Proposal to add the terms ac:RegionOfInterest and related terms

[baskaufs]

This proposal is the result of an extended discussion by the Maintenance Group about developing a system to define and demarcate portions of a media item. For details, see the meeting notes. For examples of how to use the new terms, see the Regions of Interest (ROI) Recipes document.

Preamble

Because basic TDWG vocabularies do not include properties that generate machine-reasoned entailments, the metadata for ac:hasROI and ac:isROIOf do not include owl:inverseOf statements. However, because ac:hasROI and ac:isROIOf are inverse properties, when a statement has been made that a media item includes a particular region of interest, a user can safely assert that the region of interest is located within the media item and vice versa.

Proposed terms

Term name: ac:RegionOfInterest
Type: rdfs:Class
Label: Region of Interest Class
Definition: A designated region of a media item bounded in dimensions appropriate for the media type.
Notes: Dimensions may include spatial, temporal, or frequency bounds.

Term name: ac:hasROI
Type: rdf:Property
Label: Has Region of Interest
Definition: A region of interest located within the subject media item.
Usage: ac:hasROI is the inverse property of ac:isROIOf.
Notes: Used to link a subject media item to an object region of interest.

Term name: ac:isROIOf
Type: rdf:Property
Label: Is Region of Interest of
Definition: The media item within which a region of interest is located.
Usage: ac:isROIOf is the inverse property of ac:hasROI.
Notes: Used to link a subject region of interest to an object media item.

[baskaufs]

The public comment period has extended beyond the end of the original 30 days, which was scheduled to end on July 23rd. Since it appears based on #207 (comment) that there aren't actually any objections to the proposals included in https://github.com/tdwg/ac/milestone/4, I'm ending the public comment period now.

[baskaufs]

Changed proposal to fix incorrect capitalization of "rdf:Property".

[baskaufs]

Ratified by the Executive on 2021-10-05 and implemented in tdwg/rs.tdwg.org#79 and #212