Module tracking 

Available on crate feature tracking only.

Stateful Vision tracking requests backed by retained Swift sessions.

These wrappers keep the underlying Vision request alive across frames, which is required for object / rectangle tracking and the sequence-based optical-flow and image-registration trackers.

Structs

HomographicImageTracker

Tracks homographic image registration across frames.

ObjectTracker

Tracks a detected object’s bounding box across a sequence of frames.

OpticalFlowFrame

Raw optical-flow pixel buffer copied out of Vision.

OpticalFlowTracker

Tracks dense optical flow across a frame sequence.

RectangleTracker

Tracks a known rectangle observation across a sequence of frames.

TranslationalImageTracker

Tracks translational image registration across frames.

Type Aliases

TrackOpticalFlowRequestComputationAccuracy

Public alias for VNTrackOpticalFlowRequest.ComputationAccuracy.