User Manual

Common Controls
Settings Tab
The Settings tab controls are common to all Filter nodes, so their descriptions can be found in
“The Common Controls” section at the end of this chapter.
Erode Dilate Node [ErDl]
The ErodeDilate node
Erode Dilate Node Introduction
The Erode Dilate node contracts or expands the image, depending on whether the Amount
slider is set to a negative or positive value.
Inputs
The Erode Dilate node includes two inputs: one for the main image and the other for an effect
mask to limit the area where the erode or dilate is applied.
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Input: The orange input takes the RGBA channels from an image to calculate the
custom filter.
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Effect Mask: The optional blue effect mask input accepts a mask shape created
by polylines, basic primitive shapes, paint strokes, or bitmaps from other tools.
Connecting a mask to this input limits the erode or dilate to only those pixels within
the mask. An effects mask is applied to the tool after the tool is processed.
Basic Node Setup
The Erode Dilate node is commonly used to contract or expand mattes. Below, a Luma Keyer is
connected to the Erode Dilate and passes the modified key to a Matte Control where it is
embedded into the image.
An Erode Dilate node placed after a Luma Keyer to operate on a Matte Control
Chapter – 91 Filter Nodes 2040