Searched for: subject%3A%22Image%255C+reconstruction%255C+techniques%22
(1 - 6 of 6)
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Dwivedi, P. (author), Konijnenberg, A.P. (author), Pereira, S.F. (author), Meisner, J.A. (author), Urbach, Paul (author)
Ptychography is a form of coherent diffractive imaging; it employs far-field intensity patterns of the object to reconstruct the object. In ptychography, an important limiting factor for the reconstructed image quality is the uncertainty in the probe positions. Here, we propose a new approach which uses the hybrid input-output algorithm and...
journal article 2019
document
Trull, A.K. (author), van der Horst, J. (author), Palenstijn, W.J. (author), van Vliet, L.J. (author), van Leeuwen, Tristan (author), Kalkman, J. (author)
As a result of the shallow depth of focus of the optical imaging system, the use of standard filtered back projection in optical projection tomography causes space-variant tangential blurring that increases with the distance to the rotation axis. We present a novel optical tomographic image reconstruction technique that incorporates the point...
journal article 2017
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Dwivedi, P. (author), Konijnenberg, A.P. (author), Pereira, S.F. (author), Urbach, Paul (author)
For high resolution imaging, X-rays and electron beams are being used. However, for such a short wavelength, imaging with lenses becomes difficult as lenses absorb a part of radiation and lenses with very low aberrations must be used. Ptychography is a lens-less imaging technique which uses intensity information of the multiple diffraction...
conference paper 2017
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Gnanadesigan, M. (author), Van Soest, G. (author), White, S. (author), Scoltock, S. (author), Ughi, G.J. (author), Baumbach, A. (author), Van der Steen, A.F.W. (author), Regar, E. (author), Johnson, T.W. (author)
Atherosclerotic plaque composition can be imaged using the optical attenuation coefficient derived from intravascular optical coherence tomography (OCT) data. The relation between optical properties and tissue type has been established on autopsy tissues. In this study, we validate an ex-vivo model for the effect of temperature and tissue...
journal article 2014
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Korkiakoski, V. (author), Keller, C.U. (author), Doelman, N. (author), Fraanje, P.R. (author), Verhaegen, M.H.G. (author)
We study different possibilities to use adaptive optics (AO) and phase diversity (PD) together in a jointly optimized system. The potential of the joint system is demonstrated through numerical simulations. We find that the most significant benefits are obtained from the improved deconvolution of AO-corrected wavefronts and the additional...
journal article 2011
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Mata Pavia, J. (author), Charbon, E. (author), Wolf, M. (author)
An imager for optical tomography was designed based on a detector with 128x128 single-photon pixels that included a bank of 32 time-to-digital converters. Due to the high spatial resolution and the possibility of performing time resolved measurements, a new contact-less setup has been conceived in which scanning of the object is not necessary....
conference paper 2011
Searched for: subject%3A%22Image%255C+reconstruction%255C+techniques%22
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