vpTemplateTracker.cpp

/****************************************************************************
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2017 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://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * 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:
 * Template tracker.
 *
 * Authors:
 * Amaury Dame
 * Aurelien Yol
 * Fabien Spindler
 *
 *****************************************************************************/

#include <visp3/tt/vpTemplateTracker.h>
#include <visp3/tt/vpTemplateTrackerBSpline.h>

vpTemplateTracker::vpTemplateTracker(vpTemplateTrackerWarp *_warp)
  : nbLvlPyr(1), l0Pyr(0), pyrInitialised(false), ptTemplate(NULL), ptTemplatePyr(NULL),
    ptTemplateInit(false), templateSize(0), templateSizePyr(NULL),
    ptTemplateSelect(NULL), ptTemplateSelectPyr(NULL), ptTemplateSelectInit(false),
    templateSelectSize(0), ptTemplateSupp(NULL), ptTemplateSuppPyr(NULL),
    ptTemplateCompo(NULL), ptTemplateCompoPyr(NULL), zoneTracked(NULL), zoneTrackedPyr(NULL),
    pyr_IDes(NULL), H(), Hdesire(), HdesirePyr(), HLM(), HLMdesire(), HLMdesirePyr(),
    HLMdesireInverse(), HLMdesireInversePyr(), G(), gain(1.), thresholdGradient(40),
    costFunctionVerification(false), blur(true), useBrent(false), nbIterBrent(3),
    taillef(7), fgG(NULL), fgdG(NULL), ratioPixelIn(0), mod_i(1), mod_j(1), nbParam(0),
    lambdaDep(0.001), iterationMax(30), iterationGlobale(0), diverge(false), nbIteration(0),
    useCompositionnal(true), useInverse(false), Warp(_warp), p(0), dp(), X1(), X2(),
    dW(), BI(), dIx(), dIy(), zoneRef_()
{
  nbParam = Warp->getNbParam() ;
  p.resize(nbParam);
  dp.resize(nbParam);

  fgG=new double[(taillef+1)/2] ;
  vpImageFilter::getGaussianKernel(fgG, taillef) ;

  fgdG=new double[(taillef+1)/2] ;
  vpImageFilter::getGaussianDerivativeKernel(fgdG, taillef) ;
}

void vpTemplateTracker::setGaussianFilterSize(unsigned int new_taill)
{
  taillef=new_taill;
  if (fgG) delete[] fgG;
  fgG=new double[taillef] ;
  vpImageFilter::getGaussianKernel(fgG, taillef) ;

  if (fgdG) delete[] fgdG;
  fgdG=new double[taillef] ;
  vpImageFilter::getGaussianDerivativeKernel(fgdG, taillef) ;
}

void vpTemplateTracker::initTracking(const vpImage<unsigned char>& I, vpTemplateTrackerZone &zone)
{
  //    std::cout<<"\tInitialise reference..."<<std::endl;
  zoneTracked=&zone;

  int largeur_im=(int)I.getWidth();
  int hauteur_im=(int)I.getHeight();

  unsigned int NbPointDsZone=0;
  //double xtotal=0,ytotal=0;
  int mod_fi,mod_fj;
  mod_fi=mod_i;mod_fj=mod_i;

  for(int i=0;i<hauteur_im;i+=mod_fi) {
    for(int j=0;j<largeur_im;j+=mod_fj) {
      if(zone.inZone(i,j))  {
        NbPointDsZone++;
        //xtotal+=j;
        //ytotal+=i;
      }
    }
  }

  //Warp->setCentre((double)xtotal/NbPointDsZone,(double)ytotal/NbPointDsZone);

  templateSize=NbPointDsZone;
  ptTemplate = new vpTemplateTrackerPoint[templateSize];ptTemplateInit=true;
  ptTemplateSelect = new bool[templateSize];ptTemplateSelectInit=true;

  Hdesire.resize(nbParam,nbParam);
  HLMdesire.resize(nbParam,nbParam);

  vpTemplateTrackerPoint pt;
  //vpTemplateTrackerZPoint ptZ;
  vpImage<double> GaussI ;
  vpImageFilter::filter(I, GaussI,fgG,taillef);
  vpImageFilter::getGradXGauss2D(I, dIx, fgG,fgdG,taillef);
  vpImageFilter::getGradYGauss2D(I, dIy, fgG,fgdG,taillef);

  unsigned int cpt_point=0;
  templateSelectSize=0;
  for(int i=0;i<hauteur_im;i+=mod_i)
  {
    //for(int  j=minx_t;j<maxx_t;j++)
    for(int j=0;j<largeur_im;j+=mod_j)
    {
//      if(i%mod_i ==0 && j%mod_j ==0)
        if(zone.inZone(i,j))
        {
          pt.x=j;
          pt.y=i;
          
          pt.dx=dIx[i][j];
          pt.dy=dIy[i][j];

          if(pt.dx*pt.dx+pt.dy*pt.dy>thresholdGradient)
          {
            ptTemplateSelect[cpt_point]=true;
            templateSelectSize++;
          }
          else
            ptTemplateSelect[cpt_point]=false;
          //ptTemplate_select[cpt_point]=true;

          /*if(blur)
          pt.val=GaussI[i][j];
        else
          pt.val=I[i][j];*/
          pt.val=vpTemplateTrackerBSpline::getSubPixBspline4(GaussI,i,j);
          //ptZone_pyr[NbLevelPyramid-cpt].push_back(pt);

          ptTemplate[cpt_point]=pt;
          cpt_point++;
        }
    }
  }

  //    std::cout<<"\tNb pt template apres scale:"<<cpt_point<<std::endl;
  //    std::cout<<"utilisation de "<<taille_template_select<<"/"<<cpt_point<<" = "<<100.*taille_template_select/cpt_point<<"% pour calcul derivees"<<std::endl;

  templateSize=cpt_point;
  GaussI.destroy();
  //    std::cout<<"\tEnd of reference initialisation ..."<<std::endl;
}

vpTemplateTracker::~vpTemplateTracker()
{
  //    vpTRACE("destruction tracker");
  delete[] fgG;
  delete[] fgdG;

  resetTracker();
}   

void vpTemplateTracker::resetTracker()
{
  // reset the tracker parameters
  p = 0;

  //    vpTRACE("resetTracking");
  if(pyrInitialised)
  {
    if(ptTemplatePyr){
        for(unsigned int i=0;i<nbLvlPyr;i++)
        {
          if(ptTemplatePyr[i]){
              for(unsigned int point=0;point<templateSizePyr[i];point++)
              {
                delete[] ptTemplatePyr[i][point].dW;
                delete[] ptTemplatePyr[i][point].HiG;
              }
              delete[] ptTemplatePyr[i];
          }
        }
        delete[] ptTemplatePyr;
        ptTemplatePyr = NULL;
    }

    if (ptTemplateCompoPyr) {
      for(unsigned int i=0;i<nbLvlPyr;i++)
      {
        if (ptTemplateCompoPyr[i]) {
          for(unsigned int point=0;point<templateSizePyr[i];point++) {
            delete[] ptTemplateCompoPyr[i][point].dW;
          }
          delete[] ptTemplateCompoPyr[i];
        }
      }
      delete[] ptTemplateCompoPyr;
      ptTemplateCompoPyr = NULL;
    }

    if (ptTemplateSuppPyr) {
      for(unsigned int i=0;i<nbLvlPyr;i++)
      {
        if (ptTemplateSuppPyr[i]) {
          for(unsigned int point=0;point<templateSizePyr[i];point++) {
            delete[] ptTemplateSuppPyr[i][point].Bt;
            delete[] ptTemplateSuppPyr[i][point].BtInit;
            delete[] ptTemplateSuppPyr[i][point].dBt;
            delete[] ptTemplateSuppPyr[i][point].d2W;
            delete[] ptTemplateSuppPyr[i][point].d2Wx;
            delete[] ptTemplateSuppPyr[i][point].d2Wy;
          }
          delete[] ptTemplateSuppPyr[i];
        }
      }
      delete[] ptTemplateSuppPyr;
      ptTemplateSuppPyr = NULL;
    }

    if(ptTemplateSelectPyr){
        for(unsigned int i=0;i<nbLvlPyr;i++){
            if(ptTemplateSelectPyr[i])
                delete[] ptTemplateSelectPyr[i];
        }
        delete[] ptTemplateSelectPyr;
        ptTemplateSelectPyr = NULL;
    }

    if(templateSizePyr){
        delete[] templateSizePyr;
        templateSizePyr = NULL;
    }

    if(HdesirePyr) {
        delete[] HdesirePyr;
        HdesirePyr = NULL;
    }

    if(HLMdesirePyr){
        delete[] HLMdesirePyr;
        HLMdesirePyr = NULL;
    }

    if(HLMdesireInversePyr){
        delete[] HLMdesireInversePyr;
        HLMdesireInversePyr = NULL;
    }

    if(zoneTrackedPyr){
        delete[] zoneTrackedPyr;
        zoneTrackedPyr = NULL;
    }

    if(pyr_IDes){
        delete[] pyr_IDes;
        pyr_IDes = NULL;
    }
  }
  else
  {
    if(ptTemplateInit)
    {
      for(unsigned int point=0;point<templateSize;point++)
      {
        delete[] ptTemplate[point].dW;
        delete[] ptTemplate[point].HiG;
      }
      delete[] ptTemplate;
      ptTemplate = NULL;
      ptTemplateInit = false;
    }
    if (ptTemplateCompo) {
      for(unsigned int point=0;point<templateSize;point++)
      {
        delete[] ptTemplateCompo[point].dW;
      }
      delete[] ptTemplateCompo;
      ptTemplateCompo = NULL;
    }
    if (ptTemplateSupp) {
      for(unsigned int point=0;point<templateSize;point++)
      {
        delete[] ptTemplateSupp[point].Bt;
        delete[] ptTemplateSupp[point].BtInit;
        delete[] ptTemplateSupp[point].dBt;
        delete[] ptTemplateSupp[point].d2W;
        delete[] ptTemplateSupp[point].d2Wx;
        delete[] ptTemplateSupp[point].d2Wy;
      }
      delete[] ptTemplateSupp;
      ptTemplateSupp = NULL;
    }
    if(ptTemplateSelectInit) {
      if (ptTemplateSelect) {
        delete[] ptTemplateSelect; ptTemplateSelect = NULL;
      }
    }
  }
}   

void vpTemplateTracker::display(const vpImage<unsigned char> &I, const vpColor& col, const unsigned int thickness)
{
  if (I.display) { // Only if a display is associated to the image
    vpTemplateTrackerZone zoneWarped;
    Warp->warpZone(*zoneTracked, p, zoneWarped);
    zoneWarped.display(I, col, thickness);
  }
}

void vpTemplateTracker::display(const vpImage<vpRGBa> &I, const vpColor& col, const unsigned int thickness)
{
  if (I.display) { // Only if a display is associated to the image
    vpTemplateTrackerZone zoneWarped;
    Warp->warpZone(*zoneTracked, p, zoneWarped);
    zoneWarped.display(I, col, thickness);
  }
}

void vpTemplateTracker::computeOptimalBrentGain(const vpImage<unsigned char> &I,vpColVector &tp,double tMI,vpColVector &direction,double &alpha)
{
  vpColVector **ptp;
  ptp=new vpColVector*[4];
  vpColVector p0(nbParam);
  p0=tp;

  //valeur necessaire si conditionnel
  vpColVector dpt(Warp->getNbParam());
  vpColVector adpt(Warp->getNbParam());

  vpColVector p1(nbParam);
  if(useCompositionnal)
  {
    if(useInverse)
      Warp->getParamInverse(direction,dpt);
    else
      dpt=direction;
    Warp->pRondp(tp,dpt,p1);
  }
  else
  {
    p1=tp+direction;
  }

  vpColVector p2(nbParam);
  if(useCompositionnal)
  {
    adpt=alpha*direction;
    if(useInverse)
      Warp->getParamInverse(adpt,dpt);
    else
      dpt=adpt;
    Warp->pRondp(tp,dpt,p2);
  }
  else
  {
    p2=tp+alpha*direction;
  }
  vpColVector p3(nbParam);
  ptp[0]=&p0;
  ptp[1]=&p1;
  ptp[2]=&p2;
  ptp[3]=&p3;


  double *Cost=new double[4];
  //Cost[0]=getCost(I,p0);
  Cost[0]=tMI;
  Cost[1]=getCost(I,p1);
  Cost[2]=getCost(I,p2);


  double *talpha=new double[4];
  talpha[0]=0;
  talpha[1]=1.;
  talpha[2]=alpha;

  //for(int i=0;i<3;i++)
  //    std::cout<<"alpha["<<i<<"] = "<<talpha[i]<<"   Cost["<<i<<"] = "<<Cost[i]<<std::endl;

  //Utilise trois estimï¿œes de paraboles succesive ...
  //A changer pour rendre adaptable
  for(unsigned int opt=0;opt<nbIterBrent;opt++)
  {
    //double a=talpha[0];
    //double b=talpha[1];
    //double c=talpha[2];
    //double Cost0=Cost[0];
    //double Cost1=Cost[1];
    //double Cost2=Cost[2];

    vpMatrix A(3,3);
    for(unsigned int i=0;i<3;i++){A[i][0]=talpha[i]*talpha[i];A[i][1]=talpha[i];A[i][2]=1.;}
    //std::cout<<"A="<<A<<std::endl;
    vpColVector B(3);for(unsigned int i=0;i<3;i++)B[i]=Cost[i];
    vpColVector parabol(3);parabol=(A.t()*A).inverseByLU()*A.t()*B;
    //vpColVector parabol(3);parabol=A.pseudoInverse()*B;

    //si convexe
    if(parabol[0]>0)
    {
      talpha[3]=-0.5*parabol[1]/parabol[0];
      //std::cout<<"parabol = "<<parabol<<std::endl;
      //std::cout<<"convexe talpha = "<<talpha[3]<<std::endl;
    }
    else//si concave
    {
      int tindic_x_min=0;
      int tindic_x_max=0;
      for(int i=1;i<3;i++)
      {
        if(talpha[i]<talpha[tindic_x_min])
          tindic_x_min=i;
        if(talpha[i]>talpha[tindic_x_max])
          tindic_x_max=i;
      }

      if(Cost[tindic_x_max]<Cost[tindic_x_min])
      {
        //talpha[3]=talpha[tindic_x_max]+1.;
        talpha[3]=talpha[tindic_x_max]+1.;
        /*if(talpha[tindic_x_min]>talpha[tindic_x_max])
          talpha[3]=talpha[tindic_x_min]+1.;
        else
          talpha[3]=talpha[tindic_x_min]-1.;*/
      }
      else
      {
        //talpha[3]=talpha[tindic_x_min]-1.;
        talpha[3]=talpha[tindic_x_min]-1.;
        /*if(talpha[tindic_x_min]<talpha[tindic_x_max])
          talpha[3]=talpha[tindic_x_max]+1.;
        else
          talpha[3]=talpha[tindic_x_max]-1.;*/
      }
      //std::cout<<"concave talpha="<<talpha[3]<<std::endl;
    }
    //std::cout<<"talpha="<<talpha[3]<<std::endl;
    int indic_x_min=0;
    int indic_x_max=0;
    for(int i=1;i<3;i++)
    {
      if(talpha[i]<talpha[indic_x_min])
        indic_x_min=i;
      if(talpha[i]>talpha[indic_x_max])
        indic_x_max=i;
    }
    //std::cout<<"talpha = "<<talpha[3]<<std::endl;
    if(talpha[3]>talpha[indic_x_max])
      if((talpha[3]-talpha[indic_x_max])>alpha)talpha[3]=talpha[indic_x_max]+4.;
    if(talpha[3]<talpha[indic_x_min])
      if((talpha[indic_x_min]-talpha[3])>alpha)talpha[3]=talpha[indic_x_min]-4.;

    /*if(((b-a)*(Cost1-Cost2)-(b-c)*(Cost1-Cost0))==0)
    {Cost[3]=1000;break;}

    //calcul du gain correspondant au minimum de la parabole estimï¿œe
    talpha[3]=b-0.5*((b-a)*(b-a)*(Cost1-Cost2)-(b-c)*(b-c)*(Cost1-Cost0))/((b-a)*(Cost1-Cost2)-(b-c)*(Cost1-Cost0));
    int indic_x_min=0;
    int indic_x_max=0;
    for(int i=1;i<3;i++)
    {
      if(talpha[i]<talpha[indic_x_min])
        indic_x_min=i;
      if(talpha[i]>talpha[indic_x_max])
        indic_x_max=i;
    }
    std::cout<<"talpha = "<<talpha[3]<<std::endl;
    if(talpha[3]>talpha[indic_x_max])
      if((talpha[3]-talpha[indic_x_max])>alpha)talpha[3]=talpha[indic_x_max]+alpha;
    if(talpha[3]<talpha[indic_x_min])
      if((talpha[indic_x_min]-talpha[3])>alpha)talpha[3]=talpha[indic_x_min]-alpha;*/

