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Shading of a computer-generated hologram by zone plate modulation |
Optics Express, Vol. 20, Issue 4, pp. 3529-3540 (2012)
http://dx.doi.org/10.1364/OE.20.003529
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Abstract
We propose a hologram calculation technique that enables reconstructing a shaded three-dimensional (3D) image. The amplitude distributions of zone plates, which generate the object points that constitute a 3D object, were two-dimensionally modulated. Two-dimensional (2D) amplitude modulation was determined on the basis of the Phong reflection model developed for computer graphics, which considers the specular, diffuse, and ambient reflection light components. The 2D amplitude modulation added variable and constant modulations: the former controlled the specular light component and the latter controlled the diffuse and ambient components. The proposed calculation technique was experimentally verified. The reconstructed image showed specular reflection that varied depending on the viewing position.
© 2012 OSA
OCIS Codes
(090.1760) Holography : Computer holography
(090.2870) Holography : Holographic display
(120.2040) Instrumentation, measurement, and metrology : Displays
(070.6120) Fourier optics and signal processing : Spatial light modulators
ToC Category:
Holography
History
Original Manuscript: December 2, 2011
Revised Manuscript: January 15, 2012
Manuscript Accepted: January 15, 2012
Published: January 30, 2012
Citation
Takayuki Kurihara and Yasuhiro Takaki, "Shading of a computer-generated hologram by zone plate modulation," Opt. Express 20, 3529-3540 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-3529
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