3xLOGIC VIGIL Server - Manual (Page 100)

Obstacle Settings
Obstacle Settings are used to show sections of the image that are blocked by permanent, narrow objects between the
area monitored and the camera. When obstacle masks are configured, the analytics engine understands that an object
will disappear behind this area and then reappear on the other side. In some situations, light fixtures, poles, or signs
could be obstacles in an image. Click to highlight permanent obstacles. The analytics engine will track objects that dis-
appear on one side of the obstacle and then appear on the other side.
Once the sign is masked out, analytics knows to that obstacles
can move under the checkout sign to the other side.
The red area shows where an obstacle mask is required.
Black arrows show the potential movement of objects through
the image once the obstacle mask is configured.
3xLOGIC's VIGIL Server 7.1 User Guide
Pg. 96