---
title: Blur Filters
framework: coreimage
role: collectionGroup
role_heading: API Collection
path: coreimage/blur-filters
---

# Blur Filters

Apply blurs, simulate motion and zoom effects, reduce noise, and erode and dilate image regions.

## Topics

### Filters

- [bokehBlur()](coreimage/cifilter-swift.class/bokehblur().md)
- [boxBlur()](coreimage/cifilter-swift.class/boxblur().md)
- [discBlur()](coreimage/cifilter-swift.class/discblur().md)
- [gaussianBlur()](coreimage/cifilter-swift.class/gaussianblur().md)
- [maskedVariableBlur()](coreimage/cifilter-swift.class/maskedvariableblur().md)
- [median()](coreimage/cifilter-swift.class/median().md)
- [morphologyGradient()](coreimage/cifilter-swift.class/morphologygradient().md)
- [morphologyMaximum()](coreimage/cifilter-swift.class/morphologymaximum().md)
- [morphologyMinimum()](coreimage/cifilter-swift.class/morphologyminimum().md)
- [morphologyRectangleMaximum()](coreimage/cifilter-swift.class/morphologyrectanglemaximum().md)
- [morphologyRectangleMinimum()](coreimage/cifilter-swift.class/morphologyrectangleminimum().md)
- [motionBlur()](coreimage/cifilter-swift.class/motionblur().md)
- [noiseReduction()](coreimage/cifilter-swift.class/noisereduction().md)
- [zoomBlur()](coreimage/cifilter-swift.class/zoomblur().md)

### Protocols

- [CIBokehBlur](coreimage/cibokehblur.md)
- [CIBoxBlur](coreimage/ciboxblur.md)
- [CIDiscBlur](coreimage/cidiscblur.md)
- [CIGaussianBlur](coreimage/cigaussianblur.md)
- [CIMaskedVariableBlur](coreimage/cimaskedvariableblur.md)
- [CIMedian](coreimage/cimedian.md)
- [CIMorphologyGradient](coreimage/cimorphologygradient.md)
- [CIMorphologyMaximum](coreimage/cimorphologymaximum.md)
- [CIMorphologyMinimum](coreimage/cimorphologyminimum.md)
- [CIMorphologyRectangleMaximum](coreimage/cimorphologyrectanglemaximum.md)
- [CIMorphologyRectangleMinimum](coreimage/cimorphologyrectangleminimum.md)
- [CIMotionBlur](coreimage/cimotionblur.md)
- [CINoiseReduction](coreimage/cinoisereduction.md)
- [CIZoomBlur](coreimage/cizoomblur.md)

## See Also

### Filter Catalog

- [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)
- [Sharpening Filters](coreimage/sharpening-filters.md)
- [Stylizing Filters](coreimage/stylizing-filters.md)
- [Tile Effect Filters](coreimage/tile-effect-filters.md)
- [Transition Filters](coreimage/transition-filters.md)