A body part index may be a discrete value or a probability distribution indicating {HEAD ~ the likelihood} that {TAIL ~ a pixel} belongs to two or more different body parts 
A body part index may be a discrete value or a probability distribution indicating { HEAD ~ the likelihood } that { TAIL ~ a pixel } belongs to two or more different body parts
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH