| 主权项 |
1. A biometric authentication apparatus comprising:
an image shooting unit to capture a verification vessel image of a person to be authenticated; an authentication unit to verify verification vessel position information of the verification vessel image of the person to be authenticated captured by the image shooting unit against registered vessel position information of a registered vessel image registered in advance, and to perform authentication using vessel size information of the registered vessel image registered in advance when the verification vessel position information is not identical with the registered vessel position information; a histogram generation unit to generate a registered vessel size histogram according to vessel size information of a plurality of component points of a plurality of registered vessel images registered in advance, and to generate a verification vessel size histogram according to vessel size information of a plurality of component points of the verification vessel image to be verified; and a candidate selection unit to calculate a similarity between the verification vessel size histogram and the plurality of registered vessel size histograms, and to select a registrant indicating a similarity that is equal to or higher than a certain value, wherein the authentication unit verifies the registered vessel position information of the registrant selected by the candidate selection unit against the verification vessel position information of a person to be authenticated. |
