Design of High Speed Gaze Tracking System Under Visible Light Condition

• Main Authors: Wei-Te Chang, 張維德
• Other Authors: Wen-Chung Kao
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/11262552761442598392

碩士 === 國立臺灣師範大學 === 應用電子科技學系 === 101 === Most gaze tacking system relies on strong IR light to enhance illumination and fulfill high accurate rate, thus this results in poor user experience. In this thesis, we present a high speed gaze tracking system which is operated in a normal lighting condition and overcome the insufficient of lightness and flicker coursed by high speed capture rate. The proposed system contains four parts: how to decide the search space in image, how to roughly get the gaze direction by pattern recognition technique, how to extract useful features under known search space, how to calculate the mapping function from image coordinate to screen coordinate and finally, how to get the accurate rate of this system. Under 240 frames/s sample rate, this system can achieve the accuracy of 0.76 degree and 1.43 degree for the horizontal and vertical coordinates of the detected gaze center, respectively.