This documentation is for version 1.0 of Difference (net.sf.openfx.DifferencePlugin).
Produce a rough matte from the difference of two input images.
A is the background without the subject (clean plate). B is the subject with the background. RGB is copied from B, the difference is output to alpha, after applying offset and gain.
See also: https://web.archive.org/web/20220524000628/http://www.opticalenquiry.com/nuke/index.php?title=The_Keyer_Nodes#Difference and https://web.archive.org/web/20211023071843/http://opticalenquiry.com/nuke/index.php?title=Keying_Tips
|B||The subject with the background.||No|
|A||The background without the subject (a clean plate).||No|
|Parameter / script name||Type||Default||Function|
||Double||0||Value subtracted to each pixel of the output|
||Double||1||Multiply each pixel of the output by this value|