Development of Eye-Gaze Interface System and Its Application to Virtual Reality Controller

Eye-gaze tracking systems are a type of human-machine interface application. These systems have been widely applied in many fields, such as medical, interface systems, and studies on human behavior. In this study, an eye-gaze tracking system is designed to control the view of a virtual reality application. As is generally known, gyroscopes and game controllers are popular devices to control the view of virtual reality applications. To control the view of a virtual reality application, we measure the vertical and horizontal movements of the eye-gaze. Using ring-shaped pattern matching, we find the position of the iris and estimate the direction of the eye-gaze. The vertical and horizontal movement of the eye-gaze are transformed into the rotation of virtual reality camera view in the x and y axes, respectively. The ease of use of the system was evaluated in terms of the distance traveled by the user and the time taken to complete the task.