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