User Manual

Table Of Contents
The Common Controls
Nodes that handle optical flow operations share a number of identical controls in the Inspector.
This section describes controls that are common among Optical Flow nodes.
Inspector
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Settings Tab
The Settings tab in the Inspector can be found on every tool in the Optical Flow category. The
controls are consistent and work the same way for each tool.
Blend
The Blend control is used to blend between the tool’s original image input and the tool’s final
modified output image. When the blend value is 0.0, the outgoing image is identical to the
incoming image. Normally, this causes the tool to skip processing entirely, copying the input
straight to the output.
Process When Blend Is 0.0
The tool is processed even when the input value is zero. This can be useful when this node
process is scripted to trigger another task, but the value of the node is set to 0.0.
Red/Green/Blue/Alpha Channel Selector
These four buttons are used to limit the effect of the tool to specified color channels. This filter
is often applied after the tool has been processed.
For example, if the Red button on a Blur tool is deselected, the blur is first applied to the image,
and then the red channel from the original input will be copied back over the red channel of
the result.
Chapter – 101 Optical Flow 2252