Results 191 to 200 of about 11,710 (245)
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Iterative reconstruction of in-line electron holograms
Micron, 2005In low energy electron point source (LEEPS) microscopy, electrons emerge from a point source, propagate as spherical waves, and arrive at a screen. Some electrons scatter off an object, i.e. a cluster of atoms, placed between the source and the screen; others arrive at the screen without scattering.
Jose F, Arocena +2 more
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Scanline rendering of digital HPO holograms and hologram numerical reconstruction
Proceedings of the 22nd Spring Conference on Computer Graphics, 2006This paper presents a fast and complete rendering method that can be used for creating digital horizontal parallax only (HPO) holograms of a scene consisting of triangle mesh objects. This method solves visibility and occlusion problems and is capable of working with triangles as the basic primitive instead of the usually used points.
Martin Janda, Ivo Hanák, Václav Skala
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Microwave Holograms and Optical Reconstruction
Applied Optics, 1967Experiments on the construction of holograms using microwaves and the optical reconstruction of images were conducted. The microwave fields were detected by a diode which mechanically scans the field distribution. The electrical signals from the detector were amplified and converted to light signals which were recorded on photographic films by a camera
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Electronic reconstruction of acoustic holograms
IEEE Transactions on Audio and Electroacoustics, 1970A method is described for reconstructing acoustic hologram images using an electronic means which avoids multiple image formation. When the dimensions of the hologram are small compared to the dimensions of the viewing area, the incident waves are approximately plane rather than spherical.
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Diffractive Networks All-Optically Reconstruct Holograms
Conference on Lasers and Electro-Optics, 2022We present a new framework for computer-free, all-optical reconstruction of inline holograms through a passive diffractive network that is trained with holographic image data using deep learning.
Md Sadman Sakib Rahman, Aydogan Ozcan
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Image Reconstruction with Fraunhofer Holograms*
Journal of the Optical Society of America, 1966The holograms considered are formed from opaque or transparent diffracting objects which are contained in an aperture illuminated with a coherent, collimated, quasimonochromatic beam of light. It has been shown that the intensity distribution in the near-field of the aperture, but in the far-field of the individual objects which are contained in the ...
John B. DeVelis +2 more
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Digital hologram recording and stereo reconstruction from a single hologram
SPIE Proceedings, 2013In this paper we present novel results on the reconstruction of stereoscopic information from a single phase-shift hologram captured using a 2:2 μm pixel-pitch CMOS camera in a holographic interferometer configuration. The low pixel-pitch camera allows the digitizing of holograms with a higher spatial-frequency than what has been reported in the ...
Angelo Arrifano +3 more
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Reconstruction characteristics of polarization holograms
2012 11th Euro-American Workshop on Information Optics, 2012The characteristics of the reconstruction of polarization holography are investigated in order to analyze the fundamental performance of polarization holographic memory system. It is found that, in general, the polarization state of the reconstructed signal is different from that of the recorded signal.
Kazuo Kuroda +2 more
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Hologram-Shifting Method for High-Speed Electron Hologram Reconstruction
Japanese Journal of Applied Physics, 1992A simple digital method for high-speed or real-time reconstruction of electron holograms is described. The method is based on the so-called hologram shifting which causes a phase-shifting effect. Consequently the phase-shifting formula, which requires only some simple calculations, can in priciple be utilized to reconstruct electron holograms in ...
Qingxin Ru +3 more
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Fresnel’s rings in reconstruction of scattering media holograms
Applied Optics, 1995The theoretical description of the field reconstructed from an in-line hologram of dispersed media is presented. The intensity distribution in the focal plane of a lens placed behind a hologram is analyzed. It is shown that two overlapped patterns are observing in this plane.
A G, Borovoi +3 more
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