obtaining quantized two dimensional image data including an object to be in focus with {HEAD ~ respect} to {TAIL ~ an optical system} by imaging the object through the optical system 
to
obtaining quantized two dimensional image data including an object to be in focus with { HEAD ~ respect } to { TAIL ~ an optical system } by imaging the object through the optical system
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH