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Toolbox Fast Marching 1.0

  Date Added: April 28, 2013  |  Visits: 216

Toolbox Fast Marching

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The Fast Marching algorithm, introduced by Sethian (1996) is a numerical algorithm that is able to catch the viscosity solution of the Eikonal equation |grad(D)|=P. The level set {x F(x)=t} can be seen as a front advancing with speed P(x). The resulting function D is a distance function, and if the speed P is constant, it can be seen as the distance function to a set of starting points. The Fast Marching is very similar to the Dijkstra algorithm that finds shortest paths on graphs. Using a gradient descent of the distance function D, one is able to extract a good approximation of the shortest path (geodesic) in various settings (euclidean for P constant, and a weighted riemanian manifold with P varying). The main reference about the Fast Marching algorithm is the book Level Set Methods and Fast Marching Methods Evolving Interfaces in Computational Geometry, Fluid Mechanics, Computer Vision, and Materials Science J.A. Sethian, Cambridge University Press, 1999 Cambridge Monograph on Applied and Computational Mathematics A good review of the Fast Marching in 3D together with some applications can be found in Fast extraction of minimal paths in 3D images and application to virtual endoscopy. T.Deschamps and L.D. Cohen. September 2000. To appear in Medical Image Analysis. The functions 'perform_fast_marching_2d', 'perform_fast_marching_3d' and 'perform_fast_marching_mesh' compute the distance function from a set of starting points. To extract the geodesics between these starting points and an ending point, you can use 'extract_path_2d' and 'extract_path_3d'.The main computation are done in a mex file so it is very fast (using a C++ heap structure). Precompiled version (.dll) for Windows are given.

Requirements: No special requirements
Platforms: Matlab
Keyword: Application Applications Endoscopy Extraction Found Images Minimal Review Virtual
Users rating: 0/10

License: Shareware Size: 5.8 MB
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