Hmm. That would DOUBLE the triples. I'd better make it optional.
http://is.gd/QLqhrN
Otherwise it might be considered silly.
John Goodwin wrote:
This is very useful Chris, however I think it would also be useful to relate
pixels by spatial predicates. We could probably build on the OS spatial
relations ontology to create orientation predicates, e.g.:
directlyLeftOf subPropertyOf sr:touches
directlyLeftOf subPropertyOf leftOf
pixel1 directlyLeftOf pixel2
etc..
John
________________________________
From: Christopher Gutteridge [mailto:c...@ecs.soton.ac.uk]
Sent: Fri 4/1/2011 10:29
To: Richard Cyganiak
Cc: John Goodwin; Sergio Fernández; Linked Data community
Subject: Re: [ANN] Linked Open Colors
Suggested future work:
* Relate each colour to a brightness, hue and saturation URI. Maybe also link
to RDF documents for the combinations of b+h, n+s and h+s so people can see
variants of saturation, brightness and hue.
* Link to the complimentary colour (inverse)
* Link to the harmonious colours
* Link to the nearest 'web safe' colour.
* Give all colours a label, even if it's just the label for the nearest web
safe color. If http://linkedopencolors.appspot.com/color/rgb/85a3ce.rdf said
'light blue' somewhere it would have far more utility.
* Define some useful predicates; for example to relate an image to the major
colour(s) used within it.
* provide a .png as well as .rdf and .html so people can link to a swatch of
the colour.
* provide a recommended way to indicate transparency (which is possibly
separate from colour?) Perhaps also other properties like reflectivity etc.
Anyhow, I've knocked up a quick image-to-RDF service;
http://graphite.ecs.soton.ac.uk/img2rdf/
Example output: http://is.gd/3h0Ais
I've limited it to 10K pixels for now. Code available on request.
Richard Cyganiak wrote:
On 1 Apr 2011, at 13:32, John Goodwin wrote:
Thank you for this - very useful. Also very timely as OS are about to release all raster mapping products in RDF.
That's about time! I want to use SPARQL CONSTRUCT for image processing.
Best,
Richard
John
-----Original Message-----
From: public-lod-requ...@w3.org on behalf of Sergio Fernández
Sent: Fri 4/1/2011 08:45
To: Linked Data community
Subject: [ANN] Linked Open Colors
Hi,
for giving some color to the semantic web folks, we are happy to
announce the release the "Linked Open Colors" dataset [1]. The
Linked
Open Colors project offers tons of facts about colors, all
readily
available as Linked Open Data, linking with other relevant
datasets
such as dbpedia.
The dataset and its publication mechanisms have been
pedantically
checked, and we expect no errors in the triples; if you do find
some,
please let us know.
This project is highly inspired by Linked Open Numbers project
[2].
Happy April Fools' Day!
Cheers,
[1] http://purl.org/colors <https://spitfire.ordnancesurvey.co.uk/,DanaInfo=purl.org+colors>
[2] http://km.aifb.kit.edu/projects/numbers/ <https://spitfire.ordnancesurvey.co.uk/projects/numbers/,DanaInfo=km.aifb.kit.edu+>
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