A new data processing and calibration method for an eye-tracking device pronunciation system

• Published in: Optics and laser technology Vol. 34; no. 5; pp. 405 - 413
• Main Authors: Lin, Chern-Sheng, Chang, Kai-Chieh, Jain, Young-Jou
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.07.2002; Elsevier Science
• Subjects: Auto-calibration algorithm; Computers in experimental physics; Exact sciences and technology; Eye-tracking device; Head mounted display; Image processing; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Physics; Remote operation; Eye-tracking device; Head mounted display; Auto-calibration algorithm; Remote operation; Algorithms; CCD camera; Tracking; Selfcalibration; Image processing; Theoretical study; Video cameras; Data processing; Head mounted displays; Pattern recognition; Experimental study; Artificial speech
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/S0030-3992(02)00038-5

In this paper, a new data processing and calibration method for a pronunciation system of an eye-tracking device is described. The eye-tracking device was created using both head mounted display (HMD) technology and remote operation capabilities. A pattern recognition computer program was used to distinguish the pupil position and calculate its coordinates. This system can be adapted to provide a digital speech function. A new method for processing the image of the eye in the PC-based system was also developed. With one video CCD camera and frame grabber analyzing a series of human pupil images while the subject is gazing at the screen, an auto-calibration algorithm is used to obtain the direction of the eye gaze in real time. The computers provide the speech sound according to the location where the eye gazes exceed 0.5 s . The availability of multipurpose in this eye-tracking system with very simple equipment will be reconfirmed for future advanced research.