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

# labDeltaE()

Compares an image’s color values.

## Declaration

```swift
class func labDeltaE() -> any CIFilter & CILabDeltaE
```

## Return Value

Return Value The modified image.

## Discussion

Discussion This method applies the Lab ΔE filter to an image. The effect creates an image based on the visual color differences between the two input images. The resulting image contains ΔE 1994 values between 0.0 and 100.0. The Lab ΔE filter uses the following properties: The following code creates a filter that removes the background from the input image: func labDeltaE(inputImage: CIImage, inputImage2: CIImage) -> CIImage {     let labDeltaEFilter = CIFilter.labDeltaE()     labDeltaEFilter.inputImage = inputImage     labDeltaEFilter.image2 = inputImage2     return labDeltaEFilter.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)
- [dither()](coreimage/cifilter-swift.class/dither().md)
- [documentEnhancer()](coreimage/cifilter-swift.class/documentenhancer().md)
- [falseColor()](coreimage/cifilter-swift.class/falsecolor().md)
- [maskToAlpha()](coreimage/cifilter-swift.class/masktoalpha().md)