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