User guide

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Control (UI) Default Value Function
displayWindow Background The frame size to output in the event that the fg and bg inputs
are different sizes:
• Background - output the frame size of the bg input.
• Foreground - output the frame size of the fg input.
• Union - output a combination of the bg and fg inputs' frame
sizes.
• Intersection - output an intersection of the bg and fg inputs'
frame sizes. This restricts the output to the area where the
two frame sizes overlap.
clampAlpha enabled When enabled, the output alpha channel is clamped to the 0-1
range. Color channels (RGB) are not affected.
ImageAverage
This node layers images together using the Average compositing algorithm: (F+B)/2. It produces the average of the
two images. The result is darker than the original images, but accentuates highlights.
You can also specify a different compositing algorithm using the operation control.
Also see ImageGeometric on page188 and ImageHypot on page192.
Control (UI) Default Value Function
R enabled When enabled, affect the red channel of the image.
G enabled When enabled, affect the green channel of the image.
B enabled When enabled, affect the blue channel of the image.
A enabled When enabled, affect the alpha channel of the image.
mix 1 Dissolves between the bg image at 0 and the full merge effect at
1.
Mask
4 NODES I-K | IMAGEAVERAGE