User Manual

Common Controls
Settings Tab
The Settings tab in the Inspector is also duplicated in other Blur nodes. These common controls
are described in detail at the end of this chapter in “The Common Controls” section.
Vector Motion Blur [VBL]
The VectorMotionBlur node
Vector Motion Blur Introduction
This node is used to create directional blurs based on a Motion Vector map or AOV (Arbitrary
Output Variable) channels exported from 3D-rendering software like Arnold, Renderman, or
VRay. You can also generate motion vectors using the Optical Flow node in Fusion.
The vector map is typically two floating-point images: one channel specifies how far the pixel is
moving in X, and the other specifies how far the pixel is moving in Y. These channels may be
embedded in OpenEXR or RLA/RPF images, or may be provided as separate images using the
node’s Vectors input.
The vector channels should use a float16 or float32 color depth, to provide + and – values.
A value of 1 in the X channel would indicate that pixel has moved one pixel to the right, while a
value of –10 indicates ten pixels of movement to the left.
Inputs
The Vector Motion Blur node has three inputs for a 2D image, a motion vector pass, and an
effect mask.
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Input: The required orange input is for a 2D image that receives the motion blur.
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Vectors: The green input is also required. This is where you connect a motion vector
AOV rendered from a 3D application or an EXR file generated from the Optical Flow
node in Fusion.
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Vector Mask: The white Vector Mask input is an optional input that masks the image
before processing.
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Effect Mask: The common blue input is used for a mask shape created by polylines,
basic primitive shapes, paint strokes, or bitmaps from other tools. Connecting a mask
to this input restricts the source of the motion blur to only those pixels within the
mask. An effect mask is applied to the tool after it is processed.
Basic Node Setup
The Vector Motion Blur node receives a 2D image like the IMAGE shown below. A MediaIn or
Loader node containing motion vectors is connected to the Vector’s input. The output
continues the node tree by connecting to another 2D image-processing node or a Merge node.
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