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Proceedings Paper

High-efficiency acquisition of ray-space using radon transform
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Paper Abstract

In this paper, we propose a method for high efficiency acquisition of Ray-Space for FTV (Free viewpoint TV). In this research, incomplete data is directly captured by a novel device, i.e. photodiode/lens array, and transformed to full information by Radon transform. We must capture the large amount of data in conventional acquisition of Ray-Space using multiple cameras. However Ray-space has redundancy because it consists of set of lines which depend on depth of objects. We use the Radon transform to exploit this redundancy. The Radon transform is set of projection data along different directions. Thus Ray-space can be reconstructed from projection data in limited range by the inverse Radon transform. Capturing the part of projection data correspond to capturing sums of several rays by 1 pixel. We have simulated reconstruction of Ray-space projection data which was computed by computer simulation of capturing device. As a result, by using fewer pixels than rays, we could reduce the information to reconstruct Ray-space.

Paper Details

Date Published: 5 May 2010
PDF: 9 pages
Proc. SPIE 7690, Three-Dimensional Imaging, Visualization, and Display 2010 and Display Technologies and Applications for Defense, Security, and Avionics IV, 76900K (5 May 2010); doi: 10.1117/12.852673
Show Author Affiliations
Keiji Yamashita, Nagoya Univ. (Japan)
Tomohiro Yendo, Nagoya Univ. (Japan)
Mehrdad Panahpour Tehrani, Nagoya Univ. (Japan)
Toshiaki Fujii, Tokyo Institute of Technology (Japan)
Masayuki Tanimoto, Nagoya Univ. (Japan)


Published in SPIE Proceedings Vol. 7690:
Three-Dimensional Imaging, Visualization, and Display 2010 and Display Technologies and Applications for Defense, Security, and Avionics IV
Bahram Javidi; John Tudor Thomas; Jung-Young Son; Daniel D. Desjardins, Editor(s)

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