A characteristic curve interface is provided allowing an operator to place the subject image on {TAIL ~ the characteristic curve} so that {HEAD ~ the image processing system} tracks the location of the subject image on the curve 
A characteristic curve interface is provided allowing an operator to place the subject image on { TAIL ~ the characteristic curve } so that { HEAD ~ the image processing system } tracks the location of the subject image on the curve
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH