A Low-Computational Approach on Gaze Estimation With Eye Touch System

Among various approaches to eye tracking systems, light-reflection based systems with non-imaging sensors, e.g., photodiodes or phototransistors, are known to have relatively low complexity; yet, they provide moderately accurate estimation of the point of gaze. In this paper, a low-computational approach on gaze estimation is proposed using the Eye Touch system, which is a light-reflection based eye tracking system, previously introduced by the authors. Based on the physical implementation of Eye Touch, the sensor measurements are now utilized in low-computational least-squares algorithms to estimate arbitrary gaze directions, unlike the existing light reflection-based systems, including the initial Eye Touch implementation, where only limited predefined regions were distinguished. The system also utilizes an effective pattern classification algorithm to be able to perform left, right, and double clicks based on respective eye winks with significantly high accuracy. In order to avoid accuracy problems for sensitive sensor biasing hardware, a robust custom microcontroller-based data acquisition system is developed. Consequently, the physical size and cost of the overall Eye Touch system are considerably reduced while the power efficiency is improved. The results of the experimental analysis over numerous subjects clearly indicate that the proposed eye tracking system can classify eye winks with 98% accuracy, and attain an accurate gaze direction with an average angular error of about 0.93 °. Due to its lightweight structure, competitive accuracy and low-computational requirements relative to video-based eye tracking systems, the proposed system is a promising human-computer interface for both stationary and mobile eye tracking applications.

[1]  Mark Shelhamer,et al.  A new "wireless" search-coil system , 2008, ETRA.

[2]  R. Cabeza,et al.  Robust algorithm for pupil-glint vector detection in a video-oculography eyetracking system , 2004, ICPR 2004.

[3]  Ömer Nezih Gerek,et al.  A wearable head-mounted sensor-based apparatus for eye tracking applications , 2008, 2008 IEEE Conference on Virtual Environments, Human-Computer Interfaces and Measurement Systems.

[4]  Andrew T. Duchowski,et al.  Eye Tracking Methodology: Theory and Practice , 2003, Springer London.

[5]  Toshiharu Mukai,et al.  Drifting and Blinking Compensation in Electro-oculography (EOG) Eye-gaze Interface , 2006, 2006 IEEE International Conference on Systems, Man and Cybernetics.

[6]  S.M. Kim,et al.  Non-intrusive eye gaze tracking under natural head movements , 2004, The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[7]  D. Robinson,et al.  A METHOD OF MEASURING EYE MOVEMENT USING A SCLERAL SEARCH COIL IN A MAGNETIC FIELD. , 1963, IEEE transactions on bio-medical engineering.

[8]  Sheng-Wen Shih,et al.  A novel approach to 3-D gaze tracking using stereo cameras , 2004, IEEE Trans. Syst. Man Cybern. Part B.

[9]  Gerhard Tröster,et al.  Wearable EOG goggles: eye-based interaction in everyday environments , 2009, CHI Extended Abstracts.

[10]  Margrit Betke,et al.  A Human–Computer Interface Using Symmetry Between Eyes to Detect Gaze Direction , 2008, IEEE Transactions on Systems, Man, and Cybernetics - Part A: Systems and Humans.

[11]  Kenji Irie,et al.  A laser-based eye-tracking system , 2002, Behavior research methods, instruments, & computers : a journal of the Psychonomic Society, Inc.

[12]  Yoshinobu Ebisawa.  Robust pupil detection by image difference with positional compensation , 2009, 2009 IEEE International Conference on Virtual Environments, Human-Computer Interfaces and Measurements Systems.

[13]  Tobi Delbruck,et al.  An eye tracking system using multiple near-infrared channels with Special application to efficient eye-based communication , 2005 .

[14]  Jin Liu,et al.  Eye and gaze tracking for visually controlled interactive stereoscopic displays , 1999, Signal Process. Image Commun..

[15]  Carlos Hitoshi Morimoto,et al.  Detecting eye position and gaze from a single camera and 2 light sources , 2002, Object recognition supported by user interaction for service robots.

[16]  Andrew Zisserman,et al.  Multiple View Geometry , 1999 .

[17]  Anthony C. Boucouvalas.  IEC 825-1 eye safety classification of some consumer electronic products , 1996 .

