Multimodal biometric platform
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.
1. 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.
2. The method of producing the score in the multimodal biometric system according to claim 1 , further comprising a step of enrolling the biometric data records, wherein captured biometric images are converted into the enrolled biometric templates, and the probe biometric templates are created.
3. The method of producing the score in the multimodal biometric system according to claim 2 , wherein demographic data of an individual associated with the record identifier is received.
4. The method of producing the score in the multimodal biometric system according to claim 3 , wherein the demographic data includes at least one of the individual's name, sex, height, weight, hair color, or eye color.
5. The method of producing the score in the multimodal biometric system according to claim 1 , wherein the types comprise two or more of hand geometry, finger print, ten finger live scan, iris, palm, full hand, signature, ear, finger vein, retina, face, DNA or voice.
6. The method of producing the score in the multimodal biometric system according to claim 1 , wherein an order in which the comparing limitations are performed is pre-determined and stored in the database.
7. 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.
8. The system for producing multimodal biometric scores according to claim 7 , further comprising:
a client device that includes:
a first capture device for capturing the biometric images of the first type, and
a second capture device for capturing the biometric images of the second type; and
a router that receives the biometric images from the client device, transmits the biometric images to the biometric matching engine, receives results from the biometric matching engine, and sends the results to the client device.
9. The system for producing multimodal biometric scores according to claim 7 , further comprising:
a demographic database for storing demographic data of an individual associated with the record identifier, wherein the demographic data comprises at least one of the individual's name, sex, height, weight, hair color, or eye color.
10. The system for producing multimodal biometric scores according to claim 7 , wherein the types comprise two or more of hand geometry, finger print, ten finger live scan, iris, palm, full hand, signature, ear, finger vein, retina, face, DNA or voice.
11. The system for producing multimodal biometric scores according to claim 7 , wherein the three removals from the matched set in the database are performed in succession.