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

# areaMinimum()

Calculates the minimum color component values for a specified area of the image.

## Declaration

```swift
class func areaMinimum() -> any CIFilter & CIAreaMinimum
```

## Return Value

Return Value A 1 x 1 size image containing the minimum color component values.

## Discussion

Discussion This filter returns the minimum color components in the region defined by extent. The area minimum filter uses the following properties: The following code creates a filter that calculates the minimum color components of a 500 x 500 set of pixels from the center of the image: func areaMinimum(inputImage: CIImage) -> CIImage {     let filter = CIFilter.areaMinimum()     filter.inputImage = inputImage     filter.extent = CGRect(         x: inputImage.extent.width/2-250,         y: inputImage.extent.height/2-250,         width: 500,         height: 500)     return filter.outputImage! }

## See Also

### Filters

- [areaAverage()](coreimage/cifilter-swift.class/areaaverage().md)
- [areaHistogram()](coreimage/cifilter-swift.class/areahistogram().md)
- [areaLogarithmicHistogram()](coreimage/cifilter-swift.class/arealogarithmichistogram().md)
- [areaMaximum()](coreimage/cifilter-swift.class/areamaximum().md)
- [areaMaximumAlpha()](coreimage/cifilter-swift.class/areamaximumalpha().md)
- [areaMinimumAlpha()](coreimage/cifilter-swift.class/areaminimumalpha().md)
- [areaMinMax()](coreimage/cifilter-swift.class/areaminmax().md)
- [areaMinMaxRed()](coreimage/cifilter-swift.class/areaminmaxred().md)
- [columnAverage()](coreimage/cifilter-swift.class/columnaverage().md)
- [histogramDisplay()](coreimage/cifilter-swift.class/histogramdisplay().md)
- [kMeans()](coreimage/cifilter-swift.class/kmeans().md)
- [rowAverage()](coreimage/cifilter-swift.class/rowaverage().md)