Method and system for monitoring and controlling workpieces

Details Method and system for monitoring and controlling workpieces Method and system for monitoring and controlling workpieces

2007-08-21

2007-08-21

Bella, Matthew C. (Department: 2624)

Image analysis

Applications

Mail processing

C198S340000, C198S444000, C209S552000

Reexamination Certificate

active

11283600

ABSTRACT:
Methods and systems for monitoring the delivery of workpieces to a position by: storing a digital reference image of the position prior to the delivery of workpieces; storing a digital operating image of the position during delivery of workpieces; performing image arithmetic on the reference image and the operating image to produce a digital evaluation image comprised of a plurality of pixels establishing a threshold image condition for the evaluation image that correlates to the existence of an operating condition relevant to the control of the delivery of workpieces; and examining the pixels in the evaluation image to determine whether the threshold image condition is met.

REFERENCES:
patent: 5165520 (1992-11-01), Herve et al.
patent: 5740901 (1998-04-01), Lazzarotti et al.
patent: 6718626 (2004-04-01), Kawada

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