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74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkImageSkeleton2D.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkImageSkeleton2D
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* @brief Skeleton of 2D images.
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*
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* vtkImageSkeleton2D should leave only single pixel width lines
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* of non-zero-valued pixels (values of 1 are not allowed).
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* It works by erosion on a 3x3 neighborhood with special rules.
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* The number of iterations determines how far the filter can erode.
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* There are three pruning levels:
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* prune == 0 will leave traces on all angles...
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* prune == 1 will not leave traces on 135 degree angles, but will on 90.
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* prune == 2 does not leave traces on any angles leaving only closed loops.
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* Prune defaults to zero. The output scalar type is the same as the input.
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*/
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#ifndef vtkImageSkeleton2D_h
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#define vtkImageSkeleton2D_h
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#include "vtkImageIterateFilter.h"
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#include "vtkImagingMorphologicalModule.h" // For export macro
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class VTKIMAGINGMORPHOLOGICAL_EXPORT vtkImageSkeleton2D : public vtkImageIterateFilter
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{
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public:
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static vtkImageSkeleton2D* New();
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vtkTypeMacro(vtkImageSkeleton2D, vtkImageIterateFilter);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* When prune is on, only closed loops are left unchanged.
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*/
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vtkSetMacro(Prune, vtkTypeBool);
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vtkGetMacro(Prune, vtkTypeBool);
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vtkBooleanMacro(Prune, vtkTypeBool);
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//@}
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/**
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* Sets the number of cycles in the erosion.
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*/
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void SetNumberOfIterations(int num) override;
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protected:
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vtkImageSkeleton2D();
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~vtkImageSkeleton2D() override {}
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vtkTypeBool Prune;
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int IterativeRequestUpdateExtent(vtkInformation* in, vtkInformation* out) override;
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void ThreadedRequestData(vtkInformation* request, vtkInformationVector** inputVector,
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vtkInformationVector* outputVector, vtkImageData*** inDataV, vtkImageData** outDataV,
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int outExt[6], int id) override;
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private:
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vtkImageSkeleton2D(const vtkImageSkeleton2D&) = delete;
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void operator=(const vtkImageSkeleton2D&) = delete;
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};
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#endif
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