Construction of Gazing Input System Based on Eyelid Shape Approximation

Abstract

It is considered that gazing motion is very useful due to the fact that the motion is unburdened and non-contact operation can be done. In this paper, we proposed a new intuitive interface based on the eyelid shape. User's face was observed by the USB camera, and it was taken to the computer to recognize the user's gazing directions. The gazing directions in the upward and downward were recognized by approximating the eyelid shape with the Bezier curve. As the gazing point became lower than the height of the camera, the curvature value of the approximation curve was decreased because the eyelid shape roughly became linear.