US 7,606,396 B2Granted

Multimodal biometric platform

AssigneeImageWare Systems, Inc.

InventorsJames S. Miller, William Frederic Willis, Johann Herbert Lau, Daniel Dlab

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Abstract

A multimodal biometric identification or authentication system includes a plurality of biometric clients. Each of the biometric clients may include devices for capturing biometric images of a plurality of types. The system includes a router in communication with the biometric clients. The router receives biometric images from, and returns biometric scores or results to, the biometric clients. The system includes a plurality of biometric matching engines in communication with the router. Each biometric matching engine includes multiple biometric processors. Each biometric processor is adapted to process biometric data of a particular type. The biometric matching engines transmit and receive biometric data to and from the router.

Claims11

Dependent claims

A method of producing a score in a multimodal biometric system comprising:

forming a set of enrolled biometric data records, each enrolled biometric data record comprising a record identifier, an enrolled biometric template of a first type and an enrolled biometric template of a second type;
comparing a probe biometric template of said first type to enrolled biometric templates of said first type to produce a set of first scores;
saving in a match set biometric data records wherein the first score for the data record passes a first biometric threshold;
comparing a probe biometric template of said second type to biometric templates of said second type in said match set to produce a set of second scores;
saving biometric data records in said match set wherein the second score for the data record passes a second biometric threshold;
comparing the probe biometric template of the first type to saved biometric templates of the first type in the match set to produce another set of first scores;
removing from the match set biometric data records wherein the another first score for the data record passes another first biometric threshold;
comparing the probe biometric template of the second type to saved biometric templates of the second type in the match set to produce another set of second scores;
and
removing from the match set the biometric data records wherein the another second score for the data record passes another second biometric threshold, wherein:
the another first biometric threshold is more restrictive than the first biometric threshold;
and
the another second biometric threshold is more restrictive than the second biometric threshold.

10 more elements

A system for producing multimodal biometric scores, the system comprising:

a database for storing biometric data records, each biometric data record comprising a record identifier, a biometric template of a first type and a biometric template of a second type;
and
a biometric matching engine that receives biometric images, converts the biometric images to the biometric templates of respective types, and creates probe biometric templates of respective types, the biometric matching engine comprising:
a first biometric recognition unit adapted to run a first application, wherein:
the probe biometric template of the first type is compared to the biometric templates of the first type to produce a set of first scores,
if the first score for a biometric data record passes a first biometric threshold, the biometric data record is saved in a match set in the database;
a second biometric recognition unit adapted to run a second application, wherein:
for each biometric data record saved in the match set, the probe biometric template of the second type is compared to the biometric templates of the second type to produce a set of second scores, and
if the second score for a biometric data record passes a second biometric threshold, the biometric data record is removed from the match set in the database, wherein:
if the first score for the biometric data record passes another first biometric threshold, the biometric data record is removed from the match set in the database,
the another first biometric threshold is more restrictive than the first biometric threshold,
if the second score for the biometric data record passes another second biometric threshold, the biometric data record is removed from the match set in the database, and
the another second biometric threshold is more restrictive than the second biometric threshold.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/927,476Filed 29 Oct 2007 · division
Priority: 16 Nov 2004
Published: US 2008/0049983 A128 Feb 2008
Granted: 20 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

G06V 40/10
Recognition of biometric, human-related or animal-related patterns in image or video data: human or animal bodies, e.g. vehicle occupants or…
G06V 10/95
Hardware or software architectures specially adapted for image or video understanding: structured as a network, e.g. client-server architectures
G06V
Image and video recognition

Family

Application10/991,352Parent of this division · filed 16 Nov 2004
US 2008/0049983 A1Pre-grant publication · published 28 Feb 2008
US 7,298,873 B2Parent of this division
US 2006/0104485 A1Published application
US 7,606,396 B2This patent

From the US filing history. Foreign family members aren’t listed.