Class

VNTrackRectangleRequest

An image analysis request that tracks movement of a previously identified rectangular object across multiple images or video frames.

Overview

Use this type of request to track the bounding boxes of rectangles throughout a sequence of images. Vision returns locations for rectangles found in all orientations and sizes.

Topics

Initializing a Rectangle Tracking Request

init(rectangleObservation: VNRectangleObservation)

Creates a new rectangle tracking request with a rectangle observation.

init(rectangleObservation: VNRectangleObservation, completionHandler: VNRequestCompletionHandler? = nil)

Creates a new rectangle tracking request with a rectangle observation.

Relationships

Inherits From

Conforms To

See Also

Object Tracking

class VNTrackingRequest

The abstract superclass for image analysis requests that track unique features across multiple images or video frames.

class VNTrackObjectRequest

An image analysis request that tracks movement of a previously identified arbitrary object across multiple images or video frames.

class VNDetectedObjectObservation

An image analysis result that provides the position and extent of a detected image feature.