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Proceedings Paper

Occlusion-removedcomputer generated cylindrical hologram using 3D point cloud
Author(s): Yu Zhao; Gang Li; Mei-Lan Piao; Hyun Min Lee; Nam Kim
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Paper Abstract

Viewing angle of the conventional flat hologram is not very large (less than 180°) attributed to their planar observation surface. If we want to synthesize a wide view computer generated hologram, a numerical simulation of the diffraction on the non-planar observation surfaces is required, computer generated cylindrical hologram (CGCH) can be a solution. Approximately 2,500 object points were used for this research. We have realized a CGCH that is viewable in 360°. However, the heavy computation load is one of the issues. Therefore, we propose a fast calculation method for a computer generated cylindrical hologram by the use of wave-front recording surface. The wave-front recording surface is placed between the object data and a CGCH. When the wave-front recording surface is placed close to the object, the object light passes through a small region on the wave recording surface. Therefore the computational complexity for the object light is very small. We can obtain a CGCH to execute diffraction calculation from the wave-front recording surface, propagating the recorded optical field of the wave-front recording surface to the cylindrical hologram surface using only two FFT operations and hence is much faster.

Paper Details

Date Published: 25 February 2014
PDF: 7 pages
Proc. SPIE 9006, Practical Holography XXVIII: Materials and Applications, 90061H (25 February 2014); doi: 10.1117/12.2039775
Show Author Affiliations
Yu Zhao, Chungbuk National Univ. (Korea, Republic of)
Gang Li, Seoul National Univ. (Korea, Republic of)
Mei-Lan Piao, Chungbuk National Univ. (Korea, Republic of)
Hyun Min Lee, Chungbuk National Univ. (Korea, Republic of)
Nam Kim, Chungbuk National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9006:
Practical Holography XXVIII: Materials and Applications
Hans I. Bjelkhagen; V. Michael Bove, Editor(s)

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