Eye Tracking Techniques
This presentation, delivered in 2015, focuses on eye-tracking techniques and their applications across various fields such as psychology, neuroscience, marketing, and ergonomics. It first explains why eye-tracking is important and the different contexts in which it is used today.
The content then covers technical aspects, detailing the necessary hardware and underlying technology, including the corneal reflection system and basic operating principles. The presentation also explains how the eye functions: retinotopy, the three regions of the visual field, the visual pathway, and the brain areas involved in processing visual information.
Key concepts such as fixation points and saccades are reviewed to understand eye movements better. Various methods for analyzing and visualizing eye-tracking data are presented, including specific metrics, area-of-interest (AOI) based visualizations, scanpaths, and 3D representations like the space-time cube.
Finally, the presentation explores the combination of eye-tracking with facial expression analysis, the notion of visual saliency, and how these factors influence eye movement behaviors. It thus offers a comprehensive and detailed overview of the possibilities and applications of eye-tracking.
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