Method for optically sensing marks on objects and apparatus for

Details Method for optically sensing marks on objects and apparatus for Method for optically sensing marks on objects and apparatus for

1989-04-14

1991-06-18

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

382 1, 358101, G06K 900

Patent

active

050254774

ABSTRACT:
In a method for optically sensing markings on objects at a plurality detecting stations (10), at which the objects are transported by means of a transport apparatus through the sensing area of an optical sensing apparatus (20), an object upon non-regular sensing is automatically returned and again transported through the sensing area of the optical sensing apparatus (20) and then after a predetermined number of unsuccessful sensing attempts is automatically represented on a viewing device (30) at a central station (12) for identification of the object and/or a picture of the non-sensed object is stored in a memory (50).

REFERENCES:
patent: 3930141 (1975-12-01), Koyoma et al.
patent: 4493103 (1985-01-01), Yamashita et al.
patent: 4727419 (1988-02-01), Yamada et al.
patent: 4845770 (1989-07-01), Koshida
patent: 4876728 (1989-10-01), Roth
patent: 4912554 (1990-03-01), Neri
patent: 4928230 (1990-05-01), Kawamura et al.

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