selecting n number of {HEAD ~ the second reference color image signals} from {TAIL ~ the m number} of second reference color image signals, the selected n number of the second reference color image signals being nearer in spatial position to the lattice point than non selected ones of the second reference color image signals; and 
from
selecting n number of { HEAD ~ the second reference color image signals } from { TAIL ~ the m number } of second reference color image signals , the selected n number of the second reference color image signals being nearer in spatial position to the lattice point than non selected ones of the second reference color image signals ; and
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH