| http://www.w3.org/ns/prov#value | - Movement and direction can be determined by analyzing the corresponding sequence of displacement vectors, {right arrow over (r)}i((xi+1???xi),(yi+1???yi)) Preferably, a spatial pattern recognition tool, known in the relevant art as a Freeman chain code, is used to determine movement of laser spot 16 and detect the formation of an arrowhead, a box, or other geometric feature.
|
