imageSetDT.cpp File Reference

#include <iostream>
#include <fstream>
#include <algorithm>
#include <boost/algorithm/minmax_element.hpp>
#include "DGtal/base/Common.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/base/BasicFunctors.h"
#include "DGtal/kernel/BasicPointPredicates.h"
#include "DGtal/kernel/sets/DigitalSetInserter.h"
#include "DGtal/images/ImageContainerBySTLVector.h"
#include "DGtal/images/ImageHelper.h"
#include "DGtal/geometry/volumes/distance/DistanceTransformation.h"
#include "DGtal/images/IntervalForegroundPredicate.h"
#include "DGtal/io/boards/Board2D.h"
#include "DGtal/io/readers/PGMReader.h"
#include "DGtal/io/colormaps/HueShadeColorMap.h"
#include "DGtal/io/colormaps/GrayscaleColorMap.h"
#include "ConfigExamples.h"

Include dependency graph for imageSetDT.cpp:

Go to the source code of this file.

Functions
int	main ()

Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author

David Coeurjolly (david.nosp@m..coe.nosp@m.urjol.nosp@m.ly@l.nosp@m.iris..nosp@m.cnrs.nosp@m..fr)

Date

2010/12/01

An example of DT computation from a digital set extracted from an image.

This file is part of the DGtal library.

Definition in file imageSetDT.cpp.

Function Documentation

main()

int main

(

void

)

[ImageSetDT-types]

[ImageSetDT-types]

[ImageSetDT-image]

[ImageSetDT-image]

[ImageSetDT-board1]

[ImageSetDT-board1]

[ImageSetDT-DT]

[ImageSetDT-DT]

[ImageSetDT-DTvis]

[ImageSetDT-DTvis]

Definition at line 62 of file imageSetDT.cpp.

{
  typedef DGtal::ImageContainerBySTLVector< Z2i::Domain, unsigned char> Image;
  typedef DGtal::GrayscaleColorMap<unsigned char> Gray;
 
 
  std::string filename =  examplesPath + "samples/contourS.pgm";
  Image image = DGtal::PGMReader<Image>::importPGM(filename); 
  DGtal::trace.info() << "Imported image: "<<image<<std::endl;
 
 
  DGtal::Board2D aBoard;
  aBoard << image.domain();  
  aBoard.saveSVG("imageDomainTuto.svg");
  aBoard.clear();
  Display2DFactory::drawImage<Gray>(aBoard, image, (unsigned char)0, (unsigned char)255);
  aBoard.saveEPS("imageDomainTuto2.eps");
 
 
  Z2i::DigitalSet mySet(image.domain());
  DigitalSetInserter<Z2i::DigitalSet> inserter(mySet); 
  setFromImage(image, inserter, 1, 135);
  aBoard.clear();
  aBoard << mySet.domain()
         << mySet;
  aBoard.saveEPS("imageDomainTuto2bis.eps");
 
 
  typedef functors::IntervalForegroundPredicate<Image> Binarizer; 
  Binarizer b(image,1, 135); 
  typedef DGtal::DistanceTransformation<Z2i::Space, Binarizer, Z2i::L2Metric> DTL2;
  DTL2 dt(&image.domain(),&b, &Z2i::l2Metric );
 
 
  DTL2::Value maxDT = (*boost::first_max_element(dt.constRange().begin(), 
                                                 dt.constRange().end(), std::less<DTL2::Value>() ));
  typedef DGtal::HueShadeColorMap<DTL2::Value,2> HueTwice;
 
  aBoard.clear();
  Display2DFactory::drawImage<HueTwice>(aBoard, dt, (DTL2::Value)0, 
                                        (DTL2::Value)maxDT);
  aBoard.saveEPS("imageDomainTuto3.eps");
 
  return 0;
 
}

References LibBoard::Board::clear(), DGtal::DigitalSetByAssociativeContainer< TDomain, TContainer >::domain(), DGtal::Display2DFactory::drawImage(), dt, DGtal::PGMReader< TImageContainer, TFunctor >::importPGM(), DGtal::Trace::info(), DGtal::Z2i::l2Metric, LibBoard::Board::saveEPS(), LibBoard::Board::saveSVG(), DGtal::setFromImage(), and DGtal::trace.