Results 91 to 100 of about 1,077,090 (202)

The Theory of Diffraction Tomography [PDF]

arXiv, 2015
Tomography is the three-dimensional reconstruction of an object from images taken at different angles. The term classical tomography is used, when the imaging beam travels in straight lines through the object. This assumption is valid for light with short wavelengths, for example in x-ray tomography.
arxiv  

Neural networks for calibration tomography [PDF]

Artificial neural networks are suitable for performing pattern-to-pattern calibrations. These calibrations are potentially useful for facilities operations in aeronautics, the control of optical alignment, and the like.
Decker, Arthur
core   +1 more source

In-situ Analysis of Laminated Composite Materials by X-ray Micro-Computed Tomography and Digital Volume Correlation [PDF]

, 2013
The complex mechanical behaviour of composite materials, due to internal heterogeneity and multi-layered composition impose deeper studies. This paper presents an experimental investigation technique to perform volume kinematic measurements in composite ...
A Germaneau, A Germaneau, A Germaneau, A. Germaneau, B Bay, E Reissner, E Verhulp, F Forsberg, G Kirchhoff, J Buffière, J Buffière, J Mantari, J Reddy, J. C. Dupré, K Tan, L Dufort, L Feldkamp, L Salvo, M Bornert, M Gates, M Karama, M Karama, M Sutton, M Sutton, M Touratier, M. Fazzini, P Latil, P. Doumalin, PJ Schilling, R. Brault, S Choi, S Roux, S. Mistou   +32 more
core   +2 more sources

Stored Luminescence Computed Tomography [PDF]

, 2013
The phosphor nanoparticles made of doped semiconductors, pre-excited by well-collimated X-ray radiation, were recently reported for their light emission upon NIR light stimulation. The characteristics of X-ray energy storage and NIR stimulated emission is highly desirable to design targeting probes and improve molecular and cellular imaging.
arxiv   +1 more source

Synchrotron‐source micro‐x‐ray computed tomography for examining butterfly eyes

Ecology and Evolution
Comparative anatomy is an important tool for investigating evolutionary relationships among species, but the lack of scalable imaging tools and stains for rapidly mapping the microscale anatomies of related species poses a major impediment to using ...
Dawn Paukner, Gregg A. Wildenberg, Griffin S. Badalamente, Peter B. Littlewood, Marcus R. Kronforst, Stephanie E. Palmer, Narayanan Kasthuri   +6 more
doaj   +1 more source

Multi-view polarimetric scattering cloud tomography and retrieval of droplet size [PDF]

arXiv, 2020
Tomography aims to recover a three-dimensional (3D) density map of a medium or an object. In medical imaging, it is extensively used for diagnostics via X-ray computed tomography (CT). Optical diffusion tomography is an alternative to X-ray CT that uses multiply scattered light to deliver coarse density maps for soft tissues.
arxiv  

Ten recommendations for scanning foraminifera by X-ray computed tomography [PDF]

Journal of Micropalaeontology
Marine sediment cores uniquely provide a temporally high-resolution and well-preserved archive of foraminifera fossils, which are essential for understanding environmental, ecological, and evolutionary dynamics over geological timescales.
A. Searle-Barnes, A. Brombacher, A. Brombacher, O. Katsamenis, O. Katsamenis, K. Rankin, M. Mavrogordato, T. Ezard   +7 more
doaj   +1 more source

Salt crystallization dynamics in building rocks: a 4D study using laboratory X-ray micro-CT [PDF]

, 2015
We employ laboratory X-ray micro-computed tomography (μCT) during climate-controlled salt weathering experiments to acquire data on the kinetics of drying and salt precipitation and the distribution of crystals within the pore space of Mšené sandstone ...
Boone, Marijn, Boone, Matthieu, Cnudde, Veerle, De Kock, Tim, De Miranda, Stefano, Derluyn, Hannelore, Desarnaud, Julie, Molari, Lisa, Peetermans, Steven, Shahidzadeh, Noushine   +9 more
core  

Undersampled dynamic X-ray tomography with dimension reduction Kalman filter [PDF]

arXiv, 2018
In this paper, we consider prior-based dimension reduction Kalman filter for undersampled dynamic X-ray tomography. With this method, the X-ray reconstructions are parameterized by a low-dimensional basis. Thus, the proposed method is a) computationally very light; and b) extremely robust as all the computations can be done explicitly.
arxiv  

Development of Focused X-ray Luminescence Compute Tomography Imaging [PDF]

arXiv
X-ray luminescence is produced when contrast agents absorb energy from X-ray photons and release a portion of that energy by emitting photons in the visible and near-infrared range. X-ray luminescence computed tomography (XLCT) was introduced in the past decade as a hybrid molecular imaging modality combining the merits of both X-ray imaging (high ...
arxiv