Image input device

Details Image input device Image input device

1989-03-22

1990-02-27

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

356 71, G06K 932

Patent

active

049052934

ABSTRACT:
An image input device for optically sensing a fingerprint or like pattern to convert it to an electrical signal is disclosed. A guide is provided on a contact surface, or reflective surface, of a prism to orient the lengthwise direction of the pattern of an object parallel to a ridge, which is defined by an incidence surface and a wayout surface of the prism.

REFERENCES:
patent: 3482498 (1969-12-01), Becker
patent: 3677623 (1972-07-01), Hall et al.
patent: 3716301 (1973-02-01), Caulfield et al.
patent: 3947128 (1976-03-01), Weinberger et al.
patent: 4120585 (1978-10-01), De Palma et al.
patent: 4455083 (1984-06-01), Elmes

Affiliated with

Also associated with

Rating

Image input device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image input device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image input device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-179822