In the embodiment illustrated in FIG 1, the video data sources 14 are video cameras of {HEAD ~ the type} generally used to acquire {TAIL ~ images} for machine vision systems 
generally used to acquire
In the embodiment illustrated in FIG 1 , the video data sources 14 are video cameras of { HEAD ~ the type } generally used to acquire { TAIL ~ images } for machine vision systems
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH