vpMeTracker.cpp

/****************************************************************************
*
* $Id: vpMeTracker.cpp 3672 2012-04-04 15:49:57Z ayol $
*
* This file is part of the ViSP software.
* Copyright (C) 2005 - 2012 by INRIA. All rights reserved.
* 
* This software is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.txt at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using ViSP with software that can not be combined with the GNU
* GPL, please contact INRIA about acquiring a ViSP Professional 
* Edition License.
*
* See http://www.irisa.fr/lagadic/visp/visp.html for more information.
* 
* This software was developed at:
* INRIA Rennes - Bretagne Atlantique
* Campus Universitaire de Beaulieu
* 35042 Rennes Cedex
* France
* http://www.irisa.fr/lagadic
*
* If you have questions regarding the use of this file, please contact
* INRIA at visp@inria.fr
* 
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*
* Description:
* Moving edges.
*
* Authors:
* Andrew Comport
*
*****************************************************************************/

#include <visp/vpMeTracker.h>
#include <visp/vpDisplay.h>
#include <visp/vpColor.h>

#include <visp/vpTrackingException.h>
#include <visp/vpDebug.h>
#include <algorithm>

#define DEBUG_LEVEL1 0
#define DEBUG_LEVEL2 0

void
vpMeTracker::init()
{
  vpTracker::init()  ;
  p.resize(2) ;
  selectDisplay = vpMeSite::NONE ;
}

vpMeTracker::vpMeTracker()
{
  init();
  me = NULL ;
  nGoodElement = 0;
  init_range = 1;
  
  #ifdef VISP_BUILD_DEPRECATED_FUNCTIONS
  query_range = 0;
  display_point = false ;
  #endif
}

vpMeTracker::vpMeTracker(const vpMeTracker& meTracker):vpTracker(meTracker)
{
  init();

  me = meTracker.me;
  list = meTracker.list;
  nGoodElement = meTracker.nGoodElement;
  init_range = meTracker.init_range;
  selectDisplay = meTracker.selectDisplay;
  
  #ifdef VISP_BUILD_DEPRECATED_FUNCTIONS
  display_point = meTracker.display_point;
  query_range = meTracker.query_range;
  #endif
}

vpMeTracker::~vpMeTracker()
{
  list.clear();
}

vpMeTracker&
vpMeTracker::operator = (vpMeTracker& p)
{
  list = p.list;
  me = p.me;
  selectDisplay = p.selectDisplay ;

  return *this;
}

static bool isSuppressZero(const vpMeSite& P){
  return (P.getState() == vpMeSite::NO_SUPPRESSION);
}

unsigned int
vpMeTracker::numberOfSignal()
{
  unsigned int number_signal=0;

  // Loop through all the points tracked from the contour
  number_signal = static_cast<unsigned int>(std::count_if(list.begin(), list.end(), isSuppressZero));
  return number_signal;
}

unsigned int
vpMeTracker::totalNumberOfSignal()
{
  return list.size();

}

int
vpMeTracker::outOfImage(int i, int j, int half, int rows, int cols)
{
  return (! ((i> half+2) &&
    (i< rows -(half+2)) &&
    (j>half+2) &&
    (j<cols-(half+2)))
    ) ;
}

int
vpMeTracker::outOfImage(vpImagePoint iP, int half, int rows, int cols)
{
  int i = vpMath::round(iP.get_i());
  int j = vpMath::round(iP.get_j());
  return (! ((i> half+2) &&
    (i< rows -(half+2)) &&
    (j>half+2) &&
    (j<cols-(half+2)))
    ) ;
}


void
vpMeTracker::initTracking(const vpImage<unsigned char>& I)
{
  // Must set range to 0
  unsigned int range_tmp = me->getRange();
  me->setRange(init_range);

  nGoodElement=0;

  int d = 0;
  vpImagePoint ip1, ip2;

