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1. Ontology proposal: Image regions

1.1. What for

Currently we don't have a way to describe a link between certain parts of an image, and another concept. We have at best nie:relatedTo, which is very generic. Associating a concept would be useful in several situations :

This concept is already present at least on Facebook and Flickr, so the miners synchronizing data with these sites could take advantage of such an ontology.

1.2. Proposed solution

I want to create a new ontology for image region. I assign for now the prefix mir to this ontology.

1.2.1. Proposed classes

mir:Region a rdfs:Class
    rdfs:subClassOf rdfs:Resource
    rdfs:label "Image region"
    rdfs:comment "A region in an image"

mir:Boundary a rdfs:Class
    rdfs:subClassOf rdfs:Resource
    rdfs:label "Boundary"
    rdfs:comment "A boundary for an image region"

mir:Rectangle a rdfs:Class
    rdfs:subClassOf mir:Boundary
    rdfs:label "Rectangle"
    rdfs:comment "A rectangular boundary"

mir:Polygon a rdfs:Class
    rdfs:subClassOf mir:Boudary
    rdfs:label "Polygon"
    rdfs:comment "A polygonal boundary"

mir:Circle a rdfs:Class
    rdfs:subClassOf mir:Boundary
    rdfs:label "Circle"
    rdfs:comment "A circular boundary"

mir:Point a rdfs:Class
    rdfs:subClassOf rdfs:Resource
    rdfs:label "Point"
    rdfs:comment "A point in an image"

1.2.2. Proposed properties

# We use rdfs:label for labelling regions, or maybe nie:title

mir:describes a rdf:Property
    rdfs:label "Describes"
    rdfs:comment "The concept described by the region"
    rdfs:range rdfs:Resource
    rdfs:domain mir:Region

mir:boundary a rdf:Property
    rdfs:label "Boundary"
    rdfs:comment "The boundary of the region"
    rdfs:range mir:Boundary
    rdfs:domain mir:Region

mir:topLeft a rdf:Property
    rdfs:label "Top left"
    rdfs:comment "Top left corner of a rectangle"
    rdfs:range mir:Point
    rdfs:domain mir:Rectangle

mir:width a rdf:Property
    rdfs:label "Width"
    rdfs:comment "The width of a rectangle, in pixels"
    rdfs:range xsd:integer
    rdfs:domain mir:Rectangle

mir:height a rdf:Property
    rdfs:label "Height"
    rdfs:comment "The height of a rectangle, in pixels"
    rdfs:range xsd:integer
    rdfs:domain mir:Rectangle

# This is not very RDFish... But RDF lists are a pain
# Or we could make the predicate multi valued with range mir:Point, and compute the convex envelope or all the mir:Point ?
mir:points a rdf:Property
    rdfs:label "Points"
    rdfs:comment "The points of a polygon, under the form (x1,y1),(x2,y2),...,(xn,yn)"
    rdfs:range xsd:string
    rdfs:domain mir:Polygon

mir:center a rdf:Property
    rdfs:label "Center"
    rdfs:comment "The center of a circle"
    rdfs:range mir:Point
    rdfs:domain mir:Circle

mir:radius a rdf:Property
    rdfs:label "Radius"
    rdfs:comment "The radius of a circle"
    rdfs:range xsd:double
    rdfs:domain mir:Circle

mir:left a rdf:Property
    rdfs:label "Left"
    rdfs:comment "The number of pixels from the left border of the image to the point"
    rdfs:range xsd:integer
    rdfs:domain mir:Point

mir:top a rdf:Property
    rdfs:label "Top"
    rdfs:comment "The number of pixels from the top border of the image to the point"
    rdfs:range xsd:integer
    rdfs:domain mir:Point

2024-10-23 10:59