---
title: CIAreaReductionFilter
framework: coreimage
role: symbol
role_heading: Protocol
path: coreimage/ciareareductionfilter
---

# CIAreaReductionFilter

## Declaration

```swift
protocol CIAreaReductionFilter : CIFilterProtocol
```

## Topics

### Instance Properties

- [extent](coreimage/ciareareductionfilter/extent.md)
- [inputImage](coreimage/ciareareductionfilter/inputimage.md)

## Relationships

### Inherits From

- [CIFilterProtocol](coreimage/cifilterprotocol.md)

### Inherited By

- [CIAreaAverage](coreimage/ciareaaverage.md)
- [CIAreaAverageMaximumRed](coreimage/ciareaaveragemaximumred.md)
- [CIAreaBoundsRed](coreimage/ciareaboundsred.md)
- [CIAreaHistogram](coreimage/ciareahistogram.md)
- [CIAreaLogarithmicHistogram](coreimage/ciarealogarithmichistogram.md)
- [CIAreaMaximum](coreimage/ciareamaximum.md)
- [CIAreaMaximumAlpha](coreimage/ciareamaximumalpha.md)
- [CIAreaMinMax](coreimage/ciareaminmax.md)
- [CIAreaMinMaxRed](coreimage/ciareaminmaxred.md)
- [CIAreaMinimum](coreimage/ciareaminimum.md)
- [CIAreaMinimumAlpha](coreimage/ciareaminimumalpha.md)
- [CIColumnAverage](coreimage/cicolumnaverage.md)
- [CIKMeans](coreimage/cikmeans.md)
- [CIRowAverage](coreimage/cirowaverage.md)

## See Also

### Protocols

- [CIAreaAverage](coreimage/ciareaaverage.md)
- [CIAreaHistogram](coreimage/ciareahistogram.md)
- [CIAreaLogarithmicHistogram](coreimage/ciarealogarithmichistogram.md)
- [CIAreaMaximum](coreimage/ciareamaximum.md)
- [CIAreaMaximumAlpha](coreimage/ciareamaximumalpha.md)
- [CIAreaMinMax](coreimage/ciareaminmax.md)
- [CIAreaMinMaxRed](coreimage/ciareaminmaxred.md)
- [CIAreaMinimum](coreimage/ciareaminimum.md)
- [CIAreaMinimumAlpha](coreimage/ciareaminimumalpha.md)
- [CIColumnAverage](coreimage/cicolumnaverage.md)
- [CIHistogramDisplay](coreimage/cihistogramdisplay.md)
- [CIKMeans](coreimage/cikmeans.md)
- [CIRowAverage](coreimage/cirowaverage.md)