PROBLEM TO BE SOLVED: To provide a three-dimensional information generation device, a biometric authentication device and a three-dimensional image generation device capable of reducing the burden of calculation for obtaining three-dimensional information based on an image captured by an imaging device. A three-dimensional information generator The present invention, a biometric authentication device or a three-dimensional image generator, includes a projection device 3 that irradiates a near-infrared optical pattern and an image pickup device 5 that can receive near-infrared light. The facial area specifying unit 102 that detects the facial organs and specifies the facial area based on the image of the image to be imaged captured by the image pickup device 5, and the image pickup imaged by the image pickup device 5 in a state of irradiating the optical pattern. It includes a three-dimensional information acquisition unit 60 that generates three-dimensional information about a portion of the target near-infrared image corresponding to the portion of the face specified by the face region identification unit 102. [Selection diagram] Fig. 11【課題】撮像装置で撮像された画像に基づいて３次元情報を得る計算の負担を軽減できる３次元情報生成装置、生体認証装置および３次元画像生成装置を提供する。【解決手段】３次元情報生成装置本発明、生体認証装置または３次元画像生成装置は、近赤外の光学パターンを照射する投影装置３と、近赤外の光を受光可能な撮像装置５と、撮像装置５により撮像される撮像対象の画像に基づいて顔の器官を検出して顔の領域を特定する顔領域特定部１０２と、光学パターンを照射した状態で撮像装置５により撮像される撮像対象の近赤外画像のうち、顔領域特定部１０２により特定された顔の領域に対応する部分についての３次元情報を生成する３次元情報取得部６０と、を備える。【選択図】図１１
