Image pickup apparatus having a mask for defining the extent of

Details Image pickup apparatus having a mask for defining the extent of Image pickup apparatus having a mask for defining the extent of

1991-09-10

1992-10-27

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

358449, 358451, G06K 942

Patent

active

051596482

ABSTRACT:
An image pickup device for viewing an image on a wall surface includes a mask for defining the extent of the focal plane of a viewed image which will be reproduced by a linear image sensor positioned to scan the masked area. Binary data representative of the scanned image is generated and controls a printer which reproduces the masked portion of the image. The size of the masked image is restored to the full size capability of the printer by a data scaling circuit which precludes the need for utilizing a zoom lens in the image pickup device.

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patent: 3644889 (1972-02-01), Skenderoff et al.
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patent: 4615621 (1986-10-01), Allen et al.
patent: 4771473 (1988-09-01), Sugiura
patent: 4888650 (1989-12-01), Abuyama
patent: 4893195 (1990-01-01), Tada et al.
patent: 4896177 (1990-01-01), Kazami et al.
patent: 4905095 (1990-02-01), Yamada
patent: 4905096 (1990-02-01), Moriya
patent: 4912567 (1990-03-01), Nakajima et al.
patent: 4947269 (1990-08-01), Yamada

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