Keying with Primatte

This section explains how to use the blue/green screen keyer, Primatte, in Nuke.

Quick Start

1.

Connect the Primatte node to your background and foreground images. See Connecting the Primatte Node.

2.

Click on the Auto-Compute button. Primatte attempts to automatically sample the backing screen color and perform the cleanup phases of keying with Primatte.

If you get good results, jump ahead to spill removal. See Spill Removal - Method #1.

If you don't get the results you wanted from Auto-Compute, continue to step 3.

3.

Click the operation dropdown, select Smart Select BG Color, and manually sample the targeted background color by holding Ctrl/Cmd and clicking in the Viewer.

Tip:  You can discard sampled pixels by Ctrl/Cmd+right-clicking in the Viewer.

See Smart Select BG Color for more information.

4.

Click the operation dropdown, select Clean BG Noise, and clean up any remaining white regions in the dark, bluescreen area by sampling in the Viewer.

See Clean BG Noise for more information.

5.

Click the operation dropdown, select Clean FG Noise, and clean up any dark regions in the foreground by sampling in the Viewer.

See Clean FG Noise for more information.

6.

Remove any spill using the spill removal tools. See Spill Removal - Method #1.