Method and apparatus for performing a comparison of given patter

Details Method and apparatus for performing a comparison of given patter Method and apparatus for performing a comparison of given patter

1980-12-24

1983-11-08

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

350 64, 356 71, 356388, 382 32, 382 65, G06K 900

Patent

active

044146841

ABSTRACT:
A method and an apparatus are proposed for performing a comparison of patterns of invariable form, especially fingerprint pattern. By the application of a finger on a prism within a beam of light, a latent picture of fingerprint lines is obtained which is optically compared with a copy of the same fingerprint stored in memory or located on a card. After conversion into an electrical variable, an identification pulse results which is subjected to at least one test criterion and compared with a threshold value. Preferably the testing of a master symbol located on the inserted card is effected at the same time, comparing this with a copy of the same stored in memory within the appliance. If the test criteria show an agreement of the fingerprint with the fingerprint copy and/or of the master symbol with the copy of the master symbol then a positive assessment is effected, and access to a building, for instance, is furnished.

REFERENCES:
patent: 3202761 (1965-08-01), Bibbero
patent: 3383657 (1968-05-01), Claassen et al.
patent: 3398558 (1968-08-01), Benenati
patent: 3511571 (1970-05-01), Ogle
patent: 3694240 (1972-09-01), Miller et al.
patent: 3928842 (1975-12-01), Green et al.
patent: 4048618 (1977-09-01), Hendry
patent: 4253086 (1981-02-01), Szwarcbier
Rosell, "Prism Scanner," Journal of the Optical Society of America, vol. 50, #6, Jun. 1960, pp. 521-526.

Affiliated with

Also associated with

Rating

Method and apparatus for performing a comparison of given patter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for performing a comparison of given patter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for performing a comparison of given patter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2013324