{HEAD ~ A defocusing mechanism} defocuses {TAIL ~ the first color component signal} based on the filtered first color component signal 
defocuses
{ HEAD ~ A defocusing mechanism } defocuses { TAIL ~ the first color component signal } based on the filtered first color component signal
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH