Apparatus to record epidermal topography

Details Apparatus to record epidermal topography Apparatus to record epidermal topography

1991-02-26

1993-03-16

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

356 71, G06K 900

Patent

active

051951452

ABSTRACT:
Apparatus and methods to accurately scan and record the skin surface topography. More particularly, the present invention has embodiments which can accurately scan fingerprints. Embodiments described each utilize a support surface penetrated by one or more openings. Skin surfaces to be scanned are rested on the supporting surface and are caused to be moved relative to the openings. Means to scan the skin surface topography as observed through the openings are located on the opposite side of the supporting surface from the skin surfaces to be scanned.

REFERENCES:
patent: 3614737 (1971-10-01), Sadowsky
patent: 3804524 (1974-04-01), Jocoy et al.
patent: 3942153 (1976-03-01), Balko et al.
patent: 4385831 (1983-05-01), Ruell
patent: 4569080 (1986-02-01), Schiller
patent: 4784484 (1988-11-01), Jensen
patent: 4843377 (1989-06-01), Fuller et al.

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