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morphologyGradient()

Detects and highlights edges of objects.

Declaration

class func morphologyGradient() -> any CIFilter & CIMorphologyGradient

Return Value

The blurred image.

Discussion

This method applies the morphology gradient filter to an image. The effect uses the radius to compute and highlight edges of items within the image.

The morphology gradient filter uses the following properties:

radius

A float representing the area of effect as an NSNumber.

inputImage

A CIImage representing the input image to apply the filter to.

The following code creates a filter that adds darkness to the overall image while the edges in the input photo become brighter:

    func morphologyGradient(inputImage: CIImage) -> CIImage? {

        let morphologyGradientFilter = CIFilter.morphologyGradient()
        morphologyGradientFilter.inputImage = inputImage
        morphologyGradientFilter.radius = 1
        return morphologyGradientFilter.outputImage
    }

[Image]

See Also

Filters