Either linear or non linear transformations are utilized, based on the match between 3D and gray values, and {HEAD ~ other conditions} which determine {TAIL ~ the confidence level} of the information 
Either linear or non linear transformations are utilized , based on the match between 3D and gray values , and { HEAD ~ other conditions } which determine { TAIL ~ the confidence level } of the information
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH