From the image information, 2D operators are determined for generating 130 3D point samples 3, and the image information 2 is then associated with {HEAD ~ corresponding 3D point samples} 3, preferably stored as {TAIL ~ a hierarchy} 20 in a memory 
From the image information , 2D operators are determined for generating 130 3D point samples 3 , and the image information 2 is then associated with { HEAD ~ corresponding 3D point samples } 3 , preferably stored as { TAIL ~ a hierarchy } 20 in a memory
OTH OTH OTH OTH OTH OTH 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 HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH