title: Empirical Study on Designing of Gaze Tracking Camera Based on the Information of User's Head Movement.
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.
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. westpan@dongguk.edu.
authors: Weiyuan
authors: W
authors: Pan
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. jung4759@gmail.com.
authors: Dongwook
authors: D
authors: Jung
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. steve10@hanmail.net.
authors: Hyo Sik
authors: HS
authors: Yoon
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. exexzz@naver.com.
authors: Dong Eun
authors: DE
authors: Lee
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. rizwanali@dongguk.edu.
authors: Rizwan Ali
authors: RA
authors: Naqvi
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. whrrk2001@naver.com.
authors: Kwan Woo
authors: KW
authors: Lee
authors: Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. parkgr@dongguk.edu.
authors: Kang Ryoung
authors: KR
authors: Park
mesh_terms: D036262:Empirical Research; D004867:Equipment Design; D005403:Fixation, Ocular / Q000502:physiology*; D019416:Head Movements / Q000502:physiology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D010781:Photography / Q000295:instrumentation*; D014465:Ultrasonics
keywords: accuracy; empirical study; gaze tracking; optimal viewing angle and DOF of camera lens; user convenience and interest