Method of classifying objects according to shape

Details Method of classifying objects according to shape Method of classifying objects according to shape

1989-10-06

1991-04-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250560, 356386, 209586, G01N 904, B07C 504

Patent

active

050102478

ABSTRACT:
Objects are dropped in succession through a viewing zone, where they are viewed in bright field illumination by three viewers along mutually orthogonal axes, using radiation of different wave-lengths (or viewing in rapid succession). The viewers sense the presented area. The presented areas are compared in a microprocessor in order to obtain a rough determination of the shape of the object. The presented areas can, for example, be summated to obtain a rough determination of the size of the object.

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