---
title: boundingRegion
framework: vision
role: symbol
role_heading: Instance Property
path: vision/boundingregionproviding/boundingregion
---

# boundingRegion

A polygon that defines the boundary of an area in the image.

## Declaration

```swift
var boundingRegion: NormalizedRegion { get }
```

## Discussion

Discussion Similar to a bounding box, however it can have more than 4 points comprising the boundary.