Qualification system for printed images

Details Qualification system for printed images Qualification system for printed images

1991-11-08

1993-08-10

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

382 34, 382 64, G06K 903

Patent

active

052356523

ABSTRACT:
A system for automatically determining the quality of various types of printed images uses either a single element optical sensor or a multi-element sensor which may include one or more of an optical, magnetic, thermal or acoustic transducer. A microprocessor is used to store a standard set of images in its memory and measures certain image characteristics of the printed images by automatically comparing the printed images on a background material with the standard images. The microprocessor then causes the system to produce a result of said comparison and to make a decision as to whether each of the printed images satisfy a set of measurements for the standard images. The system has various uses but is particularly useful in the banking business to determine whether newly printed cheques meet the required print standards before releasing the cheques for the use of customers.

REFERENCES:
patent: 3863219 (1975-01-01), Rohrer
patent: 3949363 (1976-04-01), Holm
patent: 4205780 (1980-06-01), Burns
patent: 4490850 (1984-12-01), Nally et al.
patent: 4523330 (1985-06-01), Cain
patent: 4555617 (1985-11-01), Brooks et al.
patent: 4685141 (1987-08-01), Hoque et al.

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