Region Selector

• CURIE: gmeow:RegionSelector
• IRI: https://blackcatinformatics.ca/gmeow/RegionSelector
• Category: class
• Defined by: gmeow:slices/images
• Box roles: TBox role (What is this?)

The encoding descriptor for an image region — carries the selector type (a gmeow:SelectorType value) and the raw selector value (SVG path, pixel coordinates, mask data, RLE string, etc.). The canonical superset of W3C Web Annotation selectors, IIIF selectors, and domain-specific mask formats.

Structure

Subclass of: gmeow:InformationObject

Practical Pattern

Use gmeow:RegionSelector as a specialized kind of gmeow:InformationObject. Add statement metadata or a standpoint when the assertion needs provenance, confidence, or vantage.

Example Snippets

These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.

Photo Metadata

• Source: slices/extensions/images/examples/photo-metadata.ttl
• Examples catalog: open in catalog#example-slices-extensions-images-examples-photo-metadata

# SPDX-FileCopyrightText: 2026 Blackcat Informatics® Inc. <paudley@blackcatinformatics.ca>
# SPDX-License-Identifier: CC-BY-4.0
#
# Worked example: image metadata at three layers. EXIF technical tags
# (gmeow:hasExifTag) record how the bytes were captured. A gmeow:ImageRegion with
# a typed gmeow:RegionSelector pins WHERE something is in the frame (a fractional
# bounding box). And a gmeow:DepictionUsage makes "this image depicts X" a
# PERSPECTIVAL act, not a bare fact: it records the subject, the context (candid /
# portrait / childhood …), and WHOSE authority asserts the depiction — so the same
# photo can be a "family" depiction to one audience and a "work" depiction to
# another, without either being privileged.
@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex:    <https://blackcatinformatics.ca/gmeow/examples/images/> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .

ex:bbox a gmeow:RegionSelector ;
    gmeow:selectorType  gmeow:selectorTypeFractionalRectangle ;
    gmeow:selectorValue "0.30,0.20,0.18,0.24" .

Common Companion Terms

gmeow:InformationObject

External Equivalences

Equivalent or closely aligned targets: oa

Linkages

Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.

Term Equivalences