Difference Key Node
This node produces a matte that isolates foreground content by comparing it with a reference background image.
Inputs
- Image
Contains foreground content against the background that is to be removed.
- Image
The reference background image.
Properties
- Tolerance
Where pixels match the reference background to within the specified threshold, the matte is made transparent.
- Falloff
Increase to make nearby pixels partially transparent producing a smoother blend along the edges.
Outputs
- Image
Image with its alpha channel adjusted for the keyed selection.
- Matte
A black-and-white alpha mask of the key.