[18]  Jyh-Horng Chen,et al.  Webcam Mouse Using Face and Eye Tracking in Various Illumination Environments , 2005, 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference.

[19]  Peter D. Lawrence,et al.  A non-contact device for tracking gaze in a human computer interface , 2005, Comput. Vis. Image Underst..

[20]  Li-Qun Xu,et al.  A Novel Approach to Real-time Non-intrusive Gaze Finding , 1998, BMVC.

[21]  David Beymer,et al.  Eye gaze tracking using an active stereo head , 2003, 2003 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2003. Proceedings..

[22]  Jason Jianjun Gu,et al.  A study of natural eye movement detection and ocular implant movement control using processed EOG signals , 2001, Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164).

[23]  W. J. MacLean,et al.  An algebraic method for compensating for coil-placement errors in three-dimensional search-coil eye trackers , 1989, Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society,.

[24]  Dan Witzner Hansen,et al.  Eye tracking in the wild , 2005, Comput. Vis. Image Underst..

[25]  K. Preston White,et al.  Spatially dynamic calibration of an eye-tracking system , 1993, IEEE Trans. Syst. Man Cybern..

[26]  Ömer Nezih Gerek,et al.  The search for optimal feature set in power quality event classification , 2009, Expert Syst. Appl..

[27]  Ömer Nezih Gerek,et al.  A head-mounted sensor-based eye tracking device: eye touch system , 2008, ETRA '08.

[28]  L. Young,et al.  Survey of eye movement recording methods , 1975 .

[29]  Stefan Kohlbecher,et al.  A novel approach to video-based pupil tracking , 2009, 2009 IEEE International Conference on Systems, Man and Cybernetics.

[30]  Rafael Cabeza,et al.  Gaze Tracking System Model Based on Physical Parameters , 2007, Int. J. Pattern Recognit. Artif. Intell..

[31]  Dongheng Li,et al.  Towards an open-hardware open-software toolkit for robust low-cost eye tracking in HCI applications , 2005 .

[32]  Yoshinobu Ebisawa.  Realtime 3D position detection of human pupil , 2004, 2004 IEEE Symposium on Virtual Environments, Human-Computer Interfaces and Measurement Systems, 2004. (VCIMS)..

[33]  B. Comet,et al.  An eye movement recording method operating with a closed eye , 1983, Medical and Biological Engineering and Computing.

[34]  Peter D. Lawrence,et al.  Noncontact Binocular Eye-Gaze Tracking for Point-of-Gaze Estimation in Three Dimensions , 2009, IEEE Transactions on Biomedical Engineering.

[35]  Roel Wierts,et al.  Measuring Saccade Peak Velocity Using a Low-Frequency Sampling Rate of 50 Hz , 2008, IEEE Transactions on Biomedical Engineering.

[36]  Carlos Hitoshi Morimoto,et al.  Pupil detection and tracking using multiple light sources , 2000, Image Vis. Comput..

[37]  H D Crane,et al.  Accurate two-dimensional eye tracker using first and fourth Purkinje images. , 1973, Journal of the Optical Society of America.

[38]  B. Ripley,et al.  Pattern Recognition , 1968, Nature.

[39]  Arie E. Kaufman,et al.  An eye tracking computer user interface , 1993, Proceedings of 1993 IEEE Research Properties in Virtual Reality Symposium.

[40]  Yaoyao Hao,et al.  A portable wireless eye movement-controlled Human-Computer Interface for the disabled , 2009, 2009 ICME International Conference on Complex Medical Engineering.

[41]  Andrew Blake,et al.  Sparse and Semi-supervised Visual Mapping with the S^3GP , 2006, 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'06).

[42]  Eugene Paperno,et al.  Magnetic Eye Tracking: A New Approach Employing a Planar Transmitter , 2010, IEEE Transactions on Biomedical Engineering.

[43]  Alex Waibel,et al.  Tracking Eyes and Monitoring Eye Gaze , 1997 .

[44]  Moshe Eizenman,et al.  General theory of remote gaze estimation using the pupil center and corneal reflections , 2006, IEEE Transactions on Biomedical Engineering.

[45]  Qiang Ji,et al.  In the Eye of the Beholder: A Survey of Models for Eyes and Gaze , 2010, IEEE Transactions on Pattern Analysis and Machine Intelligence.