A Multi-Projector Display System with Virtual Camera Method for Distortion Correction on Quadric Surface Screens

Masato OGATA  Hiroyuki WADA  Kagenori KAJIHARA  Jeroen van BAAR  

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D   No.2   pp.814-824
Publication Date: 2006/02/01
Online ISSN: 1745-1361
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Computer Graphics
seamless display,  multi-projector,  image warping,  parallel rendering,  computer vision,  

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Multi-projector technology has been under consideration in recent years. This technology allows the generation of wide field of view and high-resolution images in a cost-effective manner. It is expected to be applied extensively to training simulators where vivid immersive sensations and precision are required. However, in many systems the viewing frustums cannot be automatically assigned for distributed rendering, and the required manual setup is complicated and difficult. This is because the camera should be coincide exactly with a desired eye point to avoid perspective distortions. For the actual applications, the camera is seldom able to be set up at the desired eye point because of physical constraints, e.g., a narrow cockpit with many instruments. To resolve this issue, we have developed a "virtual camera method" that yields high-precision calibration regardless of the camera position. This method takes advantage of the quadratic nature of the display surface. We developed a practical real-time multi-projector display system for applications such as training simulators, that require high-accuracy in geometry and rapid response time.