The movement information acquiring section acquires movement information showing {HEAD ~ spatial distribution} of the magnitude of a movement in {TAIL ~ the real space} of an image pickup part of a detected body 
The movement information acquiring section acquires movement information showing { HEAD ~ spatial distribution } of the magnitude of a movement in { TAIL ~ the real space } of an image pickup part of a detected body
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH