Filtering illumination for image lift

Details Filtering illumination for image lift Filtering illumination for image lift

1992-04-28

1993-11-02

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

382 1, 382 7, 2502081, G06K 900

Patent

active

052590437

ABSTRACT:
Arrangement for lifting image of checks, with Xenon lamp, Fluorescent lamp or like source of stable-wavelength-output and CCPD Camera means selected to exhibit "close-to-human" spectral response plus a photopic filter, disposed upstream of the Camera and adapted to shift its received image-light spectrum in the direction of that which is optimal for the human-eye.

REFERENCES:
patent: 3963330 (1976-06-01), Bonink
patent: 4563771 (1986-01-01), Gorgone
patent: 5063461 (1991-11-01), Copenhaver
patent: 5155776 (1992-10-01), Concannon

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