Method and system for recognizing behavior of object

Details Method and system for recognizing behavior of object Method and system for recognizing behavior of object

1995-04-12

1997-10-07

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

2502062, 340555, 3561411, 3561521, G01C 308, G01C 2102, G08B 1318, G08B 1126

Patent

active

056754043

ABSTRACT:
A method includes steps of measuring a distance in a straight line to an object within a target area by means of a range finder; storing object data indicative of the measured distance in a memory; repeating the above steps a plurality of times; and comparing n-th object data with (n-1)-th object data to detect whether the object changes in distance to the range finder; whereby recognizing a behavior of the object, and a system includes; a range finder for measuring a distance in a straight line to an object within a target area to output distance data corresponding to the measured distance means for periodically sampling the output distance data; a memory for storing the sampled distance data as object data and means for comparing n-th object data with (n-1)-th object data to output a judging signal representing whether the object changes in distance to the range finder when a difference between both the object data exceeds a predetermined value.

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