    //p3=tp-talpha[3]*direction;
    if(useCompositionnal)
    {
      adpt=talpha[3]*direction;
      if(useInverse)
        Warp->getParamInverse(adpt,dpt);
      else
        dpt=adpt;
      Warp->pRondp(tp,dpt,p3);
    }
    else
    {
      p3=tp+talpha[3]*direction;
    }

    Cost[3]=getCost(I,p3);
    //std::cout<<"new cost="<<Cost[3]<<std::endl;

    int indice_f_max=0;
    for(int i=1;i<4;i++)
      if(Cost[i]>Cost[indice_f_max])
        indice_f_max=i;
    if(indice_f_max!=3)
    {
      *ptp[indice_f_max]=*ptp[3];
      Cost[indice_f_max]=Cost[3];
      talpha[indice_f_max]=talpha[3];
    }
    else
      break;
  }

  int indice_f_min=0;
  for(int i=0;i<4;i++)
    if(Cost[i]<Cost[indice_f_min])
      indice_f_min=i;

  alpha=talpha[indice_f_min];

  if(alpha<1)alpha=1.;

  delete[] ptp;
  delete[] Cost;
  delete[] talpha;
}


void vpTemplateTracker::initPyramidal(unsigned int nbLvl, unsigned int l0)
{
  //    vpTRACE("init_pyramidal");
  nbLvlPyr=nbLvl;
  l0Pyr=l0;

  zoneTrackedPyr=new vpTemplateTrackerZone[nbLvlPyr];
  pyr_IDes=new vpImage<unsigned char>[nbLvlPyr];
  ptTemplatePyr=new vpTemplateTrackerPoint*[nbLvlPyr];
  ptTemplateSelectPyr=new bool*[nbLvlPyr];
  ptTemplateSuppPyr=new vpTemplateTrackerPointSuppMIInv*[nbLvlPyr];
  ptTemplateCompoPyr=new vpTemplateTrackerPointCompo*[nbLvlPyr];
  for(unsigned int i=0; i< nbLvlPyr; i++) {
    ptTemplatePyr[i]       = NULL;
    ptTemplateSuppPyr[i]   = NULL;
    ptTemplateSelectPyr[i] = NULL;
    ptTemplateCompoPyr[i]  = NULL;
  }
  templateSizePyr=new unsigned int[nbLvlPyr];
  HdesirePyr=new vpMatrix[nbLvlPyr];
  HLMdesirePyr=new vpMatrix[nbLvlPyr];
  HLMdesireInversePyr=new vpMatrix[nbLvlPyr];

  pyrInitialised=true;
  //    vpTRACE("fin init_pyramidal");

}
void vpTemplateTracker::initTrackingPyr(const vpImage<unsigned char>& I,vpTemplateTrackerZone &zone)
{
  //    vpTRACE("initTrackingPyr");
  zoneTrackedPyr[0].copy(zone);
  //vpTRACE("fin copy zone");

  pyr_IDes[0]=I;
  initTracking(pyr_IDes[0],zoneTrackedPyr[0]);
  ptTemplatePyr[0]=ptTemplate;
  ptTemplateSelectPyr[0]=ptTemplateSelect;
  templateSizePyr[0]=templateSize;

  //creationpyramide de zones et images desiree
  if(nbLvlPyr>1)
  {
    for(unsigned int i=1;i<nbLvlPyr;i++)
    {
      zoneTrackedPyr[i]=zoneTrackedPyr[i-1].getPyramidDown();
      vpImageFilter::getGaussPyramidal(pyr_IDes[i-1],pyr_IDes[i]);

      initTracking(pyr_IDes[i],zoneTrackedPyr[i]);
      ptTemplatePyr[i]=ptTemplate;
      ptTemplateSelectPyr[i]=ptTemplateSelect;
      templateSizePyr[i]=templateSize;
      //reste probleme avec le Hessien
    }
  }
  /*for(int i=0;i<nbLvlPyr;i++)
  {
    vpColVector ptemp(8);ptemp=0;
    zoneTracked=&zoneTrackedPyr[i];
    init_pos_evalRMS(ptemp);
  }*/
  zoneTracked=&zoneTrackedPyr[0];

