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DISCRETE TOMOGRAPHIC RECONSTRUCTION OF BINARY IMAGES WITH DISJOINT COMPONENTS USING SHAPE INFORMATION

PÉTER BALÁZS
2008 International journal of shape modeling  
We present a general framework for reconstructing binary images with disjoint components from the horizontal and vertical projections.  ...  Thus, a priori knowledge about the components of the image to be reconstructed can be incorporated into the reconstruction process.  ...  A preliminary version of this work was presented at the International Symposium on Visual Computing, Las Vegas, NV, 2008, Special Track on Discrete and Computational Geometry and their Applications in  ... 
doi:10.1142/s0218654308001142 fatcat:ekghd3agjrdixiygz3wb3siz3y

Discrete tomography in neutron radiography

Attila Kuba, Lajos Rodek, Zoltán Kiss, László Ruskó, Antal Nagy, Márton Balaskó
2005 Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment  
Using discreteness and some a priori information (such as an approximate shape of the object) we can apply two DT methods in neutron imaging by reducing the problem to an optimization task.  ...  Discrete tomography (DT) is an imaging technique for reconstructing discrete images from their projections using the knowledge that the object to be reconstructed contains only a few homogeneous materials  ...  Acknowledgements This work was supported by the NSF grant DMS 0306215 (Aspects of Discrete Tomography).  ... 
doi:10.1016/j.nima.2005.01.164 fatcat:m2746gc3brezlpbvyqvamfhkte

Method of evaluating image-recovery algorithms based on task performance

K. M. Hanson
1990 Optical Society of America. Journal A: Optics, Image Science, and Vision  
The usefulness of this method is demonstrated through a study of the algebraic reconstruction technique (ART), a tomographic reconstruction algorithm that reconstructs images from their projections.  ...  A method of evaluating image-recovery algorithms is presented that is based on the numerical computation of how well a specified visual task can be performed on the basis of the reconstructed images.  ...  between performing binary discrimination tasks on the basis of directly measured data as opposed to using reconstructed images.  ... 
doi:10.1364/josaa.7.001294 fatcat:iyhivpz3ufbubfztsczouc56z4

Detection of Lesions in Colonoscopic Images: A Review [chapter]

S. Ameling, S. Wirth, N. Shevchenko, T. Wittenberg, D. Paulus, C. Münzenmayer
2009 International Federation for Medical and Biological Engineering Proceedings  
Colonoscopy is one of the best methods for screening colon cancer and still is the "gold standard" despite advancements in the field of virtual endoscopy based on computer-tomographic imaging.  ...  As the automatic detection of polyps in endoscopic images is a challenging task for image processing, a variety of research groups have proposed methods that try to fulfill this task to develop a system  ...  The first error is hard to tackle with computer systems, as it addresses 3D-reconstruction of non-rigid shapes from only one camera.  ... 
doi:10.1007/978-3-642-03882-2_265 fatcat:4afwbmdufjgodhiehvcgrwlxom

A geometric partitioning method for distributed tomographic reconstruction

J.W. Buurlage, R.H. Bisseling, K.J. Batenburg
2019 Parallel Computing  
Tomography is a powerful technique for 3D imaging of the interior of an object.  ...  With the growing sizes of typical tomographic data sets, the computational requirements for algorithms in tomography are rapidly increasing.  ...  The experiments supporting this work were carried out on the Dutch national e-infrastructure with the support of SURF Cooperative. Declarations of interest: none.  ... 
doi:10.1016/j.parco.2018.12.007 fatcat:5v4c2d6fxfashha4jjgegfwzhm

Making Binary Decisions Based on the Posterior Probability Distribution Associated with Tomographic Reconstructions [chapter]

Kenneth M. Hanson
1992 Maximum Entropy and Bayesian Methods  
An optimal solution to the problem of making binary decisions about a local region of a reconstruction is provided by the Bayesian method.  ...  In the present work, this full treatment is approximated by using the maximum value of the posterior probability obtained when the exterior region is varied with the interior fixed at each hypothesized  ...  This work was supported by the United States Department of Energy under contract number W-7405-ENG-36.  ... 
doi:10.1007/978-94-017-2219-3_23 fatcat:ia3q3dnijvb6blzxbmnjd4cnwy

Simultaneous object estimation and image reconstruction in a Bayesian setting

Kenneth M. Hanson, Mehmet R. Civanlar, Sanjit K. Mitra, Robert J. Moorhead II
1991 Image Processing Algorithms and Techniques II  
A Monte Carlo procedure is employed to evaluate the usefulness of the technique in a signal-known-exactly detection task in a noisy four-view tomographic reconstruction situation.  ...  P(fl1) encompasses the full prior information about the relative frequency of occurrences of all hypotheses.  ...  Now the parameters in the problem are not the full set of image values f, but rather ft, the image values in the disjoint exterior region ,and a.  ... 
doi:10.1117/12.45382 fatcat:pgpwtfl3q5bxvdkxmztqlb3jpq

Stochastic 3D modeling of Ostwald ripening at ultra-high volume fractions of the coarsening phase

A Spettl, R Wimmer, T Werz, M Heinze, S Odenbach, C E Krill, V Schmidt
2015 Modelling and Simulation in Materials Science and Engineering  
Using this information we developed a stochastic simulation model for the 3D morphology of the coarsening grains at arbitrary time steps.  ...  An evaluation shows that even with this minimal information the stochastic model yields an excellent representation of the statistical properties of the experimental data.  ...  Molodov of the Institute of Physical Metallurgy and Metal Physics, RWTH Aachen, for sample preparation and to M. Scheel (ESRF) and L.  ... 
doi:10.1088/0965-0393/23/6/065001 fatcat:zh3ybx5hdncabfzzp7lj3t4pze

Characterising the Morphology of Disordered Materials [chapter]

Christoph H. Arns, Mark A. Knackstedt, Klaus R. Mecke
2002 Lecture Notes in Physics  
One can define a set of measures for random composite media from a single image at any phase fraction φ which allows one to accurately reconstruct the medium for all other phase fractions and to predict  ...  imaging; samples include a suite of Fontainebleau sandstone, and a heterogeneous cross-bedded sandstone.  ...  We use a kriging-based thresholding method [37] to give a binary pore-solid image [23, 24] .  ... 
doi:10.1007/3-540-45782-8_2 fatcat:z5ib7nstnng3feq4hs3eagale4

Mixed Confidence Estimation for Iterative CT Reconstruction

David S. Perlmutter, Soo Mee Kim, Paul E. Kinahan, Adam M. Alessio
2016 IEEE Transactions on Medical Imaging  
Dynamic (4D) CT imaging is used in a variety of applications, but the two major drawbacks of the technique are its increased radiation dose and longer reconstruction time.  ...  We also propose a fast approximation of the variance of images reconstructed with MCE and confirm that this approximation is accurate compared to analytic calculations of and multi-realization image variance  ...  This work is supported by the National Institutes of Health under grants R01-HL109327 and R01-CA115870.  ... 
doi:10.1109/tmi.2016.2543141 pmid:27008663 pmcid:PMC5270602 fatcat:yqmzt2jagffxzn6f3r3re3zh4i

A feasibility study of full-field X-ray orientation microscopy at the onset of deformation twinning

Nicola Viganò, Laura Nervo, Lorenzo Valzania, Gaurav Singh, Michael Preuss, Kees Joost Batenburg, Wolfgang Ludwig
2016 Journal of Applied Crystallography  
The simultaneous reconstruction of disjoint orientation domains requires appropriate scaling of the scattering intensities based on structure and Lorentz factors and yields three-dimensional reconstructions  ...  enable simultaneous reconstruction of parent and twin orientations and to account for the finite impulse response of the X-ray imaging detector.  ...  NV and WL acknowledge the financial support of the French National Research Agency (ANR), project ANR 2010 BLAN 0935. MP and LN acknowledge financial support from EPSRC, UK (EP/F020910/1).  ... 
doi:10.1107/s1600576716002302 fatcat:2kxlwfjtkndxlbptbzjer2nxyi

Skeletonization via Local Separators [article]

Andreas Bærentzen, Eva Rotenberg
2020 arXiv   pre-print
The main benefits of this approach are that it is able to capture relatively fine details and that it works robustly on a range of shape representations.  ...  Such representations include meshes, volumetric shapes, and graphs computed from point clouds.  ...  We thank Aasa Feragen and Rasmus Reinhold Paulsen for their many useful comments and ideas on the exposition of the paper.  ... 
arXiv:2007.03483v2 fatcat:5moc7fn3q5ekjgnwa4lvo5j5iy

Supplementary data/materials for the article: "Alkali-silica reaction products and cracks: X-ray micro-tomography-based analysis of their spatial-temporal evolution at a mesoscale"

Mahdieh Shakoorioskooie
2021 Zenodo  
Supplementary data/materials for the article: "Alkali-silica reaction products and cracks: X-ray micro-tomography-based analysis of their spatial-temporal evolution at a mesoscale" by Mahdieh Shakoorioskooiea  ...  Each 2D image, called "tomographic slice", is a 2D digital cross-section of the volume "tomographically" reconstructed and, in our case, it was approximately orthogonal to the longitudinal direction of  ...  The tomographic reconstruction was carried out using a GPU-optimized cone beam filtered back-projection algorithm [6] provided by RX Solutions (XACT software, Ver. 1.1).  ... 
doi:10.5281/zenodo.5206839 fatcat:g5oqmuglyzdz3dcpyns2ugvsg4

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Mahdieh Shakoorioskooie
2021 Zenodo  
Supplementary data/materials for the article: "Alkali-silica reaction products and cracks: X-ray micro-tomography-based analysis of their spatial-temporal evolution at a mesoscale" by Mahdieh Shakoorioskooiea  ...  The tomographic reconstruction was carried out using a GPU-optimized cone beam filtered back-projection algorithm [6] S2.2 X-ray attenuation contrast of ASR products doped with alkalis In order to  ...  Each 2D image, called "tomographic slice", is a 2D digital cross-section of the volume "tomographically" reconstructed and, in our case, it was approximately orthogonal to the longitudinal direction of  ... 
doi:10.5281/zenodo.4815513 fatcat:dc7fni4p7jahhiibemmp5j3zmu

The Maximum Entropy Formulation of Inverse Problems of NDE [chapter]

R. M. Bevensee
1983 Review of Progress in Quantitative Nondestructive Evaluation  
(a) object defined on a 20x20 grid of binary pixels, (b) image, (c) resolution with ~ = 10 7 .  ...  tomographic and geotomographic inversion, 5 the real (or i~aginary) part of the scattered field uS in (12) is used to resolve 8 by interpreting the left side of (12) as the "ray" transmitted along the  ... 
doi:10.1007/978-1-4613-3706-5_60 fatcat:sbmnvgsk2fgrvnirhqfupnkioy
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