2011

To:Use:
Mute the Vector Blur contribution of the Blur tool. The other
blurs are still applied (if they are not themselves muted).
Mute
Using the Modulation blur tool to simulate motion blur can be difficult due
to some of the same inherent issues as when trying to simulate depth of field
using the Modulation blur tool;
■ Need to segment out at silhouette edges.
■ Can not deal with anti-aliased images at silhouette edges.
■ Needs the background pixels behind foreground elements.
■ Discontinuity in the motion vector field ends-up as discontinuity in the
blurred image.
■ Need to out-fill motion vectors over transparent region.
These limitations can be worked around, if the 3D department has already
partitioned the image into layers of constant movement. You can then use
the Min. Alpha and Max Radius parameters of the Vectors blur tool to extend
the motion vectors field to get more realistic motion blur effects.
To:Use:
Select at which alpha value to start generating the missing vector in-
formation.
Min Alpha
Increase the radius (in pixels) of the vector field generation. Increase
this value until the artifacts are removed. Note that increasing the Max
Max Radius
Radius value beyond the point where the artifacts are removed will
result in slower processing.
Toggle the vector view.View Vectors
Set the interval between shown vectors. By default, this value is 16 (i.e.
show a vector every 16 pixels). This controls the density of the displayed
vectors.
Interval
Set the display Scale of the shown vectors. By default, this value is 1.0
(i.e. show a vector with its original length). This controls the displayed
Display Scale
length of the vectors. These values only control the player display. They
have no influence on processing.
About Blurs | 397