In the present invention, {HEAD ~ the place} of {TAIL ~ occurrence} of abnormality is estimated from the momentary positions of moving objects and the moving directions of these objects 
In the present invention , { HEAD ~ the place } of { TAIL ~ occurrence } of abnormality is estimated from the momentary positions of moving objects and the moving directions of these objects
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH