| 摘要 |
A personal authentication method and device capable of creating iris information enabling personal authentication even if the iris image shows light reflection. The personal authentication device comprises an imaging section for imaging an eye of the user, an iris code generating section for generating an iris code from the captured image, a determining section for comparing the iris code with a registered iris code and determining whether or not the iris code agrees with the registered code, a control section for giving an instruction to retry imaging when there is no match, a guiding section for guiding the user so that the position where there is light reflection in the iris in retry-imaging changes, an average calculation image creating section for extracting an iris image from images, if the iris code generated from the image captured by retry-imaging disagrees with the registered iris code and creating an average calculation image produced by averaging the pixel values of the iris image, and an iris code generation instruction section for instructing the iris code generating section to generate an iris code from the average calculation image.
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