System for identifying flat orthogonal objects using reflected e

Details System for identifying flat orthogonal objects using reflected e System for identifying flat orthogonal objects using reflected e

1993-08-17

1995-06-13

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356371, 382203, G01C 308, G01B 1130, G06K 956

Patent

active

054248230

ABSTRACT:
An improved system for using reflected energy signals sensed by light detecting optics to identify flat surfaces that are orthogonal to the detecting optics. A light source generates a laser light beam, the beam is scanned across a target scene, and a reflected signal is sensed by light detecting optics to produce an electrical representation of the reflected signal. The representation is stored in an array in the form of a plurality of data elements. The data elements are sequentially analyzed by comparing the range of each data element with the ranges of a selected number of neighboring elements, and giving the data element under analysis a corresponding "index." Data elements whose ranges closely match neighboring data elements are assigned higher indices. Neighboring data elements with high indices therefore signify proximate points on a flat surface, which is orthogonal to the detecting optics. The data elements may be further analyzed by distinguishing elements with higher indices from those with lower indices, to highlight the flatter, more orthogonal surfaces.

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