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

# dither()

Applies randomized noise to produce a processed look.

## Declaration

```swift
class func dither() -> any CIFilter & CIDither
```

## Return Value

Return Value The modified image.

## Discussion

Discussion The effect applies a dithering effect to the input image. The effect applies randomized noise to the input image to produce a processed look. The dither filter uses the following properties: The following code creates a filter that adds desaturation to the input image: func dither(inputImage: CIImage) -> CIImage {     let ditherFilter = CIFilter.dither()     ditherFilter.inputImage = inputImage     ditherFilter.intensity = 0.4     return ditherFilter.outputImage! }

## See Also

### Color Effect Filters

- [colorCrossPolynomial()](coreimage/cifilter-swift.class/colorcrosspolynomial().md)
- [colorCube()](coreimage/cifilter-swift.class/colorcube().md)
- [colorCubeWithColorSpace()](coreimage/cifilter-swift.class/colorcubewithcolorspace().md)
- [colorCubesMixedWithMask()](coreimage/cifilter-swift.class/colorcubesmixedwithmask().md)
- [colorCurves()](coreimage/cifilter-swift.class/colorcurves().md)
- [colorInvert()](coreimage/cifilter-swift.class/colorinvert().md)
- [colorMap()](coreimage/cifilter-swift.class/colormap().md)
- [colorMonochrome()](coreimage/cifilter-swift.class/colormonochrome().md)
- [colorPosterize()](coreimage/cifilter-swift.class/colorposterize().md)
- [convertLabToRGB()](coreimage/cifilter-swift.class/convertlabtorgb().md)
- [convertRGBtoLab()](coreimage/cifilter-swift.class/convertrgbtolab().md)
- [documentEnhancer()](coreimage/cifilter-swift.class/documentenhancer().md)
- [falseColor()](coreimage/cifilter-swift.class/falsecolor().md)
- [labDeltaE()](coreimage/cifilter-swift.class/labdeltae().md)
- [maskToAlpha()](coreimage/cifilter-swift.class/masktoalpha().md)