Slicer level tracing, itk::LevelTracingImageFilter

Eleonora_Tiribilli · July 11, 2022, 10:28am

Someone knows how the itk::LevelTracingImageFilter works?

I found only the header file, with no explanation Slicer/itkLevelTracingImageFilter.h at main · Slicer/Slicer · GitHub

Andinet_Enquobahrie · July 11, 2022, 11:12am

The header file comment provides an explanation

Slicer/Slicer/blob/main/Libs/vtkITK/itkLevelTracingImageFilter.h#L12-L27


      
          /** \class LevelTracingImageFilter
           * \brief Trace a level curve/surface given a seed point on the level curve/surface.
           *
           * LevelTracingImageFilter traces a level curve (or surface) from a
           * seed point.  The pixels on this level curve "boundary" are labeled
           * as 1. Does nothing if seed is in uniform area.
           *
           * LevelTracingImageFilter provides a quick method to select a point
           * on a boundary of an object in a grayscale image and retrieve the
           * entire boundary of the object.
           *
           * For 2D images, the algorithm follows the boundary using 8-connected
           * neighbors.  For ND images, the algorithm traces the boundary using
           * face connected neighbors.
           *
           */

Andinet_Enquobahrie · July 11, 2022, 11:18am

It is one of the editor effects in the Segment Editor

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Slicer level tracing, itk::LevelTracingImageFilter

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