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