Tomographic images
Reconstruction of tomographic images from limited range projections using discrete Radon transform and Tchebichef moments
... Keywords: discrete Radon transform; discrete orthogonal moments; projection moments; image reconstruction 1. Introduction The issue of image reconstruction has received much attention in the medical imaging literature. ...
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Validation of pore network simulations of ex-situ water distributions in a gas diffusion layer of proton exchange membrane fuel cells with X-ray tomographic images
... Full morphology Liquid water a b s t r a c t Understanding and modeling two-phase flows in the gas diffusion layer (GDL) of proton exchange membrane fuel cells are important in order to improve fuel cells performance. ...
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Validation of pore network simulations of ex-situ water distributions in a gas diffusion layer of proton exchange membrane fuel cells with X-ray tomographic images
... Full morphology Liquid water a b s t r a c t Understanding and modeling two-phase flows in the gas diffusion layer (GDL) of proton exchange membrane fuel cells are important in order to improve fuel cells performance. ...
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A METHODOLOGY TO SEGMENT X-RAY TOMOGRAPHIC IMAGES OF MULTIPHASE POROUS MEDIA: APPLICATION TO BUILDING STONES.
... ray tomographic images of porous media stones was presented and applied to building ...the images to segment, it should then be easily generalized to tomographic images of various ...
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Simulations of one and two-phase flows in porous microstructures, from tomographic images of gas diffusion layers of proton exchange membrane fuel cells
... on tomographic images of GDL make it possible to calculate in a predictive way the properties of diffusive transports measured ...a tomographic image of a porous material than to characterize ...
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Segmentation of X-ray tomographic images : contribution to weathering analysis of building limestones originating from historical buildinds.
... Segmentation of X-ray tomographic images : contribution to weathering analysis of building limestones originating from historical buildinds.. Emmanuel Le Trong, Olivier Rozenbaum, Jean-L[r] ...
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Synthetic Tomographic Images of Slabs from Mineral Physics
... a tomographic P wave model across Japan [Karason and van der Hilst, ...of tomographic images in term of non-penetration or straight penetration is affected by the non-objective choice of the color ...
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Analysis and artifact correction for volume correlation measurements using tomographic images from a laboratory X-ray source
... The standard displacement uncertainty are compared before dilatational strain correction, rotation correction when the analysis is performed with reconstructed volumes with or without th[r] ...
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Versatile three-dimensional denoising and segmentation method of X-ray tomographic images: applications to geomaterials characterizations
... During acquisition, the sample is rotated step by step, taking a projection image at each angular position. The projection set is used as an input for the image reconstruc- tion algorithm. This is done by using a ...
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Prediction of effective thermal properties of fibrous material from 3D tomographic images
... We concentrate on ultra light wood-based/polyester composite insulator used in roof insulation. The X-ray tomography technique is used to get tridimensionnal images of the fibrous structure. The resolution is ...
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Coupling tomographic and thermographic measurements for in-situ thermo-mechanical tests
... As all the transformations T 1 , R(θ i ), T 2 and P do not change during the experiment, calibration can be performed only once. Moreover, because a very stiff ceramic material was tested, the displacement of the sample ...
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Three-dimensional foam flow resolved by fast X-ray tomographic microscopy
... Abstract – Adapting fast tomographic microscopy, we managed to capture the evolution of the local structure of the bubble network of a 3D foam flowing around a sphere. As for the 2D foam flow around a circular ...
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Development of tomographic PIV for the study of turbulent flows
... ˆ w rms [vox] 0.143 0.092 1.55 0.201 0.129 1.55 Table 6.3.5: Mean rms values of a low velocity area on the outskirts of the jet at z = 0, −2 < x < −1 and 0 < y < 3. In figure 6.3.7, the area is visualized by ...
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Deep Resistivity Tomographic Imaging of The Qualibou Caldera, Saint Lucia
... Line 9 Comparisons Past and Present As stated earlier, Greenwood and Lee employed the best available modeling capability of their day to generate a detailed resistivity model of Line 9. Figure 19 shows this 1976 model ...
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Electromagnetic Hydrophone with Tomographic System for Absolute Velocity Field Mapping
... This article introduces a technique using the Lorentz force to quantitatively map velocity and pressure fields with a spatial resolutionof less than one millimeter. Good spatial resolution is achieved by moving and ...
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Compact tomographic X-ray phase-contrast imaging of breast cancer
... We further combine quantitative phase imaging with computed tomography (CT) which enables us to investigate internal structures in 3D. Existing techniques for phase r[r] ...
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On the numerical implementation of time-reversal mirrors for tomographic imaging
... Though time-reversal mirrors were originally designed to reproduce a time-reversed version of an original wavefield, the proposed method is independent of the time direction and can be u[r] ...
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Joint-MAP Tomographic Reconstruction with Patch Similarity Based Mixture Prior Model
... produce images with higher SNR than analytic FBP reconstructions, and the reconstructed images using the proposed prior can obtain the highest SNR among all the reconstruction ...
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ECG gated tomographic reconstruction for 3-D rotational coronary angiography.
... [2] Rasche V, Movassaghi B, Grass M, et al. Automatic selection of the optimal cardiac phase for gated three-dimensional coronary X-ray angiography Acad. Radiol., vol. 13, 2006, pp 630-640. [3] Zhou J., Bousse A., Yang ...
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Cosmological Tests of General Relativity with Future Tomographic Surveys
... Future tomographic weak lensing sur- veys, like the Dark Energy Survey (DES) [4] and the Large Synoptic Survey Telescope (LSST) [5], will measure lens- ing shear and galaxy counts in many redshift slices (hence ...
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