The transformed set of intensity data represents at least one transformed gray scale value and {HEAD ~ the transformed set} of {TAIL ~ height data} represents at least one transformed height value 
The transformed set of intensity data represents at least one transformed gray scale value and { HEAD ~ the transformed set } of { TAIL ~ height data } represents at least one transformed height value
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH