8

Motion Capture Conversion Parameters Dialog 925
the ground plane. Use this when filtering motions,
such as hopping or pitching a baseball, in which
a foot might come off the ground and remain
stationary, but its position is not intended as a
footstep.
•
Tolerance—Valueisapercentageofleglength.
•
Fr o m Z Lev e l —Set a Z value (ground).
Flat ten Footsteps to Z=0—Moves extracted
footsteps to Z =0. Use this to flatten out minor
differences in the height of the extracted footsteps.
Load Frames group
Start—Start import ing at this frame. Default is
frame 0, the first frame.
End—Stop importing at this frame. Default is the
last frame of the clip.
Loop—Loopthedatabythevaluesethere.
This is relative. Succeeding lo ops start where the
previous loop left off. The clips are not blended
andmayrequireeditingunlesstheoriginalclip
was designed to loop.
Use this for clips designed to loop.
Note: This often works best if Footstep Extraction
is tuned off.
Key Re duction Settings group
Key reduc tion keeps the original motion intact
and intelligently filters out more than 80 percent
of the keys in the motion-capture file, making
the process of altering the biped animation much
simpler.
Use the Tolerance and Minimum Key Spacing
settings to fine-tune key reduction for a specific
track (body part). Specify whether or not to filter
atrackintheFiltercolumn.
These settings are available only if Conversion is
set to Use Key Reduction.
Tolerance—Sets the maximum angular or
positional deviation for a track.
Values are in units of translation for position
tracks, and in degrees for rotation tracks.
Minimum K ey Spacing—Sets the minimum number
of frames b etween keys.
Tolerance is computed first, then Minimum Key
Spacing computes further key reduction.
AMinimumKeySpacingvalueof10forthehead
track ensures that no two ke ys are closer than 10
frames for this track.
Filter—Turnofftopreventfilteringofthemotion
capture data into a track. When this is off, there is
no key reduction for the track.
Set A ll—Forces a ll tracks to the values set in these
fields.