Issue No. 01 - January/February (2008 vol. 14)
<p><b>Abstract</b>—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 headtracking 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.</p>
virtual reality, display algorithms, projector calibration, image-based rendering
X. Huang, S. Li, R. Yang and C. Jaynes, "Toward the Light Field Display: Autostereoscopic Rendering via a Cluster of Projectors," in IEEE Transactions on Visualization & Computer Graphics, vol. 14, no. , pp. 84-96, 2007.