Extending the GeoSPARQL ontology with support for raster data

[FransKnibbe]

Contributed by Timo Homburg for the white paper "Benefits of Representing Spatial Data using Semantic and Graph Technologies":

GeoSPARQL is currently incapable of encoding and dealing with raster data.
However, raster data is essential for many geospatial applications and supported by many of relational geospatial databases such as POSTGIS.
Raster data even provides semantics, as interpretations of raster data can be given by interpreting the color codes of raster bands.
In order to integrate raster data into GeoSPARQL the following requirements need to be fulfilled:

• Extending the GeoSPARQL ontology to include support for GridCoverages
• Extending the GeoSPARQL ontology with raster literal types such as CovJSON,GMLCOV,GeoTIFF
• Extending the GeoSPARQL ontology with vocabularies to describe raster data content

[mhogeweg]

I suggest striking the part: "... and supported by many of relational geospatial databases such as POSTGIS". Most raster data is stored as files on disk, not loaded into databases.

for the bullets, would you also need?

• Extending the GeoSPARQL ontology with vocabularies to describe basic raster operations

[situx]

Thank you for the suggestion. I added it to the ticket in the standard tracker.
Now posted as http://ogc.standardstracker.org/show_request.cgi?id=627

[situx]

Related Work on this subject: http://www.it.uu.se/research/group/udbl/publ/DSDIS2015.pdf

[jabhay]

MoSCoW poll created