[Insight-users] active contour, snake, deformable model and level set segmentation ???

[Luis Ibanez]

Hi Juliette,


Your observations are correct.

If you are looking for a mesh-based implementation of a deformable 
model, then you should look at
http://www.itk.org/Insight/Doxygen/html/classitk_1_1DeformableSimplexMesh3DBalloonForceFilter.html


and its example application in

     InsightApplications/DeformableModelSimplexMesh


This is closer to what is known as "Snakes" in the medical field.

The Level Set implementations of deformable models have all
the "LevelSet" string as part of their name.


They will be:


$ find . -name "*LevelSetImageFilter.h"
./itkAnisotropicFourthOrderLevelSetImageFilter.h
./itkCannySegmentationLevelSetImageFilter.h
./itkCurvesLevelSetImageFilter.h
./itkGeodesicActiveContourLevelSetImageFilter.h
./itkGeodesicActiveContourShapePriorLevelSetImageFilter.h
./itkIsotropicFourthOrderLevelSetImageFilter.h
./itkLaplacianSegmentationLevelSetImageFilter.h
./itkNarrowBandCurvesLevelSetImageFilter.h
./itkNarrowBandLevelSetImageFilter.h
./itkNarrowBandThresholdSegmentationLevelSetImageFilter.h
./itkSegmentationLevelSetImageFilter.h
./itkShapeDetectionLevelSetImageFilter.h
./itkShapePriorSegmentationLevelSetImageFilter.h
./itkThresholdSegmentationLevelSetImageFilter.h
./itkUnsharpMaskLevelSetImageFilter.h
./itkVectorThresholdSegmentationLevelSetImageFilter.h



Please let us know if you have further questions,


     Thanks


        Luis



------------------------
Juliette Deniau wrote:
> Hi All,
> 
> I’m confused about what type of segmentation methods are within itk, in 
> particular the ones related to active contour and level set?
> 
> In my understanding, active contour is the same as a deformable model 
> and the same as a snake. The levelset segmentation is another type (use 
> a PDE to evolve the curve).
> 
> In itk there are some active contours implemented with the level set 
> framework like the CurvesLevelSetImageFilter, I’m alright?
> 
> Can any one tell me what are the segmentation filters which are purely 
> active contour (snake) and those which use level set to evolve the curve?  
> 
> Sorry if my question is too stupid!
> 
> Thanks a lot
> 
> Juliette
> 
> 
> 
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