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Proceedings Article

Computer-generated holograms considering background reflection on various object shapes with reflectance distributions

[+] Author Affiliations
Kazuhiro Yamaguchi, Yuji Sakamoto

Hokkaido Univ. (Japan)

Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 761909 (February 10, 2010); doi:10.1117/12.841779
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From Conference Volume 7619

  • Practical Holography XXIV: Materials and Applications
  • Hans I. Bjelkhagen; Raymond K. Kostuk
  • San Francisco, California | January 23, 2010

abstract

Computer-generated hologram (CGH) is a one of 3-D display technologies, and it reconstructs natural and virtual objects. However, improvement of the reality of reconstructed images is necessary for reconstructing complex and clear scenes like computer graphics. We have studied about the rendering techniques for CGH, and proposed the method considering background reflections and reflectance distributions. The background reflections and reflectance distributions are the characteristics of reflection. Metallic objects and reflected scenes were reconstructed by considering these. In this paper, we improved the previous works for express complex scenes. The proposed method considered the background reflections and reflectance distributions on the curved surface such as convex and concave mirrors. By using the phase transformation, the background reflections and reflectance distributions on it with some roughness are generated. We performed that the background reflections and reflectance distributions on the convex and concave mirrors with roughness are actually obtained through computational and optical reconstructions.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Kazuhiro Yamaguchi and Yuji Sakamoto
"Computer-generated holograms considering background reflection on various object shapes with reflectance distributions", Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 761909 (February 10, 2010); doi:10.1117/12.841779; http://dx.doi.org/10.1117/12.841779


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