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30 October 2009 A novel pixel router for large-scale multiprojector displays
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Proceedings Volume 7497, MIPPR 2009: Medical Imaging, Parallel Processing of Images, and Optimization Techniques; 74970J (2009)
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China
This paper describes a newly developed hardware used in multi-projector displays built with a network of PCs, commodity graphics accelerators, multiple projectors, cameras, and large-scale screens. In order to completely remove the photometric seams or geometric discontinuities on projector boundaries in such a multi-projector display, the frame-buffer content for each projector has to be warped and attenuated properly. So the system must include a high-performance and scalable pixel routing subsystem in order to create seamless imagery. Here we propose to develop a flexible pixel router to solve this problem. Our router is capable of performing an arbitrary mapping of pixels from any input frame to any output frame, and executing typical composition operations at the same time. The main challenge of developing the hardware is to maintain the refresh rate. We analyse hardware pixel routing for multi-projector displays. We demonstrate the construction of large-scale multi-projector display systems using this flexible pixel router that bridges the image generator and the projectors. We also present an initial hardware prototype and some preliminary results in the hardware development. Experimental results show that our approach is both feasible and robust.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Qihui Wang, Ruigang Yang, Zhouxiang Shou, and Yuhuai Wang "A novel pixel router for large-scale multiprojector displays", Proc. SPIE 7497, MIPPR 2009: Medical Imaging, Parallel Processing of Images, and Optimization Techniques, 74970J (30 October 2009);


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