Anno Specific 5

Annotating Parts of Embedded Resources

Anno-Specific-5

Use case

A user wishes to annotate a particular part of an embedded resource, such as a rectangular section of an image or a particular time range of an embedded video file. The annotation should be rendered with this information, rather than simply attached to the embedded resource itself. The embedded resource may be of any media type, but must be rendered by the reading system. Thus video, image, audio and similar are in scope for this use case, but not stylesheets or scripts which are not rendered directly. Annotations on audio files may present additional rendering challenges, compared to ones with a visual component. The user then wishes to share the annotation with others.

Requirement(s)

* Identity of embedded resources (URI)

* Ability to select parts of embedded resources

* High level semantic description of the part (i.e. 'user selected portion of this image') and ability for the annotator to name the part (i.e. 'the oak tree')

* HTML format for user generated comment

* Ability to share between systems

* Persistence of Annotation between sessions

Stakeholder(s)

USERS-ALL, CLIENT-ALL

Ranking

TBD

Relations/dependencies

None

Relevant W3C group(s)/specification(s)

Primary: Open Annotation; Fragments Working Group (for identification of positions within a publication via URI Fragments) ; HTML5 (ditto)

Secondary: JSON-LD (serialization) ; RDF (model)

Comments

None

Submitted by

Rob Sanderson

Status

NEW