{HEAD ~ The sub images} are readily combined into a spatially correlated image of {TAIL ~ the scene} 
{ HEAD ~ The sub images } are readily combined into a spatially correlated image of { TAIL ~ the scene }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL