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