Method and apparatus for identifying objects such as bottles by

Details Method and apparatus for identifying objects such as bottles by Method and apparatus for identifying objects such as bottles by

1981-02-12

1984-07-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250223B, 356376, 209525, G01N 2186

Patent

active

044594879

ABSTRACT:
An object such as a bottle to be identified by its shape is made to travel between a source and an elongated radiation receiver in a direction oblique relative to the travelling direction of the object so as to define, during the travelling, positions in which said receiver presents a segment, the points of which are at least partly occluded by the object, flanked by first and second segments (X and Z) not occluded. The length variations of at least two of the three segments of said receiver are read out for obtaining a characteristic relation of the object shape. Parameters of this relation are compared with corresponding parameters of characteristic relations of the shape of typical objects so as to find out whether the object travelling belongs to the category of one of the typical objects, and if in the affirmative, to which of them. The invention is applicable to the automating refund of deposits on bottles.

REFERENCES:
patent: 4079416 (1978-03-01), Faani et al.

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