8

660 Chapter 12: Animation
Inter face
ChannelToSmoothgroup
Letsyouchoosewhichparameterorsetof
parameters to smooth. You can choose to smooth
the entire Rotation or all the Position tracks at
once, or y ou can smooth individual parameters
or axes.
Rotation—Pan, Tilt, and Roll.
Positi on—Dolly, Truck-H, and Truck-V.
FOV—Camera FOV (field-of-view).
Pan—Rotation about the local camera Z axis.
Tilt—Rotation about the local camera X axis.
Roll—Rotation about the local camera Y axis.
Dolly—Movement along the loca l camera Y axis.
Truck-H —Movement along the local camera X axis.
Truck-V—Movement a long the local camera Z axis.
Smooth Type group
Straight line average—Causes Move smoothing
to generate a straight line average for each of the
selectedparameters.Thisisusefulwhenyouknow
a p arameter is fixed, but don’t know its actual
value. Examples might include field-of-view or
vertical position. Use the camera matcher to
initially estimate the parameter, then construct a
straight line average fit and rematch the remaining
parameters
Low pass f ilter—Causes Move smoothing to
apply a low-pass filter to the selected p arameters,
eliminating high-frequency noise.
Smooth a mount—Implements smoothing using a
Gaussian low-pass filter whose width and variance
are controlled by the Smooth Amount spinner.
Increase this value to increase the smoothing.
Smooth Range group
Controls the range of f r ames over which the
smoothing will be performed.
Match-Move R ange—Applies the smoothing
to the range of animation frames specified in
the Match Move rollout. This allows you to
break up a match-moving job into several fr ame
ranges. Use this to isolate and experiment on a
troublesome range of frames, without disturbing
other satisfactory frames.
All Frames—Applies the smoothing to all the
keyframes in the selected parameters.
Rema tch Af t er S mooth—Controls w hether a
compensating match-move is performed after
the filtering. If this is turned on, the parameters
that were smoothed are disabled in the Match
rollout and another match-move is per formed.
Performing this rematch again is advised because
it adjusts the other c amera parameters to
compensate for the smoothing and of ten results
in a smoother estimation for the unsmoothed
parameters.