Duff-Porter Alpha-Compositing Operators
Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
In image alpha-compositing, the Duff–Porter operators are a standard set of 12 rules for determining the RGB values of each output pixel as a function of the RGB values of two corresponding input pixels. In this Demonstration an image of a spiral staircase (the "object") is composited with a background image of a tiger (the "image"). The default object "over" image compositing method corresponds to the usual application of alpha blending to semi-transparent foreground objects. Different compositing methods produce other interesting effects.
Contributed by: Andrew Moylan (March 2011)
Open content licensed under CC BY-NC-SA
"Duff-Porter Alpha-Compositing Operators"
Wolfram Demonstrations Project
Published: March 7 2011