2D Camera View
The 2D view shows any IR light picked up by the camera and above the camera's threshold setting. Look in the 2D view to verify:
Only marker lights are shown. If there is interfering light and the light source can't be blocked or removed:
You can remove and restore tracked regions by selecting the remove (-) and add (+) buttons and dragging a square in the 2D View. Red stippled areas indicate regions that are ignored by the PPT system. This is the recommended method for small points/areas of static interfering light. Remove the least amount of area possible so that marker tracking is not affected.
Filter out interfering light by adjusting camera settings.
Marker lights are stable when in the camera's line of sight.