| 1. |
- Hansen, Dan Witzner, et al.
(author)
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Introduction to Eye and Gaze Trackers
- 2012
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In: Gaze Interaction and Applications of Eye Tracking. - : IGI Global. - 9781613500989 ; , s. 288-295
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Book chapter (peer-reviewed)abstract
- In the previous chapters of the book, you will have seen multiple applications for using (and the benefits of using) a gaze tracker. In this chapter, you will be given more insight into how an eye tracker operates. Not only can this aid in understanding the eye tracker better, it also gives important information about how future applications might improve on current ones, by using more of the information available from the eye tracker: as we shall see, an eye tracker can often provide you with more information than just coordinates on a screen. This chapter gives an overview of the components of an eye tracker and introduces basics of gaze modelling. It helps in understanding the following chapters which each provide some details of how to build an eye tracker. This section has technical content, but it is our hope that also readers not particularly interested in the details of eye and gaze trackers will gain some useful insights.
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| 2. |
- Mulvey, Fiona, et al.
(author)
-
Safety Issues and Infrared Light
- 2012
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In: Gaze Interaction and Applications of Eye Tracking. - : IGI Global. - 9781613500989 ; , s. 336-358
-
Book chapter (peer-reviewed)abstract
- Infrared light is the most common choice for illumination of the eye in current eye trackers, usually produced via IR light-emitting diodes (LEDs). This chapter provides an overview of the potential hazards of over-exposure to infrared light, the safety standards currently in place, configurations and lighting conditions employed by various eye tracking systems, the basics of measurement of IR light sources in eye trackers, and special considerations associated with continuous exposure in the case of gaze control for communication and disabled users. It should be emphasised that any eye tracker intended for production should undergo testing by qualified professionals at a recognised test house, in a controlled laboratory setting. However, some knowledge of the measurement procedures and issues involved should be useful to designers and users of eye tracking systems.
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