PROBLEM TO BE SOLVED: To provide a vein authentication device which does not compulsorily require an unreasonable motion to a user and stably obtains template data in which different rotational deviation occurs, and to provide a vein authentication method.SOLUTION: The vein authentication device is provided with an image pickup part which picks up images of the surface of a finger at prescribed time intervals and generates a plurality of vein image-pickup data which are different in imaging range from each other a vein pattern extracting part which extracts vein patterns from the plurality of vein image-pickup data, respectively a rotational quantity computing part which computes rotational directions and rotational quantities of the finger which are accompanied by the respective rotatory motions of the extracted vein patterns with the imaging range of one of the vein patterns as a reference and a registration information selecting part which computes the deviation quantities of the imaging ranges on the basis of the rotational directions and the rotational quantities to determine whether deviation degrees of the imaging ranges are prescribed thresholds or larger, and selects vein patterns to be registered as the templates from among the plurality of vein patterns to make them registration information in the case that the deviation degrees of the imaging ranges are smaller than the prescribed threshold.COPYRIGHT: (C)2010,JPO&INPIT【課題】使用者に無理な動きを強要することなく、安定して異なる回転ズレが生じているテンプレートデータを取得することが可能な静脈認証装置および静脈認証方法を提供する。【解決手段】本発明によれば、指表面を所定の時間間隔で撮像し、撮像範囲が互いに異なる複数の静脈撮像データを生成する撮像部と、複数の静脈撮像データそれぞれから静脈パターンを抽出する静脈パターン抽出部と、一の静脈パターンの撮像範囲を基準として、抽出された静脈パターンそれぞれの回転運動に伴う指の回転方向と回転量とを算出する、回転量算出部と、回転方向および回転量に基づいて撮像範囲のズレ量を算出し、撮像範囲のズレ幅が所定の閾値以上となったか否かを判定し、撮像範囲のズレ幅が所定の閾値未満である場合に、複数の静脈パターンの中から、テンプレートとして登録する静脈パターンを選択して登録情報とする、登録情報選択部と、を備える静脈認証装置が提供される。【選択図】図4
