8

Camera Track e r: Po sition Data Rollout 657
Error Codes
Me—Match error threshold exceeded.
Vd—Color variance delta threshold exceeded.
Jd—Jump delta threshold exceeded.
In each case, the n umber following the code is the
actual error measure. You can see how the er ror
measure compares to the current thresholds in
the Error Thresholds rollout. If you adjust the
thresholds in this rollout and then rerun the Check
Status again, the list is refilled with those points
in the tracking that exceed the newly adjusted
thresholds.
Next—Moves to the next error in the l ist.
Cle ar—Clears an entry out of the list.
Ca mera Track er: Position Data
Rollout
Utilities panel > Utilities rollout > More button > Utilities
dialog > Camera Tracker > Position Data rollout
Inter face
Apply to group
Contains three radio buttons that control which
trackers will be operated on by the action buttons
below it.
Selected Tracker—Operates on the currently
selected tracker.
Enabled Trackers—Operates on a l l the enabled
trackers in the Motion Trackers rollout.
All—Operates on all the trackers.
Cle ar to En d —Clears the position data in the
trackers specified in the Apply To group from the
current Movie Stepper frame onward. This is
useful for clearing out and redoing a portion of
the tracking.
Clea r All—Clears all the position data in the
trackers specified in the Apply To group.
Show Data—Opens a text w indow that displays
the position data for the trackers specified in the
ApplyTobox. Thedisplayincludessometitle
lines showing the t racker number and associated
tracking object followed by comma separated
columns of numbers for the position data one row
per frame. All rows contain at least three columns:
frame number, X position, Y position. Keyframe
frames also cont ain another eight columns:
featu re b ounds left, top, right, and bottom, and
Searchboundsleft,top,right,andbottom. The
coordinates in decimal pixels show any subpixel
tracking as decimal fractions.
The text window is a standard MAXScript source
editor and y ou can copy, edit or save the contents
to file.
Expor t—Creates a text file containing position data
for the trackers specified in the Apply To group.
Pressing this button displays a st a ndard Save File
dialog asking for the location and name of the
file you’re creating. The file typ e defau lts to
.csv ,
thecomma-separatedvalueformatreadableby
Excel and other data processing applications. The
format of the data is exactly as for the Show Data
command describ ed previously.