Revision reflected point calculation expedient and the revision reflected point which calculate the revision reflected point which is the 1st reflected point where the contemplation point detection device of this invention being the contemplation point detection device which detects the contemplation point to peripheral environment of the subject, revises the 1st reflected point on the basis of the private parameter which shows of reflected point presumption expedient and the difference of gaze direction of the subject and the optical axis direction of the eyeball which, presume the 1st reflected point which the eyeball picture acquisition expedient which acquires the eyeball picture of the subject and the light which arrives from the optical axis direction of the eyeball of the subject reflect from the eyeball picture is revisedOn the basis with of light and the light of peripheral environment, it has with the contemplation point detection expedient which detects the contemplation point.本発明の注視点検出装置は、被験者の周辺環境への注視点を検出する注視点検出装置であって、被験者の眼球画像を取得する眼球画像取得手段と、被験者の眼球の光軸方向から到来した光が反射する第1反射点を眼球画像から推定する反射点推定手段と、被験者の視線方向と眼球の光軸方向との差を示す個人パラメータに基づいて第1反射点を補正し、補正された第1反射点である補正反射点を算出する補正反射点算出手段と、補正反射点の光と周辺環境の光とに基づいて、注視点を検出する注視点検出手段とを備える。
