volScanBoundary.cpp File Reference

#include <iostream>
#include <queue>
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/io/readers/VolReader.h"
#include "DGtal/io/Color.h"
#include "DGtal/images/ImageSelector.h"
#include "DGtal/images/imagesSetsUtils/SetFromImage.h"
#include "DGtal/shapes/Shapes.h"
#include "DGtal/topology/helpers/Surfaces.h"
#include "DGtal/io/viewers/PolyscopeViewer.h"

Include dependency graph for volScanBoundary.cpp:

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Functions
void	usage (int, char **argv)
int	main (int argc, char **argv)

Detailed Description

Author

Jacques-Olivier Lachaud (jacqu.nosp@m.es-o.nosp@m.livie.nosp@m.r.la.nosp@m.chaud.nosp@m.@uni.nosp@m.v-sav.nosp@m.oie..nosp@m.fr ) Laboratory of Mathematics (CNRS, UMR 5127), University of Savoie, France

Date

2012/02/06

An example file named volScanBoundary.

This file is part of the DGtal library.

Definition in file volScanBoundary.cpp.

Function Documentation

main()

int main	(	int	argc,
		char **	argv )

[volScanBoundary-readVol]

[volScanBoundary-readVol]

[volScanBoundary-KSpace]

[volScanBoundary-KSpace]

[volScanBoundary-ExtractingSurface]

[volScanBoundary-ExtractingSurface]

[volScanBoundary-DisplayingSurface]

[volScanBoundary-DisplayingSurface]

Definition at line 65 of file volScanBoundary.cpp.

{
  if ( argc < 4 )
    {
      usage( argc, argv );
      return 1;
    }
  std::string inputFilename = argv[ 1 ];
  unsigned int minThreshold = atoi( argv[ 2 ] );
  unsigned int maxThreshold = atoi( argv[ 3 ] );

  trace.beginBlock( "Reading vol file into an image." );
  typedef ImageSelector < Domain, int>::Type Image;
  Image image = VolReader<Image>::importVol(inputFilename);
  DigitalSet set3d (image.domain());
  SetFromImage<DigitalSet>::append<Image>(set3d, image,
                                          minThreshold, maxThreshold);
  trace.endBlock();
 

  trace.beginBlock( "Construct the Khalimsky space from the image domain." );
  KSpace ks;
  bool space_ok = ks.init( image.domain().lowerBound(),
                           image.domain().upperBound(), true );
  if (!space_ok)
    {
      trace.error() << "Error in the Khamisky space construction."<<std::endl;
      return 2;
    }
  trace.endBlock();

  trace.beginBlock( "Extracting boundary by scanning the space. " );
  KSpace::SCellSet boundary;
  Surfaces<KSpace>::sMakeBoundary( boundary, ks, set3d,
                                   image.domain().lowerBound(),
                                   image.domain().upperBound() );
  trace.endBlock();

  trace.beginBlock( "Displaying surface in PolyscopeViewer." );
  PolyscopeViewer<> viewer( ks );
  KSpace::SCell dummy_scell;
  viewer.currentStyle.mode |= DisplayStyle::SIMPLIFIED;
  viewer << Color( 128, 128, 128 );
  unsigned long nbSurfels = 0;
  for ( KSpace::SCellSet::const_iterator it = boundary.begin(),
          it_end = boundary.end(); it != it_end; ++it, ++nbSurfels )
    viewer << *it;
  trace.info() << "nb surfels = " << nbSurfels << std::endl;
  trace.endBlock();
  viewer.show();
  return 0;
}

References DGtal::SetFromImage< TSet >::append(), DGtal::Display3D< Space, KSpace >::currentStyle, image(), DGtal::VolReader< TImageContainer, TFunctor >::importVol(), DGtal::KhalimskySpaceND< dim, TInteger >::init(), DGtal::DisplayStyle::mode, DGtal::PolyscopeViewer< Space, KSpace >::show(), DGtal::DisplayStyle::SIMPLIFIED, DGtal::Surfaces< TKSpace >::sMakeBoundary(), DGtal::trace, and usage().

usage()

void usage	(	int	,
		char **	argv )

Definition at line 58 of file volScanBoundary.cpp.

{
  std::cerr << "Usage: " << argv[ 0 ] << " <fileName.vol> <minT> <maxT>" << std::endl;
  std::cerr << "\t - displays the boundary of the shape stored in vol file <fileName.vol>." << std::endl;
  std::cerr << "\t - voxel v belongs to the shape iff its value I(v) follows minT <= I(v) <= maxT." << std::endl;
}