{HEAD ~ The second integrated frame} is divided by the first integrated frame to yield {TAIL ~ a range coded pixel intensity image} 
{ HEAD ~ The second integrated frame } is divided by the first integrated frame to yield { TAIL ~ a range coded pixel intensity image }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL