User guide

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Control (UI) Default Value Function
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
channel A The channel from the out_mask input to use as a mask:
• R - use the red channel as the mask.
• G - use the green channel as the mask.
• B - use the blue channel as the mask.
• A - use the alpha channel as the mask.
By default, the merge is limited to the non-black areas of the
mask.
invert disabled Inverts the use of the mask channel so that the merge is limited
to the non-white areas of the mask.
fringe disabled When enabled, the mask is modified so that, by default, the
merge is limited to the fringe (semi-transparent areas).
operation ImageAtop If you don't want to layer the images together using the
ImageAtop compositing operation, select the operation to use
instead.
The following conventions apply to the below operation
descriptions:
• F refers to the fg input.
• f refers to the fg input's alpha channel.
• B refers to the bg input.
• b refers to the bg input's alpha channel.
4 NODES I-K | IMAGEATOP