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