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RE: [ANN] Linked Open Colors

From: John Goodwin <John.Goodwin@ordnancesurvey.co.uk>
Date: Fri, 1 Apr 2011 10:33:47 +0100
Message-ID: <9687A8495B652940BB4F5D625F4050FD30EE96@OS2K197.ordsvy.gov.uk>
To: "Christopher Gutteridge" <cjg@ecs.soton.ac.uk>, "Richard Cyganiak" <richard@cyganiak.de>
Cc: Sergio Fernández <sergio.fernandez@fundacionctic.org>, "Linked Data community" <public-lod@w3.org>
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:cjg@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-request@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+> 
		
		-- 
		Carlos Tejo, Iván Mínguez and Sergio Fernández
		
		
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-- 
Christopher Gutteridge -- http://id.ecs.soton.ac.uk/person/1248 <https://spitfire.ordnancesurvey.co.uk/person/,DanaInfo=id.ecs.soton.ac.uk+1248> 

You should read the ECS Web Team blog: http://blogs.ecs.soton.ac.uk/webteam/ <https://spitfire.ordnancesurvey.co.uk/webteam/,DanaInfo=blogs.ecs.soton.ac.uk+> 
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Thank you for your cooperation.

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Received on Friday, 1 April 2011 09:37:10 UTC

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