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Realistic expression for full-parallax computer-generated holograms with the ray-tracing method |
Applied Optics, Vol. 52, Issue 1, pp. A201-A209 (2013)
http://dx.doi.org/10.1364/AO.52.00A201
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Abstract
This paper presents a calculation method of computer-generated holograms that involves removing the hidden surface and provides realistic rendering. The method was based on the ray-tracing method that simulates rays traveling paths. Rays are cast from every elementary hologram into virtual objects and then the traveling paths of the rays are determined. Since the method is considering intersection with objects, absorption, reflection, and refraction, the method is capable of rendering realistic images. Multiple reflections and refraction are expressed by casting additional rays into the reflection direction and the transmission direction and calculating the length of the light path. To express the quality of materials, the Phong reflection model and CookâTorrance reflection model were used. Results of optical reconstructions show that the hidden surface removal was conducted. Moreover, the texture of material appeared as well as other effects by the proposed method.
© 2012 Optical Society of America
OCIS Codes
(090.0090) Holography : Holography
(090.1760) Holography : Computer holography
History
Original Manuscript: August 13, 2012
Revised Manuscript: October 18, 2012
Manuscript Accepted: October 19, 2012
Published: November 16, 2012
Citation
Tsubasa Ichikawa, Kazuhiro Yamaguchi, and Yuji Sakamoto, "Realistic expression for full-parallax computer-generated holograms with the ray-tracing method," Appl. Opt. 52, A201-A209 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-1-A201
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