For image registration, the described architecture uses {TAIL ~ block based comparisons} of {HEAD ~ image blocks} of a captured image relative to blocks of another reference image to support image registration on a block by block basis 
For image registration , the described architecture uses { TAIL ~ block based comparisons } of { HEAD ~ image blocks } of a captured image relative to blocks of another reference image to support image registration on a block by block basis
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH