{TAIL ~ This invention} relates to the restoration of {HEAD ~ image signals} from a photosensitive scanning array to provide an absolute output signal level 
{ TAIL ~ This invention } relates to the restoration of { HEAD ~ image signals } from a photosensitive scanning array to provide an absolute output signal level
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH