everyone else involved,
I'm very excited about CC EXIF. I've set up cc-sharp
(http://wiki.
creativecommons.org/cc-sharp) in a way that a file path,
license URL, and metadata URL can be passed to the library
and it will
verify the license claim. This way programs like f-spot
(http://f-spot.org/) will
be able to verify license claims with the
exact same code that Banshee (http://www.banshee-pr
oject.org/) uses to
verify mp3s. As of now it looks like all your suggestions,
Jon, can be
narrowed down to a 3 part "file, license URL, and
metadata URL"
verification process and I'm just wondering if a standard
file-type-less verification algorithm (api) exists or if we
can set
one up?

-Luke

On 8/8/06, Jon Phillips <jonrejon.org> wrote:
> On Sun, 2006-07-30 at 19:35 -0700, Mike Linksvayer
wrote:
> > One of the http://wiki.creativecommons.org/Summer_of_Code_2006_
Projects
> > is addressing EXIF, though I haven't seen the
code yet...
>
> I created a page for those interested in getting and
putting metadata
> into the filetypes which use Exif:
>
> http://wiki.crea
tivecommons.org/Exif
>
> There are a gazillion tags
> (http://www.sno.phy.queensu.ca/~phil/exiftool/Tag
Names/index.html) for
> Exif metadata, so we need to pick a solid approach for
pushing Exif
> support to the 30 file formats that allow one to use
Exif metadata.
>
> After looking at the file list, one can see that
support for Exif is
> pretty major (more than id3) and there are tools, like
exiftool
> (http://w
ww.sno.phy.queensu.ca/~phil/exiftool) which allow people
to
> embed and retrieve Exif metadata in quicktime, mp4,
tiff, etc.
>
> It looks like there are a several tag types with the
basic Exif types
> and then extended sets such as XMP. I think we should
promote both using
> the standard and XMP metadata types.
>
> I think the best way to support Exif metadata is to use
the XMP:cc and
> XMP:dc (dublin core) tags to support metadata in a
similar way as we do
> with XML. What do you all think?
>
> Also, I think supporting the standard Exif metadata tag
"Copyright",
> which is a string would be important as well:
>
>     0x8298 Copyright string IFD0
>
> And possibly the Comment type as well:
>
>     0x9286 UserComment undef ExifIFD
>
> And, optionally, maybe we should promote adding the
nonstandard XP
> fields so that this metadata is available in Windows XP
and greater:
>
> 0x9c9b XPTitle undef IFD0 (tags 0x9c9b-0x9c9f are used
by Windows
> Explorer; special characters in these values are
converted to UTF-8 by
> default, or Windows Latin1 with the -L option. XPTitle
is ignored by
> Windows Explorer if ImageDescription exists)
>
> 0x9c9c XPComment undef IFD0
>
> 0x9c9d XPAuthor undef IFD0 (ignored by Windows Explorer
if Artist
> exists)
>
> 0x9c9e XPKeywords undef IFD0
>
> 0x9c9f XPSubject undef IFD0
>
>
>
> Thoughts?
>
> I'm also cc'ing Hubert Figuiere, who has worked on
this filetype
> extensively. Hubert, could you help us find out the
best way to embed
> licensing using Exif? These resource might exist, but
hopefully you can
> help us find them.
>
> Jon
>
> > On Mon, 2006-07-31 at 00:28 +0200, Jaime Frutos
Morales wrote:
> > > I'm new to this list, so hi you all!
> > >
> > > I've searched the wiki for an EXIF metadata
specification but I
> > > haven't found any. Do you have any standard
way of embeding CC
> > > licenses in EXIF metadata?
> > >
> > > There is a "Copyright" field
which could be used to embed the CC
> > > license. Any comments about this?
> > >
> > > I'm interested in this because I'm planning
to write a patch for EOG
> > > (Gnome's image view program) to support CC
licenses. At the moment,
> > > I've only found an image metadata
specification for SVG (and possibly
> > > EXIF). Is there any other image format which
supports embedded CC
> > > licenses?
> > >
> > > Thanks.
> --
> Jon Phillips
>
> San Francisco, CA
> USA PH 510.499.0894
> jonrejon.org
> http://www.rejon.org
>
> MSN, AIM, Yahoo Chat: kidproto
> Jabber Chat: rejongristle.org
> IRC: rejonirc.freenode.net
>
> Inkscape (http://inkscape.org)
> Open Clip Art Library (www.openclipart.org)
> Creative Commons (www.creativecommons.org)
> San Francisco Art Institute (www.sfai.edu)
>
> _______________________________________________
> cc-devel mailing list
> cc-devellists.ibiblio.org
> ht
tp://lists.ibiblio.org/mailman/listinfo/cc-devel
>


-- 
Luke Hoersten
http://www.openradix.org/
http://www.cs.pur
due.edu/~lhoerste/
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