Fingerprint system
First Claim
1. A fingerprint enrollment method comprising the steps of obtaining an image of a fingerprint, selecting a first portion of the image, which has a predetermined relationship to a reference point, and storing a recognition template, which comprises said first portion of the image.
1 Assignment
0 Petitions
Accused Products
Abstract
A fingerprint identification/verification system using bitmaps of a stored fingerprint to correlate with a bitmap of an input fingerprint, wherein an accurate reference point is located and selected two-dimensional areas in the vicinity of the reference point of the input image of the fingerprint are correlated with stored fingerprint recognition information to determine if the input fingerprint image and the stored fingerprint recognition information are sufficiently similar to identify/verify the input fingerprint.
52 Citations
38 Claims
- 1. A fingerprint enrollment method comprising the steps of obtaining an image of a fingerprint, selecting a first portion of the image, which has a predetermined relationship to a reference point, and storing a recognition template, which comprises said first portion of the image.
-
9. The fingerprint enrollment method according to claim 8, wherein said step of selecting a reference point comprises selecting the center point of the first portion of the image.
-
14. A fingerprint enrollment method, comprising the steps of obtaining an image of a fingerprint, selecting a plurality of portions of the image, and storing a recognition template which comprises said plurality of portions of the image.
- 20. A fingerprint enrollment method, comprising the steps of obtaining an image of a fingerprint, searching the image for locations of fingerprint features, selecting at least one portion of the image, and storing a recognition template comprising the fingerprint locations and the at least one portion of the image.
-
23. A fingerprint matching method comprising the steps of obtaining a sample image of a fingerprint, correlating an image portion of a recognition template, which comprises at least one portion of another image, with at least part of the sample image to generate a correlation result, and determining whether the correlating result exceeds a predetermined matching requirement.
- 31. A fingerprint matching method, comprising the steps of obtaining a sample image of a fingerprint, searching the sample image to obtain locations of fingerprint features, correlating the fingerprint feature locations of the sample image with fingerprint feature locations of a recognition template to obtain a first correlation result, determining a sample image reference point on the basis of the first correlation result, selecting a sample image portion in a predetermined relation to the sample image reference point and correlating the sample image portion with an image portion of the recognition template to obtain a second correlation result and determining whether the second correlation result exceeds a matching requirement.
-
33. A computer-readable medium having stored thereon a computer program, comprising instructions for causing a computer to carry out a fingerprint enrollment method comprising the steps of selecting a first portion of an image of a fingerprint, said first portion having a predetermined relationship to a reference point, and storing a recognition template, which comprises said first portion of the image.
-
34. A computer-readable medium having stored thereon a computer program, comprising instructions for causing a computer to carry out a fingerprint enrollment method comprising the steps of selecting a plurality of portions of an image of a fingerprint, and storing a recognition template which comprises said plurality of portions of the image.
-
35. A computer-readable medium having stored thereon a computer program, comprising instructions for causing a computer to carry out a fingerprint matching method comprising the steps of correlating an image portion of a recognition template, which comprises at least one portion of another image, with at least part of a sample image of a fingerprint to generate a correlation result, and determining whether the correlating result exceeds a predetermined matching requirement.
-
36. A fingerprint processing device comprising a sensor for sensing a fingerprint;
- a processor for receiving an image of the fingerprint sensed by the sensor and for selecting a first portion of the image, said first portion having a predetermined relationship to a reference point, and a storage device for storing a recognition template, which comprises said first portion of the image.
-
37. A fingerprint processing device comprising a sensor for sensing a fingerprint;
- a processor for receiving an image of the fingerprint sensed by the sensor and for correlating an image portion of a recognition template, which comprises at least one portion of another image, with at least part of the sample image to generate a correlation result, and determining whether the correlating result exceeds a predetermined matching requirement.
-
38. A fingerprint recognition template for a fingerprint processing system comprising a first portion of an image of a fingerprint, further portions of the image and relative location information corresponding to the location of each of the further image portions with respect to a predetermined reference location defined by the first image portion.
Specification