PROBLEM TO BE SOLVED: To provide a visual line detection device with which it is possible to accurately detect the direction of the visual line of a subject even at a measurement place where brightness fluctuates and brightness is less than a certain value.SOLUTION: The visual line detection device is provided with a determination information acquisition unit for acquiring determination information pertaining to brightness around the visual line detection device. An image acquisition unit acquires images from a plurality of cameras arranged separately by a prescribed distance so that the optical axes are not approximately coaxial with each other. Each of a plurality of light sources is arranged so that the optical axes are approximately coaxial with respect to one of the plurality of cameras, the plurality of light sources including a first light source emitting detection light of a first wavelength and a second light source emitting detection light of a second wavelength longer than the first wavelength and not visually recognizable by the subject. The visual line detection device is provided with an image-capture control unit for selecting, on the basis of the determination information acquired by the determination information acquisition unit, a combination of the plurality of light sources and the plurality of cameras depending on which of a bright pupil image and a dark pupil image is to be extracted.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】明るさが変動し、明るさが一定値未満になる測定場所であっても、対象者の視線方向を正確に検出することのできる視線検出装置を提供する。【解決手段】視線検出装置の周囲の明るさに関する判定情報を取得する判定情報取得部を備え、画像取得部は、光軸が互いに略同軸とならない所定距離だけ離間されるように配置された複数のカメラから画像を取得し、複数の光源は、複数のカメラのいずれかに対して、光軸が略同軸となるようにそれぞれ配置され、複数の光源は、第1波長の検知光を出射する第1光源と、第1波長よりも長い波長であって対象者が視認できない第2波長の検知光を出射する第2光源とを含み、視線検出装置は、判定情報取得部によって取得された判定情報に基づいて、明瞳孔画像と暗瞳孔画像のいずれの画像を抽出するかに応じて、複数の光源と複数のカメラの組み合わせを選択する撮像制御部を備える。【選択図】図2
