PROBLEM TO BE SOLVED: To precisely detect a gaze direction during use of a camera with a zoom function.SOLUTION: A gaze detection device 1 comprises: a pair of wide visual field cameras 10 for detecting three-dimensional positions of the eyes of an object person a narrow visual field camera 30 for imaging the eyes of the object person two light sources 33 arranged at different positions facing the object person and an image processor 40 which detects, based upon the image of the eyes picked up by the narrow visual field camera 30, coordinates of the pupils of the object person on the image and coordinates of two corneal reflections on the image, and calculates the direction of a gaze of the object person based upon coordinates of the pupils and coordinates of at least one of the two corneal reflections. The image processor 40 calculates an enlargement rate of the image by the narrow visual field camera 30 based upon the coordinates of the two corneal reflections and the three-dimensional positions of the eyes.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】ズーム機能を備えたカメラを用いた際に視線方向を精度よく検出すること。【解決手段】視線検出装置1は、対象者の眼の3次元位置を検出するための一対の広視野カメラ10と、対象者の眼を撮像する狭視野カメラ30と、対象者に向けられた異なる位置に配置された2つの光源33と、狭視野カメラ30によって撮像された眼の画像を基に、対象者の瞳孔の画像上の座標と、2つの角膜反射の画像上の座標とを検出し、瞳孔の座標と2つの角膜反射のうちの少なくとも1つの座標とを基に対象者の視線の方向を算出する画像処理装置40とを備え、画像処理装置40は、2つの角膜反射の座標と眼の3次元位置とを基に狭視野カメラ30による画像の拡大率を算出し、拡大率を基に視線の方向を算出する。【選択図】図1
