This paper describes the display system which has an internal active focus control system with the camera for an eye gaze detection to enhance depth information.. In order to enhance the depth information of two-dimensional images, blur effect is often used in creating the CG image. However, in this situation, even if the observer gazes at unfocused objects, he cannot see the objects clearly. Hence, such the effect is static effect and different from the focal accommodation of eyes. We propose a prototype system for actively controlling the focus of an image on the basis of the point of gaze of the observer in order to simulate the effect of focal accommodation; our system can be mounted to the existing displays. By using this system, we conducted comparative experiments using an all-in-focus image and a controlled-focus image with regard to the gaze of the observer. The results indicated that we can improve the three-dimensional appearance of two-dimensional images.
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