[TagCommons-WG] Async ESP game - collaborative photo tagging for JeromeDL

[Richard Newman]

(Working through my email backlog from oldest to newest; apologies if  
someone else has already answered this satisfactorily.)

On  29 May 2007, at 11:28 PM, Sebastian Kruk wrote:

> I have identified, however, two issues we will need
> to address by extending the generic tagging ontology:
>    * support for regions-of-interest - so that we can tag a part of
> an object, but the tagging can be inferred on the whole object

The best solution I can think of for this is to identify part of the  
object (with a URI, as I show here, or with a blank node), and tag  
that. Informally, in RDF:

# joeInPicture is the region depicting some chap named Joe  
in :somePicture.
:joeInPicture tag:...     # tagging info goes here.
:joeInPicture :partOf :somePicture .

# more detailed relationship to the picture...
:joeInPicture :pictureRole [
   :x 40 ; :y 140 ; :width 350 ; ... # describe the polygon, or a  
bounding box.
   :picture :somePicture             # relate it to the picture.
]

Then you can, if you wish all tags for parts of the picture to apply  
to the whole, say that:

x :partOf y
x tag:tag z
=>
y tag:tag z

... better yet, though, you'd search for regions' tags when  
retrieving tags for an image.

Does that make sense?

-R