---
title: VNGenerateForegroundInstanceMaskRequestRevision1
framework: vision
role: symbol
role_heading: Global Variable
path: vision/vngenerateforegroundinstancemaskrequestrevision1
---

# VNGenerateForegroundInstanceMaskRequestRevision1

A constant for specifying the first revision of the foreground instance mask request.

## Declaration

```swift
var VNGenerateForegroundInstanceMaskRequestRevision1: Int { get }
```

## See Also

### Image background removal

- [Applying visual effects to foreground subjects](vision/applying-visual-effects-to-foreground-subjects.md)
- [VNInstanceMaskObservation](vision/vninstancemaskobservation.md)
- [VNGenerateForegroundInstanceMaskRequest](vision/vngenerateforegroundinstancemaskrequest.md)