Detection
About detections
Detections are the lowest level unit of computer vision primitive within Worlds. A detection represents a single frame of a recognized object, which then has additional data associated with it, including its position, track, and interactions with zones and geofences.
globalTrackId
The global track id that governs the detection, if any.
Type: String
deviceId
The unique identifier of the device where the detection occurred.
Type: ID
tag
The class label of the detected object, i.e person, car, truck, etc.
Type: String!
frame
Information about the video frame in which this detection was captured
Type: Frame
timestamp
The time at which the detection occurred.
Type: DateTimeOffset!
polygon
A GeoJSON polygon that represents the spatial bounds of the detection.
Type: GeoJSONPolygon
position
A GeoJSON point that represents the location of the detection in the world. This value may be null if the camera that captured the detection hasn’t been calibrated. It may also be null if the location cannot be calculated (i.e the detected object is in the sky).
Type: GeoJSONPoint
track
The track that is associated with the detection.
Type: Track!
zones
A list of Zones with which the detection intersects.
Type: [Zone!]!
geofences
A list of Geofences with which the detection intersects.
Type: [Geofence!]!
zoneIds
A list of zone unique identifiers with which the detection intersects.
Type: [ID!]!
geofenceIds
A list of geofence unique identifiers with which the detection intersects.
Type: [ID!]!
zoneEvents
A list of zone events related to this detection.
Type: [ZoneEvent!]!
geofenceEvents
A list of geofence events related to this detection.
Type: [GeofenceEvent!]!
metadata
Arbitrary metadata associated with the detection.
Type: JSON
createdAt
Timestamp that the detection was created. May be delayed from the
timestamp due to post-processing video feeds or other latency.
Type: DateTimeOffset
updatedAt
Timestamp that the detection was most recently updated.
Type: DateTimeOffset
direction
The direction in which the detection is moving, represented in degrees.
Type: Float