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