Difference node¶
This documentation is for version 1.0 of Difference (net.sf.openfx.DifferencePlugin).
Description¶
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: http://opticalenquiry.com/nuke/index.php?title=The_Keyer_Nodes#Difference and http://opticalenquiry.com/nuke/index.php?title=Keying_Tips
Inputs¶
| Input | Description | Optional |
|---|---|---|
| B | The subject with the background. | No |
| A | The background without the subject (a clean plate). | No |
Controls¶
| Parameter / script name | Type | Default | Function |
|---|---|---|---|
Offset / offset |
Double | 0 | Value subtracted to each pixel of the output |
Gain / gain |
Double | 1 | Multiply each pixel of the output by this value |