PATTERN IDENTIFICATION METHOD, REGISTRATION DEVICE, VERIFICATION DEVICE AND PROGRAM
First Claim
1. A pattern identification method comprising:
- a first step of calculating, for each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, two or more form values representing the shape of the pattern;
a second step of calculating the center of the distribution of the two or more form values and a value representing the degree of the spread from its center;
a third step of calculating a distance between the two or more form values of a pattern obtained from those to be registered or to be compared with registered data and the center of the distribution of the two or more form values using the value; and
a fourth step of disposing of the pattern if the distance is greater than a predetermined threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
A pattern identification method and other things to improve the accuracy of authentication are proposed. For each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, two or more form values representing the shape of the pattern are calculated; the center of the distribution of the two or more form values and a value representing the degree of the spread from the center are calculated; a distance between the two or more form values of a pattern obtained from those to be registered or to be compared with registered data and the center of the distribution of the two or more form values is calculated with the use of the value representing the degree of the spread from the center; the pattern is disposed of if the distance is greater than a predetermined threshold.
10 Citations
17 Claims
-
1. A pattern identification method comprising:
-
a first step of calculating, for each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, two or more form values representing the shape of the pattern; a second step of calculating the center of the distribution of the two or more form values and a value representing the degree of the spread from its center; a third step of calculating a distance between the two or more form values of a pattern obtained from those to be registered or to be compared with registered data and the center of the distribution of the two or more form values using the value; and a fourth step of disposing of the pattern if the distance is greater than a predetermined threshold. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A registration device comprising:
-
storage means for storing, for each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, the center of the distribution of two or more form values representing the shape of the pattern and a value representing the degree of the spread from the center; calculation means for calculating a distance between the two or more form values of a pattern obtained from those to be registered and the center of the distribution of the two or more form values stored in the storage means using the value; and registration means for disposing of the pattern if the distance is greater than a predetermined threshold while registering the pattern in a storage medium if the distance is within the threshold. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A verification device comprising:
-
storage means for storing, for each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, the center of the distribution of two or more form values representing the shape of the pattern and a value representing the degree of the spread from the center; calculation means for calculating a distance between the two or more form values of a pattern obtained from those to be registered and the center of the distribution of the two or more form values stored in the storage means using the value; and verification means for disposing of the pattern if the distance is greater than a predetermined threshold while comparing the pattern with registered data registered in a storage medium if the distance is within the threshold. - View Dependent Claims (12, 13, 14, 15)
-
-
16. A program causing a computer that stores, for each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, the center of the distribution of two or more form values representing the shape of the pattern and a value representing the degree of the spread from the center, to execute:
-
a first process of calculating a distance between the two or more form values of a pattern obtained from those to be registered and the center of the distribution of the two or more form values stored in the storage means using the value; and a second process of disposing of the pattern if the distance is greater than a predetermined threshold while registering the pattern in a storage medium if the distance is within the threshold.
-
-
17. A program causing a computer that stores, for each of living body'"'"'s patterns obtained from a plurality of living body'"'"'s samples, the center of the distribution of two or more form values representing the shape of the pattern and a value representing the degree of the spread from the center, to execute:
-
a first process of calculating a distance between the two or more form values of a pattern obtained from those to be registered and the center of the distribution of the two or more form values stored in the storage means using the value; and a second process of disposing of the pattern if the distance is greater than a predetermined threshold while comparing the pattern with registered data registered in a storage medium if the distance is within the threshold.
-
Specification