This chapter first discusses various areas of eye gaze research in order to show that gaze information plays an important role in various human cognitive activities. Based on the discussion, a three-step approach towards effective and natural gaze-aware human-computer interaction is proposed, which involves the analysis of human attentional behaviors, establishing computational models for interpreting eye gaze information, and building gaze-aware user interfaces. Finally, an overview of each chapter is provided to discuss how each of them contributes to one of these aspects.
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