---
title: regionOfInterest
framework: vision
role: symbol
role_heading: Instance Property
path: vision/imageprocessingrequest/regionofinterest
---

# regionOfInterest

The region of the image where the framework performs the request.

## Declaration

```swift
var regionOfInterest: NormalizedRect { get set }
```

## Discussion

Discussion The system normalizes the rectangle to the dimensions of the processed image. Its origin is the image’s lower-left corner. The default value is { { 0, 0 }, { 1, 1 } }.