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# VNImageRegistrationRequest

The abstract superclass for image-analysis requests that align images according to their content.

```
class VNImageRegistrationRequest
```

## Overview

This abstract superclass forms the basis of image alignment or registration requests. Make specific requests through one of its subclasses, [`VNTranslationalImageRegistrationRequest`](/documentation/Vision/VNTranslationalImageRegistrationRequest) or [`VNHomographicImageRegistrationRequest`](/documentation/Vision/VNHomographicImageRegistrationRequest). Don’t create an instance of this superclass yourself.

---

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