ExampleContourDetectorSimple.cpp

Example for usage of ContourDetectorSimple Usage: ContourDetectorSimple segmentedImage distanceImage contourImage

Author

MIP

/*
  This file is part of the BIAS library (Basic ImageAlgorithmS).

  Copyright (C) 2003-2009    (see file CONTACT for details)
  Multimediale Systeme der Informationsverarbeitung
  Institut fuer Informatik
  Christian-Albrechts-Universitaet Kiel
  
  
  BIAS 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 2.1 of the License, or
  (at your option) any later version.
  
  BIAS 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 Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License
  along with BIAS; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/**
   @example ExampleContourDetectorSimple.cpp
   @relates ContourDetectorSimple
   @brief Example for usage of ContourDetectorSimple
   Usage: ContourDetectorSimple segmentedImage distanceImage contourImage
   @ingroup g_examples
   @author MIP
*/
#include "../ContourDetectorSimple.hh"
#include "Base/Image/ImageIO.hh"
#include "Base/Debug/TimeMeasure.hh"
#include "Base/Image/ImageConvert.hh"

using namespace BIAS;
using namespace std;

int main(int argc, char** argv)
{

  Image<float> image1;
 // Image<unsigned char> image1;
  //Image<unsigned char> out,contourImg;
  Image<float> out,contourImg;
  int res;
  if (argc <4) {
    cerr<<"\n*********************************************************************************************************************"<<endl;
    cerr<<"This program detects single objects in an image with black (0) background and returns all pixel of the contour of that object.\n"<<endl;
    cerr<<"usage: "<< argv[0] <<" segmentedImage distanceImage contourImage" <<endl;
    cerr<<"*********************************************************************************************************************"<<endl;
    exit(1);
  }

  if ((res=ImageIO::Load(argv[1], image1)) != 0){
    cerr << "error loading file " << argv[1] << "   " << res << endl;
    exit (-1);
  }

  if (image1.GetChannelCount() != 1){
    cerr << "wrong channel count in image"<< endl;
  }

  //ImageConvert::ConvertST(image2,image1,ImageBase::ST_unsignedchar);

  //ImageIO::Save("testtest.mip",image1);

  //ContourDetectorSimple<unsigned char> cont;
  ContourDetectorSimple<float> cont;
  cout << "Set Background" << endl;
  cont.SetBackground(0);
  //  out=image1;
  TimeMeasure timer;
  timer.Start();
  std::vector<BIASContour> contour;
  cont.Detect(image1, contour);
  timer.Stop();
  std::cout<<"Finding the contour did take: ";
  timer.PrintRealTime();
  out.Init(image1.GetWidth(), image1.GetHeight(),1);
  //out.FillImageWithConstValue((unsigned char)0);
  out.FillImageWithConstValue((float)0);
  cont.CreateDistanceImage(out,contour[0]);
  if (ImageIO::Save(argv[2], out)!=0){
    BIASERR("error writing");
  }
  cout<<"Written distance image: "<<argv[2]<<endl;

  cout<<"Contour:"<<endl;
  contourImg.Init(image1.GetWidth(), image1.GetHeight(),3);

  for (unsigned int i=0;i<contour.size();i++){
    for (unsigned int k=0;k<contour[i].length;k++){
      cout<<contour[i].contourPixel[k]<<"\t ";

      contourImg.SetPixel(255,255,255,
                          (unsigned int)contour[i].contourPixel[k][0],
                          (unsigned int)contour[i].contourPixel[k][1]);

    }
    cout<<endl;
  }


  if (ImageIO::Save(argv[3], contourImg)!=0){
    BIASERR("error writing");
  }
  cout<<"Written contour image: "<<argv[3]<<endl;
}