On subsequently rendering, the point samples are modified continuously according to {HEAD ~ an updating} of {TAIL ~ the 3D primary video data} 
of
On subsequently rendering , the point samples are modified continuously according to { HEAD ~ an updating } of { TAIL ~ the 3D primary video data }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL