Inverting Channel Values
To invert a channel is to subtract its values from one, which causes its blacks to become white and its whites to become black. In the course of building a script, you’ll have frequent need to invert mattes in particular.
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Inverting channel values. | Inverting channel values. |
To invert channels you use Nuke’s Invert node.
To invert channel values
1. | Click Color > Invert to insert an Invert node at the appropriate point in your script. |
2. | Connect a Viewer to the output of the Invert node so you can see the effect of your changes. |
3. | In the Invert properties panel, use the channels field to select the channel you wish to invert. |