User Manual

Remove Noise [RN]
The RemoveNoise node
Remove Noise Node Introduction
The Remove Noise node provides simple noise management. The basic operation is that the
node blurs the image channels, and then compares the blurred image to the original to extract
the noise. A sharpness is then applied to the image, except where noise was detected.
To use this node, view the image and look at the red channel. Then increase the Red Softness
until the grain appears to be gone. Next, increase the sharpness until the detail reappears, but
stop before the grain reappears. Repeat for the green and blue channels.
Inputs
There are two inputs on the Remove Noise node: one for the 2D image and one for the
effects mask.
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Input: The orange input is used for the primary 2D image that gets noise removed.
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Effect Mask: The blue input is for a mask shape created by polylines, basic primitive
shapes, paint strokes, or bitmaps from other tools. Connecting a mask to this input
limits the noise removal change to be within the pixels of the mask. An effects mask
is applied to the tool after the tool is processed.
Basic Node Setup
The Remove Noise node can be used on any clip with noise. For example, it is used below to
remove noise prior to keying the clip using the DeltaKeyer.
A Remove Noise node used to remove noise prior to keying
Chapter – 90 Film Nodes 2027