Toward the light field display: autostereoscopic rendering via a cluster of projectors |
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Authors: | Yang Ruigang Huang Xinyu Li Sifang Jaynes Christopher |
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Affiliation: | Department of Computer Science, University of Kentucky, Lexington, KY 40507-1464, USA. ryang@cs.ky.edu |
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Abstract: | Ultimately, a display device should be capable of reproducing the visual effects observed in reality. In this paper we introduce an autostereoscopic display that uses a scalable array of digital light projectors and a projection screen augmented with microlenses to simulate a light field for a given three-dimensional scene. Physical objects emit or reflect light in all directions to create a light field that can be approximated by the light field display. The display can simultaneously provide many viewers from different viewpoints a stereoscopic effect without head tracking or special viewing glasses. This work focuses on two important technical problems related to the light field display; calibration and rendering. We present a solution to automatically calibrate the light field display using a camera and introduce two efficient algorithms to render the special multi-view images by exploiting their spatial coherence. The effectiveness of our approach is demonstrated with a four-projector prototype that can display dynamic imagery with full parallax. |
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