Arrangement and procedure for determining the authorization of i

Details Arrangement and procedure for determining the authorization of i Arrangement and procedure for determining the authorization of i

1988-09-13

1991-02-19

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

235380, 235382, 34082534, 356 71, 382 2, G06K 900

Patent

active

049950860

ABSTRACT:
The arrangement uses a portable data carrier in the form of a plastic card, which has several magnetic tracks for containing data. The stored data can consist of the degree of correlation between a fingerprint of the authorized individual and a stored and selected reference signal image and the code number of this reference signal image. Further, use of a so-called characteristic number is possible. A fingerprint detection terminal with a sensor contains a memory in which the selected reference signal image is stored. The sensor compares the actual fingerprint of an individual to be checked with the corresponding reference signal image identified on the plastic card and stored in the fingerprint detection terminal. The thus determined degree of correlation is, in turn, compared to the degree of correlation stored on the plastic card and, as a function of the result of this comparison, an appropriate decision signal is released. The data are written on the plastic card in such a way, that based on the data alone no unambiguous conclusion concerning the identity of the individual is possible.

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