{HEAD ~ A subject} is imaged at {TAIL ~ a predetermined time interval} by a plurality of imaging units which obtains a plurality of images having a parallax of a subject viewed from different viewpoints by imaging the subject from different viewpoints 
{ HEAD ~ A subject } is imaged at { TAIL ~ a predetermined time interval } by a plurality of imaging units which obtains a plurality of images having a parallax of a subject viewed from different viewpoints by imaging the subject from different viewpoints
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH