Notch Notch Manual 0.9.23
 Light | Dark


Shrink bright pixels and expand darker pixels.


Method #

This node iteratively expands darker pixels in an image, eroding away at the bright areas and darkerning the overall image. Useful for shrinking a mask which doesn’t fit tightly around the subject.


These properties control the core behaviours of the node.

Blend AmountChanges the opacity of the new effect over the original image.
Iterations (Effect Size)How many times the erode function is run.
ModeWhich directions the image is eroded in.
  • Horizontal + Vertical : Both horizontal and vertical are eroded.
  • Horizontal : Only horizontal is eroded.
  • Vertical : Only vertical is eroded.
  • Cross : Both diagonals are eroded.


NameDescriptionTypical Input
ActiveEnables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.Envelope Modifier