A light pattern is projected onto {HEAD ~ the object} to be measured while the cameras capture images of the object from {TAIL ~ several angles} about the object 
A light pattern is projected onto { HEAD ~ the object } to be measured while the cameras capture images of the object from { TAIL ~ several angles } about the object
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH