---
title: median()
framework: coreimage
role: symbol
role_heading: Type Method
path: coreimage/cifilter-swift.class/median()
---

# median()

Calculates the median of an image to refine detail.

## Declaration

```swift
class func median() -> any CIFilter & CIMedian
```

## Return Value

Return Value The blurred image.

## Discussion

Discussion This method applies the median filter to an image. The effect computes the median value of colors for a group of neighboring pixels and replaces each pixel with calculated data. The median filter uses the following properties: The following code creates a filter that refines the detail in the input image:     func medianBlur(inputImage: CIImage) -> CIImage? {

let medianBlurFilter = CIFilter.median()         medianBlurFilter.inputImage = inputImage         return medianBlurFilter.outputImage     }

## See Also

### 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)
- [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)