---
title: TrackRectangleRequest
framework: vision
role: symbol
role_heading: Class
path: vision/trackrectanglerequest
---

# TrackRectangleRequest

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

## Declaration

```swift
final class TrackRectangleRequest
```

## Overview

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. The request returns the resulting rectangle data in an instance of RectangleObservation.

## Topics

### Creating a request

- [init(detectedRectangle:_:frameAnalysisSpacing:)](vision/trackrectanglerequest/init(detectedrectangle:_:frameanalysisspacing:).md)

### Performing a request

- [perform(on:orientation:)](vision/imageprocessingrequest/perform(on:orientation:)-80bya.md)
- [perform(on:orientation:)](vision/imageprocessingrequest/perform(on:orientation:)-3f3f1.md)
- [perform(on:orientation:)](vision/imageprocessingrequest/perform(on:orientation:)-qxxx.md)
- [perform(on:orientation:)](vision/imageprocessingrequest/perform(on:orientation:)-xspx.md)
- [perform(on:orientation:)](vision/imageprocessingrequest/perform(on:orientation:)-3hddl.md)
- [perform(on:orientation:)](vision/imageprocessingrequest/perform(on:orientation:)-85ex1.md)

### Understanding the result

- [RectangleObservation](vision/rectangleobservation.md)

### Configuring a request

- [inputObservation](vision/trackrectanglerequest/inputobservation.md)
- [QuadrilateralProviding](vision/quadrilateralproviding.md)
- [trackingLevel](vision/trackrectanglerequest/trackinglevel-swift.property.md)
- [TrackRectangleRequest.TrackingLevel](vision/trackrectanglerequest/trackinglevel-swift.enum.md)

### Getting the revision

- [revision](vision/trackrectanglerequest/revision-swift.property.md)
- [supportedRevisions](vision/trackrectanglerequest/supportedrevisions.md)
- [TrackRectangleRequest.Revision](vision/trackrectanglerequest/revision-swift.enum.md)

## Relationships

### Conforms To

- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [ImageProcessingRequest](vision/imageprocessingrequest.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [StatefulRequest](vision/statefulrequest.md)
- [VisionRequest](vision/visionrequest.md)

## See Also

### Motion and object tracking

- [DetectTrajectoriesRequest](vision/detecttrajectoriesrequest.md)
- [TrackObjectRequest](vision/trackobjectrequest.md)
- [TrackOpticalFlowRequest](vision/trackopticalflowrequest.md)