Eyelid opening level determination device and computer readable medium storing computer program thereof

摘要

An eyelid opening level determination device (50) includes a face image taking means (10); an upper eyelid detection means (24) for detecting an upper eyelid in the face image; a lower eyelid area setting means (24) for setting an area for searching a lower eyelid based on the upper eyelid; an edge group detecting means (24) for detecting an edge group where brightness changes from dark to bright as a lower eyelid candidate by scanning the area from an upper side to a lower side; a reliability value obtaining means (24) for obtaining a reliability value of the edge group; a lower eyelid determination means (24) in which the edge group having the reliability value exceeding a predetermined value in the edge group is determined to be the lower eyelid; and an eyelid opening level obtaining means (24) for obtaining opening level of the eyelid based on positions for the upper eyelid and the lower eyelid.