User guide

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Control (UI) Default Value Function
premultiplied disabled When enabled, treat the fg colors as being premultiplied by the
original alpha, before applying the new alpha adjustment.
curves
[bg and fg curves] N/A Adjusts the background and foreground values.
X 0 Displays the currently selected X point position on the active
curve.
You can also adjust the selected X point by entering positional
Y 1 Displays the currently selected Y point position on the active
curve.
Reset Tangent N/A Click to reset any tangential changes applied to the selected
curve.
[snapping mode] off Sets the point snapping mode:
• off - no snapping is active.
• frames - point movement snaps to the fr
• grid - point movement snaps to the grid in the curves display.
[segment expression] bezier() Sets the segment expression which governs how the curve is
interpolated between the two control points.
ImageAtop
This node layers images together using the Atop compositing algorithm: Fb+B(1-f). It shows the shape of the
background, with the foreground covering the background where the images overlap.
You can also specify a different compositing algorithm using the operation control.
Control (UI) Default Value Function
R enabled When enabled, affect the red channel of the image.
4 NODES I-K | IMAGEATOP