---
title: Sharpening Filters
framework: coreimage
role: collectionGroup
role_heading: API Collection
path: coreimage/sharpening-filters
---

# Sharpening Filters

Apply sharpening to images.

## Topics

### Filters

- [sharpenLuminance()](coreimage/cifilter-swift.class/sharpenluminance().md)
- [unsharpMask()](coreimage/cifilter-swift.class/unsharpmask().md)

### Protocols

- [CISharpenLuminance](coreimage/cisharpenluminance.md)
- [CIUnsharpMask](coreimage/ciunsharpmask.md)

## See Also

### Filter Catalog

- [Blur Filters](coreimage/blur-filters.md)
- [Color Adjustment Filters](coreimage/color-adjustment-filters.md)
- [Color Effect Filters](coreimage/color-effect-filters.md)
- [Composite Operations](coreimage/composite-operations.md)
- [Convolution Filters](coreimage/convolution-filters.md)
- [Distortion Filters](coreimage/distortion-filters.md)
- [Generator Filters](coreimage/generator-filters.md)
- [Geometry Adjustment Filters](coreimage/geometry-adjustment-filters.md)
- [Gradient Filters](coreimage/gradient-filters.md)
- [Halftone Effect Filters](coreimage/halftone-effect-filters.md)
- [Reduction Filters](coreimage/reduction-filters.md)
- [Stylizing Filters](coreimage/stylizing-filters.md)
- [Tile Effect Filters](coreimage/tile-effect-filters.md)
- [Transition Filters](coreimage/transition-filters.md)