PATTERN VERIFICATION APPARATUS, PATTERN VERIFICATION METHOD, AND PROGRAM
First Claim
1. A pattern verification apparatus comprising:
- a correction value calculation unit that generates a plurality of unit area pairs by associating each of a plurality of unit areas generated by dividing a second pattern with each of a plurality of unit areas generated by dividing a first pattern according to a degree of similarity of a pattern, and calculates a correction value, which is suitable for matching or approximating unique feature values of the respective unit areas of the mutually associated unit areas, on the unit area pair basis;
a difference value calculation unit that calculates a difference value indicating a difference between the correction values based on a comparison of the correction values between the unit area pairs that are positioned spatially adjacent to each other; and
a verification evaluation value calculation unit that calculates a verification evaluation value according to a verification result between a condition indicating that patterns belong to mutually different categories and a plurality of difference values calculated by the difference value calculation unit.
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Abstract
When a false matching rate depends on data for evaluation, there is a possibility that the accuracy of pattern authentication could deteriorate in an actual operation. A pattern verification apparatus includes a correction value calculation unit that generates a plurality of unit area pairs by associating each of a plurality of unit areas generated by dividing a second pattern with each of a plurality of unit areas generated by dividing a first pattern according to a degree of similarity of a pattern, and calculates a correction value, which is suitable for matching or approximating unique feature values of the respective unit areas of the mutually associated unit areas, on the unit area pair basis; a difference value calculation unit that calculates a difference value indicating a difference between the correction values based on a comparison of the correction values between the unit area pairs that are positioned spatially adjacent to each other; and a verification evaluation value calculation unit that calculates a verification evaluation value according to a verification result between a condition indicating that patterns belong to mutually different categories and a plurality of difference values calculated by the difference value calculation unit.
24 Citations
18 Claims
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1. A pattern verification apparatus comprising:
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a correction value calculation unit that generates a plurality of unit area pairs by associating each of a plurality of unit areas generated by dividing a second pattern with each of a plurality of unit areas generated by dividing a first pattern according to a degree of similarity of a pattern, and calculates a correction value, which is suitable for matching or approximating unique feature values of the respective unit areas of the mutually associated unit areas, on the unit area pair basis; a difference value calculation unit that calculates a difference value indicating a difference between the correction values based on a comparison of the correction values between the unit area pairs that are positioned spatially adjacent to each other; and a verification evaluation value calculation unit that calculates a verification evaluation value according to a verification result between a condition indicating that patterns belong to mutually different categories and a plurality of difference values calculated by the difference value calculation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A pattern verification method to perform verification of a pattern, comprising:
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generating a plurality of unit area pairs by associating each of a plurality of unit areas generated by dividing a second pattern with each of a plurality of unit areas generated by dividing a first pattern according to a degree of similarity of a pattern, and calculates a correction value, which is suitable for matching or approximating unique feature values of the respective unit areas of the mutually associated unit areas, on the unit area pair basis; a difference value calculation unit of the computer calculates calculating a difference value indicating a difference between the correction values based on a comparison of the correction values between the unit area pairs that are positioned spatially adjacent to each other; and calculating a verification evaluation value according to a verification result between a condition indicating that patterns belong to mutually different categories and a plurality of difference values calculated by the difference value calculation unit. - View Dependent Claims (11, 12, 13, 14)
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15. A non-transitory computer readable medium storing a computer program that causes a computer to perform pattern matching, the computer program causing the computer to:
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generate a plurality of unit area pairs by associating each of a plurality of unit areas generated by dividing a second pattern with each of a plurality of unit areas generated by dividing a first pattern according to a degree of similarity of a pattern, and calculates a correction value, which is suitable for matching or approximating unique feature values of the respective unit areas of the mutually associated unit areas, on the unit area pair basis; calculate a difference value indicating a difference between the correction values based on a comparison of the correction values between the unit area pairs that are positioned spatially adjacent to each other; and calculate a verification evaluation value according to a verification result between a condition indicating that patterns belong to mutually different categories and a plurality of difference values calculated by the difference value calculation unit. - View Dependent Claims (16, 17, 18)
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Specification