Media Object

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

An image, audio, or video media file — a concrete published artifact. A specialization of gmeow:Manifestation.

Structure

Subclass of: gmeow:Manifestation

Practical Pattern

Use gmeow:MediaObject as a specialized kind of gmeow:Manifestation. 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

# --- The image. A MediaObject is a Manifestation on the WEMI spine, so it embodies
#     an Expression realizing a Work (the same backing every published artifact has).
ex:photo a gmeow:MediaObject ;
    rdfs:label       "Team portrait, June 2026"@en ;
    gmeow:embodies   ex:photoExpression ;
    gmeow:hasExifTag ex:exifMake , ex:exifDate ;
    gmeow:hasRegion  ex:faceRegion .

Common Companion Terms

gmeow:Manifestation

Projects To

Profile	External Targets
`exif`	`exif`
`foaf`	`foaf`
`iiif`	`iiif`, `rdf`
`schema-org`	`rdf`, `schema`

External Equivalences

Equivalent or closely aligned targets: dcmitype, iiif, schema, wd

Linkages

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

Term Equivalences

Source	Kind	Profile	Predicate/Relation	Target	Evidence
`gmeow:MediaObject`	equivalence	`-`	skos:relatedMatch	dcmitype:Image	`gmeow-dublin-core.sssom.tsv`; `gmeow:eqDcType003`; confidence 0.6
`gmeow:MediaObject`	equivalence	`-`	skos:relatedMatch	dcmitype:MovingImage	`gmeow-dublin-core.sssom.tsv`; `gmeow:eqDcType005`; confidence 0.6
`gmeow:MediaObject`	equivalence	`-`	skos:relatedMatch	dcmitype:Sound	`gmeow-dublin-core.sssom.tsv`; `gmeow:eqDcType004`; confidence 0.6
`gmeow:MediaObject`	equivalence	`-`	skos:closeMatch	iiif:Canvas	`gmeow-images.sssom.tsv`; `gmeow:eqImg060`; confidence 0.8
`gmeow:MediaObject`	equivalence	`-`	rdfs:subClassOf	schema:AudioObject	`gmeow-classes.sssom.tsv`; `gmeow:eqClasses026`; confidence 1
`gmeow:MediaObject`	equivalence	`-`	rdfs:subClassOf	schema:ImageObject	`gmeow-classes.sssom.tsv`; `gmeow:eqClasses025`; confidence 1
`gmeow:MediaObject`	equivalence	`-`	skos:closeMatch	schema:ImageObject	`gmeow-images.sssom.tsv`; `gmeow:eqImg001`; confidence 0.9
`gmeow:MediaObject`	equivalence	`-`	owl:equivalentClass	schema:MediaObject	`gmeow-classes.sssom.tsv`; `gmeow:eqClasses024`; confidence 1
`gmeow:MediaObject`	equivalence	`-`	skos:closeMatch	schema:MediaObject	`gmeow-creative-works.sssom.tsv`; `gmeow:eqCw025`; confidence 0.9
`gmeow:MediaObject`	equivalence	`-`	skos:closeMatch	wd:Q11734477	`gmeow-wikidata.sssom.tsv`; `gmeow:eqWikidata035`; confidence 0.75

Projection Coverage

Source	Kind	Profile	Predicate/Relation	Target	Evidence
`gmeow:MediaObject`	projection	`exif`	projects to / <=	exif:dateTime	`gmeow:mapExifDateTime`; confidence 0.9; lossy: provenance and confidence of the capture-time claim are dropped
`gmeow:MediaObject`	projection	`exif`	projects to / <=	exif:height	`gmeow:mapExifHeight`; confidence 0.95; lossy: unit (pixels) is implicit
`gmeow:MediaObject`	projection	`exif`	projects to / <=	exif:orientation	`gmeow:mapExifOrientation`; confidence 0.9; lossy: `gmeow:imageOrientation` is a decimal in degrees; it is passed through as-is to exif:orientation. EXIF enum values (1, 3, 6, 8) are not produced by this projection — downstream consumers must normalise if they need EXIF-style orientation tags.
`gmeow:MediaObject`	projection	`exif`	projects to / <=	exif:width	`gmeow:mapExifWidth`; confidence 0.95; lossy: unit (pixels) is implicit
`gmeow:MediaObject`	projection	`foaf`	projects to / <=	foaf:depiction	`gmeow:mapFoafDepiction`; confidence 0.85; lossy: the depiction's context/period/audience drop; the entity gains foaf:depiction pointing at the depicting MediaObject
`gmeow:MediaObject`	projection	`iiif`	projects to / <=	iiif:Canvas, iiif:height, iiif:width, rdf:type	`gmeow:mapIiifCanvas`; confidence 0.9; lossy: depicts, regions, capture metadata, and rights dropped; only type and dimensions survive
`gmeow:MediaObject`	projection	`schema-org`	projects to / <=	rdf:type, schema:ImageObject	`gmeow:mapSchemaImageObject`; confidence 0.9; lossy: MediaObject also covers audio and video; the ImageObject projection is lossy for non-image media
`gmeow:MediaObject`	projection	`schema-org`	projects to / <=	schema:dateCreated	`gmeow:mapSchemaCaptureTime`; confidence 0.9; lossy: provenance and confidence of the capture-time claim are dropped
`gmeow:MediaObject`	projection	`schema-org`	projects to / <=	schema:height	`gmeow:mapSchemaImageHeight`; confidence 0.9; lossy: unit (pixels) is implicit in schema:height when emitted as integer
`gmeow:MediaObject`	projection	`schema-org`	projects to / <=	schema:image	`gmeow:mapSchemaImage`; confidence 0.85; lossy: the depiction's context/period/audience drop; the entity gains schema:image pointing at the depicting MediaObject
`gmeow:MediaObject`	projection	`schema-org`	projects to / <=	schema:width	`gmeow:mapSchemaImageWidth`; confidence 0.9; lossy: unit (pixels) is implicit in schema:width when emitted as integer

Usage Advice

Use when

Use for a concrete image, audio, or video file — the published media artifact that carries pixel dimensions, a MIME type, a capture time, a transcript, or a depiction.

Avoid when

Avoid it for the abstract work the media realises (that is a gmeow:Work) and avoid it for a non-media web page (gmeow:WebPage); the colourspace reference frame should be carried where known (Principle 11).

How to use

Type the file gmeow:MediaObject, set gmeow:mediaType plus pixel/orientation/capture metadata, carry the colourspace frame via gmeow:colourspace, and record subjects with the flat gmeow:depicts (promote to a DepictionUsage relator when context matters).

Examples

ex:photo a gmeow:MediaObject; gmeow:mediaType "image/avif"; gmeow:pixelWidth 4032; gmeow:depicts ex:lillith.

Published Alignment Graph

Alignments

Relation	Target
`closeMatch`	`iiif:Canvas`
`closeMatch`	`schema:ImageObject`
`closeMatch`	`schema:MediaObject`
`closeMatch`	`wd:Q11734477`
`equivalentClass`	`schema:MediaObject`
`relatedMatch`	`dcmitype:Image`
`relatedMatch`	`dcmitype:MovingImage`
`relatedMatch`	`dcmitype:Sound`