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lightenBlendMode()

Blends colors from two images by brightening colors.

Declaration

class func lightenBlendMode() -> any CIFilter & CICompositeOperation

Return Value

The modified image.

Discussion

This method applies the lighten-blend mode filter to an image. The effect replaces any samples in the background image that are darker than input image.

The lighten-blend mode filter uses the following properties:

inputImage

An image with the type CIImage.

backgroundImage

An image with the type CIImage.

The following code creates a filter that results in the image that blends the input and background image colors:

func lightenBlendMode(inputImage: CIImage, backgroundImage: CIImage) -> CIImage {
    let colorBlendFilter = CIFilter.lightenBlendMode()
    colorBlendFilter.inputImage = inputImage
    colorBlendFilter.backgroundImage = backgroundImage
    return colorBlendFilter.outputImage!
}

[Image]

See Also

Filters