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# Sharpening Filters

Apply sharpening to images.

## Topics

### Filters

[`+  sharpenLuminanceFilter`](/documentation/CoreImage/CIFilter-swift.class/sharpenLuminance())

Applies a sharpening effect to an image.

[`+  unsharpMaskFilter`](/documentation/CoreImage/CIFilter-swift.class/unsharpMask())

Increases an image’s contrast between two colors.

### Protocols

[`CISharpenLuminance`](/documentation/CoreImage/CISharpenLuminance)

The properties you use to configure a sharpen luminance filter.

[`CIUnsharpMask`](/documentation/CoreImage/CIUnsharpMask)

The properties you use to configure an unsharp mask filter.


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