Image acquisition system for sorting packets

Details Image acquisition system for sorting packets Image acquisition system for sorting packets

1997-03-21

2000-09-19

Lee, Richard

Television

Special applications

Manufacturing

348 94, H04N 718

Patent

active

061220019

ABSTRACT:
The system comprises a high resolution camera (1) mounted above a conveyor plane (4) along which objects are displaced, thereby enabling the top face of each object to be observed. The camera (1) is fitted with an objective lens system (5) having a motor-driven focusing system that operates in association with a pickup (8) that produces a signal (S) representative of the vertical profile of the top face of each object relative to the conveyor plane. The profile signal serves to produce positioning references (C) for the focusing mechanism in order to take account of variations in the height of the top face of each object while that object is moving beneath the objective lens system of the camera. Such an image acquisition system is employed to read addresses automatically from postal packets for the purpose of performing automatic sorting.

REFERENCES:
patent: 4700427 (1987-10-01), Knepper
patent: 4920255 (1990-04-01), Gabeler
patent: 5184733 (1993-02-01), Arnarson et al.
patent: 5440648 (1995-08-01), Roberts et al.
patent: 5650813 (1997-07-01), Gilblom et al.
patent: 5668887 (1997-09-01), Parket et al.
patent: 5696591 (1997-12-01), Bilhorn et al.
patent: 5729473 (1998-03-01), Blanc et al.

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