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W3C EXIF

Prefix: exif
Kind: schema
License: W3C-Document
Namespace / website: http://www.w3.org/2003/12/exif/ns#
External catalog: open catalog entry

Coverage

GMEOW source terms: 5
Projection rows: 8
Equivalence rows: 4
Profiles: exif
Slices: documents

How To Use This Target

Use native GMEOW terms as the authoring surface, then inspect the projection rows below to see which facts can leave GMEOW for this consumer vocabulary. Treat lossy notes as adoption warnings, not as implementation details.

Loss Notes

Profile	Source	Dropped Structure
`exif`	`gmeow:MediaObject`	provenance and confidence of the capture-time claim are dropped
`exif`	`gmeow:MediaObject`	unit (pixels) is implicit
`exif`	`gmeow:MediaObject`	`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.
`exif`	`gmeow:MediaObject`	unit (pixels) is implicit
`exif`	`gmeow:captureTime`	provenance and confidence of the capture-time claim are dropped
`exif`	`gmeow:imageOrientation`	`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.
`exif`	`gmeow:pixelHeight`	unit (pixels) is implicit
`exif`	`gmeow:pixelWidth`	unit (pixels) is implicit

Source Terms

Term	Label	Slice
`gmeow:MediaObject`	Media Object	`documents`
`gmeow:captureTime`	capture time	`documents`
`gmeow:imageOrientation`	image orientation	`documents`
`gmeow:pixelHeight`	pixel height	`documents`
`gmeow:pixelWidth`	pixel width	`documents`

Mapping Rows

Source	Kind	Profile	Predicate/Relation	Target	Evidence
`gmeow:captureTime`	equivalence	`-`	skos:closeMatch	exif:dateTime	`gmeow-images.sssom.tsv`; `gmeow:eqImg070`; confidence 0.9
`gmeow:imageOrientation`	equivalence	`-`	skos:closeMatch	exif:orientation	`gmeow-images.sssom.tsv`; `gmeow:eqImg022`; confidence 0.9
`gmeow:pixelHeight`	equivalence	`-`	skos:closeMatch	exif:height	`gmeow-images.sssom.tsv`; `gmeow:eqImg021`; confidence 0.9
`gmeow:pixelWidth`	equivalence	`-`	skos:closeMatch	exif:width	`gmeow-images.sssom.tsv`; `gmeow:eqImg020`; confidence 0.9
`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:captureTime`	projection	`exif`	projects to / <=	exif:dateTime	`gmeow:mapExifDateTime`; confidence 0.9; lossy: provenance and confidence of the capture-time claim are dropped
`gmeow:imageOrientation`	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:pixelHeight`	projection	`exif`	projects to / <=	exif:height	`gmeow:mapExifHeight`; confidence 0.95; lossy: unit (pixels) is implicit
`gmeow:pixelWidth`	projection	`exif`	projects to / <=	exif:width	`gmeow:mapExifWidth`; confidence 0.95; lossy: unit (pixels) is implicit