In {TAIL ~ some embodiments}, synthesized pixels that do not correspond to a body part may be given a different type of {HEAD ~ index} 
In { TAIL ~ some embodiments } , synthesized pixels that do not correspond to a body part may be given a different type of { HEAD ~ index }
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD