A study of Eye-tracking properties utilizing Tobii Eye Tracker 5

University essay from Högskolan i Gävle/Avdelningen för elektroteknik, matematik och naturvetenskap

Abstract: Eye-tracking is the process of determining the point where the viewer is looking at. Therefore, an eye tracker is a device that measures eye positions and eye movements. Over the recent few years, eye trackers are being used in research in the area of medical technology, visual system, rehabilitation, and human-computer interaction. This study explores the application of eye-tracking in watching and rendering images on a computer screen. In this research, Eye-tracker 5 developed by Tobii is used which is a popular instrument among other eye trackers. Tobii Eye Tracker 5 includes a software development kit (SDK) enabling the creation of new research projects based on eye-tracking and head movement. This work measured eye-tracking streaming data on the digital images, and post-process the gaze data to observe the gaze pattern of the human eye. This thesis investigated the impact of blinking using subtle gaze direction (SGD) approach, which states that flickering on the computer screen in peripheral vision instead of foveal vision attracts human attention and as the viewer’s foveal vision attracted to that blinking point, flickering was stopped and, subsequently, performed flickering to the next point of interest while the viewer is watching the previous point of interest. The work successfully modeled flickering on the desired locations of an image. Furthermore, rendering to different images is also demonstrated in this work using entirely through eye movement. It is envisaged that eye-gazing-based control technology would have tremendous applications in almost all areas of future technology, particularly in assistive technology.

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