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