Results 251 to 260 of about 2,557,405 (292)
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SPIE Proceedings, 2011
We have created a programming tool which uses image data provided by webcam connected to personal computer and gives user an ability to see the future digital hologram preview on his computer screen, before sending video data to holographic printing companies.
Andrej Nikolskij +2 more
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We have created a programming tool which uses image data provided by webcam connected to personal computer and gives user an ability to see the future digital hologram preview on his computer screen, before sending video data to holographic printing companies.
Andrej Nikolskij +2 more
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Characterization of Long Multi-Mode Fiber Links using Digital Holography
Optical Fiber Communications Conference and Exhibition, 2019We propose to use digital holography to characterize long multi-mode fiber links. A four segment 26.5km fiber span supporting 45 spatial modes is analyzed, showing the evolution of both mode-dependent loss and cross talk.
M. Mazur +10 more
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SPIE Proceedings, 2005
The Modulation Transfer Function (MTF) in digital holography is discussed. Theoretical derivation of its form is given. Specific properties of the MTF for different parameters of hologram detector are presented.
Marek J. Matczak, Leszek Pyziak
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The Modulation Transfer Function (MTF) in digital holography is discussed. Theoretical derivation of its form is given. Specific properties of the MTF for different parameters of hologram detector are presented.
Marek J. Matczak, Leszek Pyziak
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Phase shifting digital holography with the Hanbury Brown–Twiss approach
, 2019We report a phase shifting holography for coherence waves in the Hanbury Brown and Twiss approach. This technique relies on the wave nature and interference of the coherence waves in the two-point intensity correlation.
Li Chen, R. Singh, Ziyang Chen, J. Pu
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Digital Holography for Security Applications [PDF]
, 2012 A survey of Digital Holography (DH) and its employment in different application fields is provided. This paper reviews the main principles of the DH focusing on the optical techniques for security purposes. Recording and processing of three dimensional data, secured storage data, the use of Multimedia Sensor Network (MSN) for encrypted data ...
Samuela Persia +3 more
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Phase-shifting digital holography
Optics Letters, 1997A new method for three-dimensional image formation is proposed in which the distribution of complex amplitude at a plane is measured by phase-shifting interferometry and then Fresnel transformed by a digital computer. The method can reconstruct an arbitrary cross section of a three-dimensional object with higher image quality and a wider viewing angle ...
Ichirou Yamaguchi, Tong Zhang
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Introduction to Digital Holography
2009This eBook is a collection of comprehensive and cutting edge book articles written by leading experts on digital signal and image processing in general, and specifically book written by one of pioneers of digital holography, one of the foremost branches of the image sciences and modern information technology.
Leonid P. Yaroslavsky, Jaakko Astola
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Demonstration of single-shot digital holography using a Bayesian framework.
Journal of The Optical Society of America A-optics Image Science and Vision, 2018In this paper, we present experimental results for image reconstruction, with isoplanatic phase-error correction, from single-shot digital holography data.
Casey J. Pellizzari +3 more
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Fringe Pattern Improvement and Super-Resolution Using Deep Learning in Digital Holography
IEEE Transactions on Industrial Informatics, 2019Digital holographic imaging is a powerful technique that can provide wavefront information of a three-dimensional object for biological and industrial applications. However, due to the constraint and cost of imaging sensors, the acquired digital hologram
Zhenbo Ren, Hayden Kwok-Hay So, E. Lam
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Strain, 2008
Abstract: Terahertz (THz) technology is combined with digital holography for THz imaging. The characteristics of the propagation behaviour of the THz pulse in free space are investigated by using numerical simulations. The algorithm is based on the angular spectrum theory.
Wei Zhou +4 more
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Abstract: Terahertz (THz) technology is combined with digital holography for THz imaging. The characteristics of the propagation behaviour of the THz pulse in free space are investigated by using numerical simulations. The algorithm is based on the angular spectrum theory.
Wei Zhou +4 more
openaire +2 more sources