  //    vpTRACE("fin initTrackingPyr");

}

void vpTemplateTracker::initClick(const vpImage<unsigned char> &I, bool delaunay)
{
  zoneRef_.initClick(I, delaunay);

  if (nbLvlPyr > 1) {
    initPyramidal(nbLvlPyr, l0Pyr);
    initTrackingPyr(I, zoneRef_);
    initHessienDesiredPyr(I);
  }
  else {
    initTracking(I, zoneRef_);
    initHessienDesired(I);
//    trackNoPyr(I);
  }
}

void vpTemplateTracker::initFromPoints(const vpImage<unsigned char> &I, const std::vector< vpImagePoint > &v_ip, bool delaunay)
{
  zoneRef_.initFromPoints(I, v_ip, delaunay);

  if (nbLvlPyr > 1) {
    initPyramidal(nbLvlPyr, l0Pyr);
    initTrackingPyr(I, zoneRef_);
    initHessienDesiredPyr(I);
  }
  else {
    initTracking(I, zoneRef_);
    initHessienDesired(I);
    //trackNoPyr(I);
  }
}

void vpTemplateTracker::initFromZone(const vpImage<unsigned char> &I, const vpTemplateTrackerZone& zone)
{
  zoneRef_ = zone;

  if (nbLvlPyr > 1) {
    initPyramidal(nbLvlPyr, l0Pyr);
    initTrackingPyr(I, zoneRef_);
    initHessienDesiredPyr(I);
  }
  else {
    initTracking(I, zoneRef_);
    initHessienDesired(I);
//    trackNoPyr(I);
  }
}

void vpTemplateTracker::initHessienDesiredPyr(const vpImage<unsigned char> &I)
{
  //    vpTRACE("initHessienDesiredPyr");

  templateSize=templateSizePyr[0];
  //ptTemplateSupp=ptTemplateSuppPyr[0];
  //ptTemplateCompo=ptTemplateCompoPyr[0];
  ptTemplate=ptTemplatePyr[0];
  ptTemplateSelect=ptTemplateSelectPyr[0];
//  ptTemplateSupp=new vpTemplateTrackerPointSuppMIInv[templateSize];
  try{
      initHessienDesired(I);
      ptTemplateSuppPyr[0]=ptTemplateSupp;
      ptTemplateCompoPyr[0]=ptTemplateCompo;
      HdesirePyr[0]=Hdesire;
      HLMdesirePyr[0]=HLMdesire;
      HLMdesireInversePyr[0]=HLMdesireInverse;
  }
  catch(vpException &e){
      ptTemplateSuppPyr[0]=ptTemplateSupp;
      ptTemplateCompoPyr[0]=ptTemplateCompo;
      HdesirePyr[0]=Hdesire;
      HLMdesirePyr[0]=HLMdesire;
      HLMdesireInversePyr[0]=HLMdesireInverse;
      throw(e);
  }

  if(nbLvlPyr>1)
  {
    vpImage<unsigned char> Itemp;Itemp=I;
    for(unsigned int i=1;i<nbLvlPyr;i++)
    {
      vpImageFilter::getGaussPyramidal(Itemp,Itemp);

      templateSize=templateSizePyr[i];
      ptTemplate=ptTemplatePyr[i];
      ptTemplateSelect=ptTemplateSelectPyr[i];
      //ptTemplateSupp=ptTemplateSuppPyr[i];
      //ptTemplateCompo=ptTemplateCompoPyr[i];
      try{
        initHessienDesired(Itemp);
        ptTemplateSuppPyr[i]=ptTemplateSupp;
        ptTemplateCompoPyr[i]=ptTemplateCompo;
        HdesirePyr[i]=Hdesire;
        HLMdesirePyr[i]=HLMdesire;
        HLMdesireInversePyr[i]=HLMdesireInverse;
      }
      catch(vpException &e){
          ptTemplateSuppPyr[i]=ptTemplateSupp;
          ptTemplateCompoPyr[i]=ptTemplateCompo;
          HdesirePyr[i]=Hdesire;
          HLMdesirePyr[i]=HLMdesire;
          HLMdesireInversePyr[i]=HLMdesireInverse;
          throw(e);
      }
    }
  }
  //    vpTRACE("fin initHessienDesiredPyr");
}

