关键词: 视线跟踪, 注视点测量, 非接触式, 瞳孔中心角膜反射法, 头部姿态

Abstract: The eye tracking is the key technology of intelligent eye movement operating system, which is also the basis that enables eye movement operating system to be the advanced human-machine interactive applications. This paper gives a more comprehensive vision of the development of non-contact eye tracking technology, and introduces the non-contact eye gaze tracking technology that enables to achieve real-time dynamic eye tracking or gaze point estimation, including 2D eye tracking methods, 3D eye tracking methods and model-based 3D methods. Comparing and analyzing new development of the existing methods mentioned above, this paper illustrates the scientific problems that eye tracking technology currently faces, and presents a novel head-mounted free space eye tracking method based on binocular stereo vision. The conclusion is that eye tracking technology should meet intelligent human-machine interactive approach based on eye movement operating system expands to free space. The eye tracking technology develops towards high-precision, easy to configure and wider range of sight in free space measurement.

Key words: eye tracking, gaze estimation, non-contact, pupil center cornea reflection, head pose