Abstract: A tracking system includes an interface, a memory, and one or more processors. The interface is configured to receive images acquired by a plurality of video cameras installed in a region. The memory is configured to store calibration data that specifies geometrical positions and orientations of respective Fields-Of-View (FOVs) of the cameras. The one or more processors are configured to, based on the images and the calibration data, distinguish between multiple individuals present in the region, and track geometrical paths taken by the individuals in the region.