Results 161 to 170 of about 701 (192)

Computer-generated holograms at an arbitrary viewpoint synthesized from multi-view images

SPIE Proceedings, 2009
We propose a new method of synthesizing computer-generated holograms (CGHs) at an arbitrary viewpoint from multi-view images under a natural light environment. This method generates a CGH of an arbitrary viewpoint using multi-view images from randomly arranged cameras. The method is based on a distance transformation and a rotation of a light wave. The
M. Kinoshita, Y. Sakamoto
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Holo-graphics: A Framework for Synthesizing Hologram of Complex Object Scene

3D Research, 2014
This paper reports a novel concept known as “Holo-graphics”, a term that is an amalgamation of “hologram” and “computer graphics”. The idea is to explore a method whereby traditional computer graphic techniques can be applied in synthesizing holograms of complicated object scenes.
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Analysis of the leakage from computer-generated holograms synthesized by direct binary search

Journal of the Optical Society of America A, 1989
Images reconstructed from computer-generated holograms synthesized by the iterative direct binary search (DBS) technique suffer from noise due to leakage from uncontrolled parts of the diffraction pattern. The statistics of the nonhomogeneous leakage noise are analyzed under the assumption of independent, identically distributed (iid) addressable ...
Brian K. Jennison, Jan P. Allebach
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Wide-angle optical systems with combiner on the basis of the synthesized volume holograms for HMD

SPIE Proceedings, 2007
Designing and manufacturing of wide-angle optical systems for application in helmet mount displays are considered. Specific requirements are shown and analyzed, including: minimization of weight and size, achievement of the big field of vision, convenience of allocation on a helmet and others. Key element of HMD is combiner.
Mikhail Gan, Sergey Scheglov, Iakov Gan, Alexander Tchertkov   +3 more
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Bounding box extraction from spherical hologram of elementary object to synthesize hologram of arbitrary three-dimensional scene with occlusion consideration (Invited Paper)

Chinese Optics Letters, 2014
A novel method to extract a bounding box that contains the three-dimensional object from its spherical hologram is proposed. The proposed method uses the windowed Fourier transform to obtain the angular distribution of the quasi-collimated beams at each position in the spherical hologram and estimates ...
Jae-Hyeung Park Jae-Hyeung Park, Hong-Gi Lim Hong-Gi Lim   +1 more
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Three-Dimensional Fourier-Transform Method for Synthesizing Binary Holograms*

Journal of the Optical Society of America, 1968
A new method for the synthesis of holograms, based on a Fourier transformation, has been theoretically derived and experimentally verified. The method extends the familiar two-dimensional optical Fourier-transform analysis to include objects located in a volume centered about the focal point of the transform lens, and is specifically developed to ...
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Method for increasing the depth of field of images of flat transparencies reconstructed using synthesized holograms

Journal of Optical Technology, 2018
The influence of the parameters used in synthesizing hologram projectors on the distribution of complex amplitude in the planes of hologram synthesis and the reconstructed image is considered. A method for increasing the depth of field of the reconstructed images is proposed and investigated.
S. N. Koreshev, D. S. Smorodinov, M. A. Frolova   +2 more
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Scattering of Light by Spherical Liquid Droplets Using Computer-Synthesized Holograms

Journal of the Optical Society of America, 1968
A cathode-ray tube linked to a computer is used to synthesize holograms of spherical liquid droplets illuminated by plane waves of monochromatic linearly polarized light. The classical Mie solution is employed to determine the far-field radiation pattern of the light waves scattered by the droplets.
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Error Measurement Method in the Fabrication of Precision Synthesized Holograms on Circular Laser Writing Systems

Optoelectronics, Instrumentation and Data Processing, 2019
A method has been developed and investigated to measure the fabrication accuracy of precision synthesized structures by circular laser writing systems using special microstructures formed in two orthogonal directions. These microstructures consist of two parts, one of which is formed before precision structure fabrication, and the second during this ...
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Synthesized holograms in medicine and industry

SPIE Proceedings, 1990
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