Methods for calibration free and multi-user eye tracking

Human beings sense and perceive most of the world through their eyes. The point of gaze clearly reflects our visual attention indicating our interests. Hence gaze can be used as a powerful tool in different research areas (e.g., marketing, psychology). The progress made over the years in eye tracking enables the creation of gaze-based interactive interfaces. However, these interfaces lack of generic usability outside a controlled environment in a spontaneous pervasive way. The main objective of this research is to investigate eye-tracking technologies by means of calibration. Since calibration is user, location, orientation and target dependent, it prevents from Multi-User interaction and gaze estimation on multiple various objects (e.g., multiple screens of different sizes). Tackling these issues, new mobile as well as remote interfaces are explored and new design spaces are opened.