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Sensors 2016, 16(1), 110; doi:10.3390/s16010110

Compensation Method of Natural Head Movement for Gaze Tracking System Using an Ultrasonic Sensor for Distance Measurement

1
Division of Electronics and Electrical Engineering, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea
2
Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Xiaoning Jiang
Received: 9 November 2015 / Revised: 11 January 2016 / Accepted: 14 January 2016 / Published: 16 January 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [9234 KB, uploaded 16 January 2016]   |  

Abstract

Most gaze tracking systems are based on the pupil center corneal reflection (PCCR) method using near infrared (NIR) illuminators. One advantage of the PCCR method is the high accuracy it achieves in gaze tracking because it compensates for the pupil center position based on the relative position of corneal specular reflection (SR). However, the PCCR method only works for user head movements within a limited range, and its performance is degraded by the natural movement of the user’s head. To overcome this problem, we propose a gaze tracking method using an ultrasonic sensor that is robust to the natural head movement of users. Experimental results demonstrate that with our compensation method the gaze tracking system is more robust to natural head movements compared to other systems without our method and commercial systems. View Full-Text
Keywords: gaze tracking system; compensation of head movements; ultrasonic sensor; natural head movement gaze tracking system; compensation of head movements; ultrasonic sensor; natural head movement
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jung, D.; Lee, J.M.; Gwon, S.Y.; Pan, W.; Lee, H.C.; Park, K.R.; Kim, H.-C. Compensation Method of Natural Head Movement for Gaze Tracking System Using an Ultrasonic Sensor for Distance Measurement. Sensors 2016, 16, 110.

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