{HEAD ~ A processing device} includes a correction table memory which stores data regarding a relationship between a predetermined number of discrete points and {TAIL ~ an equal number} of corrected points 
{ HEAD ~ A processing device } includes a correction table memory which stores data regarding a relationship between a predetermined number of discrete points and { TAIL ~ an equal number } of corrected points
HEAD 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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH