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Simulating a mirror using a one-way mirror and motorized camera
Sen-ching Samson Cheung
A simulated mirror display is a camera-display system that renders a mirror image of the individual standing in front of the display. The ability to capture and manipulate mirror image is important for many medical applications. For example, the use of the so-called mirror box has proven to be very useful for the rehabilitation of stroke patients. Also, in behavioral theory, children with autism watch themselves in mirror and in video to learn appropriate speech and social behavior. The key challenge of simulating a mirror is to track the position of the individual in front and render the virtual mirror image from his/her point of view. Most existing simulated mirror displays place fixed cameras around the display surface to capture the 3D environment, which is then used to render the view-dependent mirror image. Such a setup fails to accurately capture the frontal image of the subject. For this project, we will explore the possibility of using a one-way mirror at an angle to reflect a projector display and to allow light to pass through onto a camera behind. The camera is mountable on a movable XYZ T-slot table with robotic pulleys. The camera will follow the position of the eyes of the individual. A commodity depth sensor (aka Microsoft’s Kinect) on top of the display will be used to accurately determine the 3D position of the eyes. Image processing techniques will be developed to enhance the contrast and mitigate motion blur in the video captured by the moving camera.
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