  // Loop through list of sites to track
  for(std::list<vpMeSite>::iterator it=list.begin(); it!=list.end(); ++it){
    vpMeSite refp = *it;//current reference pixel

    d++ ;
    // If element hasn't been suppressed
    if(refp.getState() == vpMeSite::NO_SUPPRESSION)
    {
      try {
        refp.track(I,me,false);
      }
      catch(...)
      {
        // EM verifier quel signal est de sortie !!!
        vpERROR_TRACE("Error caught") ;
        throw ;
      }
      if(refp.getState() == vpMeSite::NO_SUPPRESSION) nGoodElement++;
    }


#if (DEBUG_LEVEL2)
    {
      double a,b ;
      a = refp.i_1 - refp.i ;
      b = refp.j_1 - refp.j ;
      if(refp.getState() == vpMeSite::NO_SUPPRESSION) {
        ip1.set_i( refp.i );
        ip1.set_j( refp.j );
        ip2.set_i( refp.i+a );
        ip2.set_j( refp.j+b );
        vpDisplay::displayArrow(I, ip1, ip2, vpColor::green) ;
      }
    }
#endif
    *it = refp;
  }

  /*
  if (res != OK)
  {
  std::cout<< "In vpMeTracker::initTracking(): " ;
  switch (res)
  {
  case  ERR_TRACKING:
  std::cout << "vpMeTracker::initTracking:Track return ERR_TRACKING " << std::endl ;
  break ;
  case fatalError:
  std::cout << "vpMeTracker::initTracking:Track return fatalError" << std::endl ;
  break ;
  default:
  std::cout << "vpMeTracker::initTracking:Track return error " << res << std::endl ;
  }
  return res ;
  }
  */

  me->setRange(range_tmp);
}


void
vpMeTracker::track(const vpImage<unsigned char>& I)
{
  if (list.empty())
  {
    vpDERROR_TRACE(2, "Tracking error: too few pixel to track");
    throw(vpTrackingException(vpTrackingException::notEnoughPointError,
      "too few pixel to track")) ;

  }

  vpImagePoint ip1, ip2;
  nGoodElement=0;
  //  int d =0;
  // Loop through list of sites to track
  for(std::list<vpMeSite>::iterator it=list.begin(); it!=list.end(); ++it){
    vpMeSite s = *it;//current reference pixel

    //    d++ ;
    // If element hasn't been suppressed
    if(s.getState() == vpMeSite::NO_SUPPRESSION)
    {

      try{
        //  vpERROR_TRACE("%d",d ) ;
        //  vpERROR_TRACE("range %d",me->range) ;
        s.track(I,me,true);
      }
      catch(vpTrackingException)
      {
        vpERROR_TRACE("catch exception ") ;
        s.setState(vpMeSite::THRESHOLD);
      }

      if(s.getState() != vpMeSite::THRESHOLD)
      {
        nGoodElement++;

#if (DEBUG_LEVEL2)
        {
          double a,b ;
          a = s.i_1 - s.i ;
          b = s.j_1 - s.j ;
          if(s.getState() == vpMeSite::NO_SUPPRESSION) {
            ip1.set_i( s.i );
            ip1.set_j( s.j );
            ip2.set_i( s.i+a*5 );
            ip2.set_j( s.j+b*5 );
            vpDisplay::displayArrow(I, ip1, ip2, vpColor::green) ;
          }
        }
#endif

      }
      *it = s;
    }
  }
}

void
vpMeTracker::display(const vpImage<unsigned char>& I)
{
#if (DEBUG_LEVEL1)
  {
    std::cout <<"begin vpMeTracker::displayList() " << std::endl ;
    std::cout<<" There are "<<list.size()<< " sites in the list " << std::endl ;
  }
#endif
  for(std::list<vpMeSite>::const_iterator it=list.begin(); it!=list.end(); ++it){
    vpMeSite p = *it;
    p.display(I);
  }
}

void
vpMeTracker::display(const vpImage<unsigned char>& I,vpColVector &w, unsigned int &index_w)
{
  for(std::list<vpMeSite>::iterator it=list.begin(); it!=list.end(); ++it){
    vpMeSite P = *it;

    if(P.getState() == vpMeSite::NO_SUPPRESSION)
    {
      P.weight = w[index_w];
      index_w++;
    }

    *it = P;
  }
  display(I);
}

#undef DEBUG_LEVEL1
#undef DEBUG_LEVEL2