| http://www.w3.org/ns/prov#value | - In this state, the authentication apparatus 1 determines whether the person to be authenticated is a registrant based on the similarity (cross-correlation coefficient, etc.) between the shape of veins included in the vein image (pattern image) to be authenticated whose aspect ratio has been changed and shape of veins included in the registration vein image (pattern image) whose aspect ratio has be
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