PROBLEM TO BE SOLVED: To provide an eye-opening state detection device capable of preventing deterioration in detection accuracy of an eye-opening state.SOLUTION: An eye-opening state detection device 1 for detecting an eye-opening state based on image information, comprises: an eyelid candidate selection unit 23 and an eyelid detection unit 24 that detect the positions of upper eyelids and the positions of lower eyelids based on the image information and an eye-opening state detection unit 25 that detects an eye-opening state based on the positions of the upper eyelids and the positions of the lower eyelids. The eyelid candidate selection unit 23 and the eyelid detection unit 24 make an influence on a detection result by the image information in a red-eye area generated due to light transmitting through a pupil and reflected on a retina smaller than that by the image information in other areas.COPYRIGHT: (C)2012,JPO&INPIT【課題】開眼状態の検出精度低下を防止することができる開眼状態検出装置を提供する。【解決手段】画像情報に基づいて開眼状態を検出する開眼状態検出装置1であって、前記画像情報に基づいて上瞼の位置及び下瞼の位置を検出する瞼候補選定部23及び瞼検出部24と、上瞼の位置及び下瞼の位置に基づいて開眼状態を検出する開眼状態検出部25と、を備え、瞼候補選定部23及び瞼検出部24は、瞳孔を透過し網膜で反射される光によって発生する赤目領域の前記画像情報が検出結果に与える影響を他の領域の前記画像情報よりも小さくすることを特徴として構成する。【選択図】図1
