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Proceedings Paper

Multiprojector tiled display wall calibration with a camera
Author(s): Chao Li; Hai Lin; Jiaoying Shi
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Paper Abstract

Recent developments in computer graphics hardware and distributed parallel rendering research have greatly improved the rendering capabilities of graphics workstations and PC clusters. However, the display resolution of monitors is still far from being enough, and thus become the bottleneck of visualization. Recently, more and more people are focusing on using multiple projectors to form a large display wall and provide high display resolutions. One essential problem of these kinds of systems is how to calibrate the projectors and make the whole display wall seamless and perfect. Traditional software calibration algorithms have three main problems: re-rendering and over illumination in overlapping regions, calibration being not general. In this paper, we introduce our multi-projector tiled display wall calibration system using a digital camera which mainly focuses on solving these three problems. For the first two, we make specific divisions to the overlapping regions basing on our dividing algorithms and each projector project only part of the overlapping images. Furthermore, we make some sub-division to each part and make the mosaic seamless. And for the last problem, we adopt the idea of the open source software VNC, and implement our calibration on the layer of Windows desktop, thus make the calibration process application independent.

Paper Details

Date Published: 17 January 2005
PDF: 8 pages
Proc. SPIE 5668, Image Quality and System Performance II, (17 January 2005); doi: 10.1117/12.585446
Show Author Affiliations
Chao Li, Zhejiang Univ. (China)
Hai Lin, Zhejiang Univ. (China)
Jiaoying Shi, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 5668:
Image Quality and System Performance II
Rene Rasmussen; Yoichi Miyake, Editor(s)

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