WorldViz PPT-E, Руководство по эксплуатации, Страница: 9 / 163

3
PRE-TRACKING CHECKLIST
Follow the steps below if:
 The lighting conditions in the room have changed
 A camera has moved
 You want to ensure high quality tracking
1. Check the cameras
Place the calibration rig in the center of your tracked space. Verify that all
cameras see each of the four lights, one at a time. Verify that no camera
identifies other light sources (the cross hair in each camera should never flicker
to any other spot). Infra-red light contamination can cause poor tracking, and
will prevent calibration. To solve this issue, either block the contaminating light
or crop out portions of the camera view. See
Preparing your tracking
workspace .
2. Calibrate
The slightest movement of any of the cameras is enough to introduce severe
tracking distortion. If cameras have been touched or tracking is abnormal,
calibrate. To ensure accuracy for important data collection,
Calibrate .
3. Tune
Before using PPT for a project, always press the Tune button and follow the
instructions.
Tuning tells PPT where the important tracking area is and whether
you are tracking fast or slow motion. If you change a 2D or 3D plugin, you
should Tune PPT again.
4. Verify 3D data
Move a marker through the tracked space and watch a trace of the motion in
your
3D view . If traces are not turned on, right-click in the 3D View and enable
Markers / History. The dot lines should not have any large gaps and will appear
a steady, jitter free line.
Troubleshoot if the traces are unusual.
5. Adjust number of markers
Verify that PPT is looking for the number of markers you intend to track.
6. Send data
Press the "Talk" button to start sending data. Confirm that your plugins are
configured to send data over the appropriate channel for your setup. (The
"Talk" mode is automatically turned on when PPT Studio is in 3D view and it
can also be turn off under 2D view tab)
NOTE: Reload factory settings
If you're having difficulty finding user interface functions as discussed in this
documentation, you should select "Load factory settings" under the File menu. This