CIMultiplyCompositing - emcconville/cif GitHub Wiki

CIMultiplyCompositing

Multiplies the color component of two input images and creates an output image using the multiplied values. This filter is typically used to add a spotlight or similar lighting effect to an image.

• -inputImage <image> : The image to use as an input image. For filters that also use a background image, this is the foreground image.
• -inputBackgroundImage <image> : The image to use as a background image.