---
title: topLeft
framework: coreimage
role: symbol
role_heading: Instance Property
path: coreimage/cirectanglefeature/topleft-swift.property
---

# topLeft

The upper-left corner of the detected rectangle, in image coordinates.

## Declaration

```swift
var topLeft: CGPoint { get }
```

## See Also

### Identifying the Corners of a Detected Rectangle

- [bottomLeft](coreimage/cirectanglefeature/bottomleft-swift.property.md)
- [bottomRight](coreimage/cirectanglefeature/bottomright-swift.property.md)
- [topRight](coreimage/cirectanglefeature/topright-swift.property.md)