Results 241 to 250 of about 2,784,941 (298)

Stereoscopic Digital Holography

IEEE Transactions on Plasma Science, 2010
The ability to follow the motion of individual particles in a dusty plasma is essential for most experiments on complex plasmas. However, for 3-D particle clouds, the precise determination of all particle coordinates at once is a sophisticated task.
Mattias Kroll, Lennart Muhlfeld, Dietmar Block   +2 more
openaire   +1 more source

Unconventional digital holography

Digital Holography and Three-Dimensional Imaging, 2013
Traditionally, holography requires coherent-light for object illumination and a reference beam for recording its 3-D information as a hologram. We explore the unconventional techniques for digital holography that avoid coherent-light and reference.
Dinesh N. Naik, Wolfgang Osten, Giancarlo Pedrini   +2 more
openaire   +1 more source

Digital holography

Annual Meeting Optical Society of America, 1988
Ordinary holograms are made by interference experiments, digital holograms by computer and plotter. The object does not have to exist physically. Most advantages of digital holograms derive from that fact. Fundamentals and some applications are reviewed: AO display; image processing; and testing.
openaire   +1 more source

Imaging through distributed-volume aberrations using single-shot digital holography.

Journal of The Optical Society of America A-optics Image Science and Vision, 2019
This paper explores the use of single-shot digital holography data and a novel algorithm, referred to as multiplane iterative reconstruction (MIR), for imaging through distributed-volume aberrations. Such aberrations result in a linear, shift-varying or "
Casey J. Pellizzari, M. Spencer, C. Bouman   +2 more
semanticscholar   +1 more source

Free Field of View Infrared Digital Holography for Mineral Crystallization

Crystal Growth & Design, 2023
Haochong Huang, Enhui Yuan, Dongshun Zhang, Dexin Sun, Meihui Yang, Zhiyuan Zheng, Zili Zhang, Lu Gao, S. Panezai, Kunfeng Qiu   +9 more
semanticscholar   +1 more source

Infrared digital holography

SPIE Proceedings, 2003
Digitally recorded holograms in the infrared region(10.6 Micron) are numerically reconstructed.
De Nicola S, Allaria E, Brugioni S, Ferraro P, Grilli S, Meucci R   +5 more
openaire   +3 more sources

Deep-turbulence wavefront sensing using digital holography in the on-axis phase shifting recording geometry with comparisons to the self-referencing interferometer.

Applied Optics, 2019
In this paper, we study the use of digital holography in the on-axis phase-shifting recording geometry for the purposes of deep-turbulence wavefront sensing.
Douglas E. Thornton, M. Spencer, G. Perram   +2 more
semanticscholar   +1 more source

Roadmap of incoherent digital holography

Applied physics B, 2022
T. Tahara, Yaping Zhang, Joseph Rosen, V. Anand, Liangcai Cao, Jiachen Wu, T. Koujin, A. Matsuda, A. Ishii, Y. Kozawa, Ryo Okamoto, R. Oi, Teruyoshi Nobukawa, Kihong Choi, Masatoshi Imbe, T. Poon   +15 more
semanticscholar   +1 more source

Digital holography-based steganography

Optics Letters, 2010
A steganographic method offering a high hiding capacity is presented in which the techniques of digital holography are used to distribute information from a small secret image across the larger pixel field of a cover image. An iterative algorithm is used to design a phase-only or complex hologram from a padded version of the secret image, quantizing ...
openaire   +2 more sources

Multiwavelength Digital Holography

2015
Another application of HI is the generation of a fringe pattern corresponding to contours of constant elevation with respect to a reference plane (see Fig. 7.1). Such contour fringes can be used to determine the shape of a 3D object. Holographic contour interferograms can be generated by the two-illumination-point method (discussed in Section 5.2 ...
Georges T. Nehmetallah, Rola Aylo, Logan A. Williams   +2 more
openaire   +1 more source