Biometric authentication device, biometric authentication method and computer program for biometric authentication, and biometric information registration device
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United States of America Patent
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Oct 22, 2013
Grant Date -
Jun 6, 2013
app pub date -
Jan 29, 2013
filing date -
Jul 29, 2010
priority date (Note) -
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Abstract
A biometric authentication device including: a biometric information acquiring unit which generates a biometric input image representing user's biometric input information; and a processing unit. The processing unit extracts, for each block obtained by dividing the biometric input image, a local feature representing the geometric feature of the biometric input information; classifies the plurality of blocks into a plurality of groups by blocks with a similar local feature; extracts a second group feature representing feature of biometric input information for each group; calculates the degree of difference between each of registered biometric information and the biometric input information based on a first group feature for each group set for a registered biometric image representing the registered biometric information and the second group feature; selects a prescribed number of registered biometric information based on the degree of the difference; and matches the selected registered biometric information with the biometric input information.
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