Patent ID: 8154591
Filing Date: 2012-04-10
Classification: G06K,G08B

Abstract:
1. An eyelid opening level determination device, comprising: a face image taking unit for taking a face image; a processor, including an upper eyelid detection unit for detecting an upper eyelid in the face image which is taken by the face image taking unit; a lower eyelid area setting unit for setting an area for searching a lower eyelid based on the upper eyelid detected by the upper eyelid detection unit; an edge group detecting unit for detecting an edge group where brightness changes from dark to bright as a lower eyelid candidate by scanning the area set by the lower eyelid area setting unit from an upper side to a lower side; a reliability value obtaining unit for obtaining a reliability value of the edge group detected by the edge group detecting unit; a lower eyelid determination unit in which the edge group having the reliability value exceeding a predetermined value in the edge group detected by the edge group detecting unit is determined to be the lower eyelid; and an eyelid opening level obtaining unit for obtaining an eyelid opening level based on positions for the upper eyelid and the lower eyelid; and a memory that stores a program for controlling the processor.