AVMetadataFocusTrackedObject
A metadata object that is maintained in focus by the camera’s auto focus system continuously tracking it.
Declaration
class AVMetadataFocusTrackedObjectOverview
AVMetadataFocusTrackedObject represents a single tracked object in a picture. It is an immutable object describing the focus-tracked object.
On supported platforms, AVCaptureMetadataOutput outputs arrays of focus-tracked objects. See AVCaptureOutput.h.