Annotation > Region > Polygon > BoundingBox

Definition	A rectangular object in an image or video. It does not add new features compared to its parent type Polygon, but it ntroduced as a subtype because the term is in widespread use.
URI	http://mmif.clams.ai/0.1.0/vocabulary/BoundingBox

Metadata

Metadata from Region

Property	Type	Description
unit	String	The unit used to determine boundaries. For text regions this is typically *offsets* to indicate character offsets, for images this is could be *pixels*, and for audio or video streams *seconds*, *milliseconds*, *timestamps* or *frames*.

Metadata from Annotation

Property	Type	Description
medium	ID	The identifier of the medium that the annotation is over. [Required]

Properties

Properties from Polygon

Property	Type	Description
coordinates	List of pairs	The coordinates of the polygon. [Required]
timePoint	ID	If on a video stream, the TimePoint that the BoundingBox occurs in.

Properties from Annotation

Property	Type	Description
id	ID	A unique identifier for the annotation. Uniqueness is relative to the view the annotation is in. [Required]