---
title: VNTrackTranslationalImageRegistrationRequest
framework: vision
role: symbol
role_heading: Class
path: vision/vntracktranslationalimageregistrationrequest
---

# VNTrackTranslationalImageRegistrationRequest

An image-analysis request, as a stateful request you track over time, that determines the affine transform necessary to align the content of two images.

## Declaration

```swift
class VNTrackTranslationalImageRegistrationRequest
```

## Overview

Overview This request is similar to VNTranslationalImageRegistrationRequest. However, as a VNStatefulRequest, it automatically computes the registration against the previous frame.

## Topics

### Creating a Translational Image

- [init()](vision/vntracktranslationalimageregistrationrequest/init().md)
- [init(completionHandler:)](vision/vntracktranslationalimageregistrationrequest/init(completionhandler:).md)

### Accessing the Results

- [results](vision/vntracktranslationalimageregistrationrequest/results.md)

## Relationships

### Inherits From

- [VNStatefulRequest](vision/vnstatefulrequest.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Image alignment

- [Aligning Similar Images](vision/aligning-similar-images.md)
- [VNTargetedImageRequest](vision/vntargetedimagerequest.md)
- [VNImageRegistrationRequest](vision/vnimageregistrationrequest.md)
- [VNTranslationalImageRegistrationRequest](vision/vntranslationalimageregistrationrequest.md)
- [VNHomographicImageRegistrationRequest](vision/vnhomographicimageregistrationrequest.md)
- [VNTrackHomographicImageRegistrationRequest](vision/vntrackhomographicimageregistrationrequest.md)
- [VNImageAlignmentObservation](vision/vnimagealignmentobservation.md)
- [VNImageTranslationAlignmentObservation](vision/vnimagetranslationalignmentobservation.md)
- [VNImageHomographicAlignmentObservation](vision/vnimagehomographicalignmentobservation.md)