Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Pramod K. Rastogi"'
Autor:
Pramod K. Rastogi
The speckle effect has the rare distinction of being both a nuisance and an asset to the optics community working on the development of laser-based optical methods to monitor displacements and deformations of engineering structures. Long considered t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fc861b4ace08891b9e3f98fdfd37068
https://doi.org/10.1201/9781003067061-2
https://doi.org/10.1201/9781003067061-2
Publikováno v:
Optics Communications. 249:101-107
A new generalized method for designing continuous amplitude-only pupil filters for transverse superresolution using a nonlinear programming method is presented. We emphasise the principal advantage of amplitude-only filters over their phase counterpa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1c50f6febdded54bbbda210042dea6d
https://doi.org/10.1016/j.optcom.2005.01.025
https://doi.org/10.1016/j.optcom.2005.01.025
Autor:
Pramod K. Rastogi
Holographic Interferometry provides a valuable and up-to-date source of information in the rapidly expanding field. The eight specialists` contributions cover the principles and methods currently in use. The scope of the book has been limited to the
Autor:
PRAMOD K RASTOGI
Publikováno v:
Journal of Modern Optics. 43:1577-1581
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e675d0a8f68bf1af5fb32a1d3ea2c3ec
https://doi.org/10.1080/095003496155021
https://doi.org/10.1080/095003496155021
Autor:
Chiho Makifuchi, Kazuhiro Kido, Junko Kiyohara, Tsukasa Ito, Sumiya Nagatsuka, Atsushi Momose, Pramod K. Rastogi, Erwin Hack
Publikováno v:
AIP Conference Proceedings.
The purpose of this study was to design an X‐ray Talbot‐Lau interferometer for the imaging of bone cartilage using a practical X‐ray tube and to develop that imaging system for clinical use. Wave‐optics simulation was performed to design the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc38ed5831506f97bad1741e9e4be57e
https://doi.org/10.1063/1.3426112
https://doi.org/10.1063/1.3426112
Publikováno v:
AIP Conference Proceedings.
Fourier Transform Profilometry (FTP) has been applied to three‐dimensional (3D) shape measurement for decades and then been also used to dynamic 3D measurement for a couple of years. For dynamic process, a sequence deformed fringe patterns, which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f55215ed3691f034099122cd35083fb5
https://doi.org/10.1063/1.3426148
https://doi.org/10.1063/1.3426148
Publikováno v:
AIP Conference Proceedings.
For phase estimation in digital holographic interferometry, a high‐order instantaneous moments (HIM) based method was recently developed which relies on piecewise polynomial approximation of phase and subsequent evaluation of the polynomial coeffic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00932a8f2b6e94dfdd908c5e8e0b3ffa
https://doi.org/10.1063/1.3426140
https://doi.org/10.1063/1.3426140
Publikováno v:
AIP Conference Proceedings.
The paper reviews recent applications of the Fourier transform method (FTM) of fringe pattern analysis to the measurements of extreme physical phenomena, such as those involving ultra fast optical pulses, extremely small atomic displacements, and unc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ebf7599c5f8a56433f0106d3ceccb46
https://doi.org/10.1063/1.3426157
https://doi.org/10.1063/1.3426157
Publikováno v:
AIP Conference Proceedings.
The use of phase has a long standing history in optical image processing, with early milestones being in the field of pattern recognition, such as VanderLugt’s practical construction technique for matched filters, and (implicitly) Goodman’s joint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f966b08190c315daafe10bf94e0cc0a
https://doi.org/10.1063/1.3426119
https://doi.org/10.1063/1.3426119
Publikováno v:
AIP Conference Proceedings.
Analyzer‐based imaging (ABI) is a phase‐contrast imaging technique. Several mathematical algorithms have been so far proposed to separate absorption, refraction and USAXS, in order to accurately quantify them and to ultimately facilitate the imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13416146fb25f106e6f263d1e6853016
https://doi.org/10.1063/1.3426113
https://doi.org/10.1063/1.3426113