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# VNImageTranslationAlignmentObservation

Affine transform information that an image-alignment request produces.

```
class VNImageTranslationAlignmentObservation
```

## Overview

This type of observation results from a [`VNTranslationalImageRegistrationRequest`](/documentation/Vision/VNTranslationalImageRegistrationRequest), informing the [`alignmentTransform`](/documentation/Vision/VNImageTranslationAlignmentObservation/alignmentTransform) performed to align the input images.

## Topics

### Determining Alignment

[`alignmentTransform`](/documentation/Vision/VNImageTranslationAlignmentObservation/alignmentTransform)

The alignment transform to align the floating image with the reference image.

### Identifying Request Revisions

[`VNTranslationalImageRegistrationRequestRevision1`](/documentation/Vision/VNTranslationalImageRegistrationRequestRevision1)

A constant for specifying revision 1 of the translational image registration request.


---

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