title: Toward the light field display: autostereoscopic rendering via a cluster of projectors.
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.
authors.affiliation: Department of Computer Science, University of Kentucky, Lexington, KY 40507-1464, USA. ryang@cs.ky.edu
authors.forename: Ruigang
authors.initials: R
authors.lastname: Yang
authors.forename: Xinyu
authors.initials: X
authors.lastname: Huang
authors.forename: Sifang
authors.initials: S
authors.lastname: Li
authors.forename: Christopher
authors.initials: C
authors.lastname: Jaynes
mesh_terms: D000465:Algorithms; D016000:Cluster Analysis; D003196:Computer Graphics; D003626:Data Display; D006696:Holography / Q000379:methods*; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008029:Lighting / Q000379:methods*; D009716:Numerical Analysis, Computer-Assisted; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity