Image-based meshing: Difference between revisions

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'''Image-based meshing''' is the automated process of creating computer models for [[computational fluid dynamics]] (CFD) and [[Finite element method|finite element analysis]] (FEA) from 3D image data (such as [[magnetic resonance imaging]] (MRI), [[computed tomography]] (CT) or [[microtomography]]). Although a wide range of [[mesh generation]] techniques are currently available, these were usually developed to generate models from [[computer-aided design]] (CAD), and therefore have difficulties meshing from 3D imaging data.

==Mesh generation from 3D imaging data==

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===Image-based approach===

This approach is the more direct way as it combines the geometric detection and mesh creation stages in one process which offers a more robust and accurate result than meshing from surface data. Voxel conversion technique providing meshes with brick elements <ref>Fyhrie et al, 1993. The probability distribution of trabecular level strains for vertebral cancellous bone. Transactions of the 39th Annual Meeting of the Orthopaedic Research Society, San Francisco.</ref> and with tetrahedral elements <ref>Frey et al, 1994. Fully automatic mesh generation for 3-D domains based upon voxel sets. ''International Journal of Methods in Engineering'', 37, 2735–2753.</ref> have been proposed.

Another approach generates 3D hexahedraltetrahedral or tetrahedral elements throughout the volume of the ___domain, thus creating the mesh directly with conforming multipart surfaces. <ref>Young et al, 2008. An efficient approach to converting 3D image data into highly accurate computational models. ''Philosophical Transactions of the Royal Society A'', 366, 3155&ndash;3173.</ref>

==Generating a model==

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* [[Soil science]]

* [[Petrophysics]]

==See also==

*[[Image segmentation]]

==References==

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==External links==

* [https://www.computing-objects.com/ Computing-Objects] commercial C++ libraries for mesh generation & FEM computation

* [[ScanIP]] commercial image-based meshing software: [http://www.simpleware.com www.simpleware.com]#

* [[MimicsScanIP]] 3Dcommercial image-based engineeringmeshing software for FEA and CFD on anatomical data: [http://www.materialisesimpleware.com/mimics Mimics websitewww.simpleware.com]

* Mimics 3D image-based engineering software for FEA and CFD on anatomical data: [http://www.materialise.com/mimics Mimics website] {{Webarchive|url=https://web.archive.org/web/20110212150457/http://www.materialise.com/mimics |date=2011-02-12 }}

* Google group on image-based modelling: [http://groups.google.co.uk/group/image-based-modelling]

* [[Avizo (software)|Avizo Software]]'s 3D image-based meshing tools for CFD and FEA

* iso2mesh: a free 3D surface and volumetric mesh generator for matlab/octave [httphttps://iso2mesh.sourceforge.net/]

* [http://www.ctcms.nist.gov/oof/ OOF3D], object oriented finite element analysis from the [[NIST]]

* [https://www.volumegraphics.com/en/products/vgstudio-max/add-on-modules-for-simulation.html VGSTUDIO MAX], Commercial CT analysis software for industry. They offer an add-on module for FEM meshing.

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[[Category:Mesh generation]]