---
title: nrSharpness
framework: coreimage
role: symbol
role_heading: Instance Property
path: coreimage/cilineoverlay/nrsharpness
---

# nrSharpness

The amount of sharpening done when removing noise in the image before tracing the edges of the image.

## Declaration

```swift
var nrSharpness: Float { get set }
```

## Discussion

Discussion This improves the edge acquisition.

## See Also

### Instance Properties

- [nrNoiseLevel](coreimage/cilineoverlay/nrnoiselevel.md)
- [contrast](coreimage/cilineoverlay/contrast.md)
- [edgeIntensity](coreimage/cilineoverlay/edgeintensity.md)
- [inputImage](coreimage/cilineoverlay/inputimage.md)
- [threshold](coreimage/cilineoverlay/threshold.md)