{HEAD ~ The subject image tracking}, performed by mapping {TAIL ~ D} into E is represented by the relationship: ##EQU2## where Mult is a multiplicative constant, and Bias is an additive constant 
{ HEAD ~ The subject image tracking } , performed by mapping { TAIL ~ D } into E is represented by the relationship : # # EQU2 # # where Mult is a multiplicative constant , and Bias is an additive constant
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH