Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Patent
1992-04-30
1993-06-22
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
2502081, 356444, 382 6, G01N 2186, G06K 900
Patent
active
052218481
ABSTRACT:
Apparatus and a method for digitizing an image having a high dynamic range is disclosed. The apparatus includes a solid-state image sensor having at least two linear charge-coupled device arrays thereon. Means is provided to pass the image across the image sensor to be sensed by all of the arrays in a single pass. A light source is provided to direct light from the image onto the arrays. The arrays are provided with means to adjust the arrays so that at least one array is sensitive to low optical densities and at least one array is sensitive to high optical densities. The output signals from the arrays are feed to analog-to-digital converters to convert the signals therefrom to digital form. The digital signals are fed to a computer which combines the signals into a single signal corresponding to the image.
REFERENCES:
patent: 4479062 (1984-10-01), Kawasaki et al.
patent: 4652735 (1987-03-01), Ishikawa et al.
patent: 4847489 (1989-07-01), Dietrich
patent: 4884200 (1989-11-01), Kimura et al.
patent: 4893345 (1990-01-01), Matsumoto
patent: 4912558 (1990-03-01), Easterly et al.
patent: 4963739 (1990-10-01), Hishinuma
patent: 5034825 (1991-07-01), Ejiri et al.
patent: 5038225 (1991-08-01), Maeshima
patent: 5055667 (1991-10-01), Sayag
patent: 5060081 (1991-10-01), Shimura
patent: 5067163 (1991-11-01), Adachi
patent: 5151588 (1992-09-01), Kiri et al.
Article by R. M. Rangayyan et al, entitled "Expanding the Dynamic Range of X-Ray Videodensitometry Using Ordinary Image Digitizing Devices" published in Applied Optics, vol. 23, No. 8, Sep. 84, pp. 3117-3120.
Eastman Kodak Company
Messinger Michael
Nelms David C.
Woods David M.
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