---
title: VNHomographicImageRegistrationRequestRevision1
framework: vision
role: symbol
role_heading: Global Variable
path: vision/vnhomographicimageregistrationrequestrevision1
---

# VNHomographicImageRegistrationRequestRevision1

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

## Declaration

```swift
var VNHomographicImageRegistrationRequestRevision1: Int { get }
```