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Sensors 2016, 16(9), 1396; doi:10.3390/s16091396

Empirical Study on Designing of Gaze Tracking Camera Based on the Information of User’s Head Movement

Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 17 June 2016 / Revised: 24 August 2016 / Accepted: 25 August 2016 / Published: 31 August 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [7488 KB, uploaded 31 August 2016]   |  

Abstract

Gaze tracking is the technology that identifies a region in space that a user is looking at. Most previous non-wearable gaze tracking systems use a near-infrared (NIR) light camera with an NIR illuminator. Based on the kind of camera lens used, the viewing angle and depth-of-field (DOF) of a gaze tracking camera can be different, which affects the performance of the gaze tracking system. Nevertheless, to our best knowledge, most previous researches implemented gaze tracking cameras without ground truth information for determining the optimal viewing angle and DOF of the camera lens. Eye-tracker manufacturers might also use ground truth information, but they do not provide this in public. Therefore, researchers and developers of gaze tracking systems cannot refer to such information for implementing gaze tracking system. We address this problem providing an empirical study in which we design an optimal gaze tracking camera based on experimental measurements of the amount and velocity of user’s head movements. Based on our results and analyses, researchers and developers might be able to more easily implement an optimal gaze tracking system. Experimental results show that our gaze tracking system shows high performance in terms of accuracy, user convenience and interest. View Full-Text
Keywords: gaze tracking; optimal viewing angle and DOF of camera lens; empirical study; accuracy; user convenience and interest gaze tracking; optimal viewing angle and DOF of camera lens; empirical study; accuracy; user convenience and interest
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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

Pan, W.; Jung, D.; Yoon, H.S.; Lee, D.E.; Naqvi, R.A.; Lee, K.W.; Park, K.R. Empirical Study on Designing of Gaze Tracking Camera Based on the Information of User’s Head Movement. Sensors 2016, 16, 1396.

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