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