---
title: VNGenerateObjectnessBasedSaliencyImageRequestRevision1
framework: vision
role: symbol
role_heading: Global Variable
path: vision/vngenerateobjectnessbasedsaliencyimagerequestrevision1
---

# VNGenerateObjectnessBasedSaliencyImageRequestRevision1

A constant for specifying revision 1 of the image saliency request.

## Declaration

```swift
var VNGenerateObjectnessBasedSaliencyImageRequestRevision1: Int { get }
```