void vpTemplateTracker::track(const vpImage<unsigned char> &I)
{
  if (nbLvlPyr > 1)
    trackPyr(I);
  else
    trackNoPyr(I);
}

void vpTemplateTracker::trackPyr(const vpImage<unsigned char> &I)
{
  //vpTRACE("trackPyr");
  vpImage<unsigned char> *pyr_I;
//  pyr_I=new vpImage<unsigned char>[nbLvlPyr+1]; // Why +1 ?
  pyr_I=new vpImage<unsigned char>[nbLvlPyr]; // Why +1 ?
  pyr_I[0]=I;

  try
  {
      vpColVector ptemp(nbParam);
      if(nbLvlPyr>1)
      {
    //    vpColVector *p_sauv=new vpColVector[nbLvlPyr];
    //    for(unsigned int i=0;i<nbLvlPyr;i++)p_sauv[i].resize(nbParam);

    //    p_sauv[0]=p;
        for(unsigned int i=1;i<nbLvlPyr;i++)
        {
          vpImageFilter::getGaussPyramidal(pyr_I[i-1],pyr_I[i]);
          //test getParamPyramidDown
          /*vpColVector vX_test(2);vX_test[0]=15.;vX_test[1]=30.;
          vpColVector vX_test2(2);
          Warp->computeCoeff(p);
          Warp->computeDenom(vX_test,p);
          Warp->warpX(vX_test,vX_test2,p);
          std::cout<<"p = "<<p.t()<<std::endl;*/
          //std::cout<<"get p down"<<std::endl;
          Warp->getParamPyramidDown(p,ptemp);
          p=ptemp;
          zoneTracked=&zoneTrackedPyr[i];

    //      p_sauv[i]=p;
          /*std::cout<<"p_down = "<<p.t()<<std::endl;

          vpColVector vX_testd(2);vX_testd[0]=15./2.;vX_testd[1]=30./2.;
          vpColVector vX_testd2(2);
          Warp->computeCoeff(p);
          Warp->computeDenom(vX_testd,p);
          Warp->warpX(vX_testd,vX_testd2,p);
          std::cout<<2.*vX_testd2[0]<<","<<2.*vX_testd2[1]<<" <=> "<<vX_test2[0]<<","<<vX_test2[1]<<std::endl;*/

        }

        for(int i=(int)nbLvlPyr-1;i>=0;i--)
        {
          if(i>=(int)l0Pyr)
          {
            templateSize=templateSizePyr[i];
            ptTemplate=ptTemplatePyr[i];
            ptTemplateSelect=ptTemplateSelectPyr[i];
            ptTemplateSupp=ptTemplateSuppPyr[i];
            ptTemplateCompo=ptTemplateCompoPyr[i];
            H=HdesirePyr[i];
            HLM=HLMdesirePyr[i];
            HLMdesireInverse=HLMdesireInversePyr[i];
    //        zoneTracked=&zoneTrackedPyr[i];
            trackRobust(pyr_I[i]);
          }
          //std::cout<<"get p up"<<std::endl;
    //      ptemp=p_sauv[i-1];
          if (i > 0) {
            Warp->getParamPyramidUp(p,ptemp);
            p=ptemp;
            zoneTracked=&zoneTrackedPyr[i-1];
          }
        }
    #if 0
        if(l0Pyr==0)
        {
          templateSize=templateSizePyr[0];
          ptTemplate=ptTemplatePyr[0];
          ptTemplateSelect=ptTemplateSelectPyr[0];
          ptTemplateSupp=ptTemplateSuppPyr[0];
          ptTemplateCompo=ptTemplateCompoPyr[0];
          H=HdesirePyr[0];
          HLM=HLMdesirePyr[0];
          HLMdesireInverse=HLMdesireInversePyr[0];
          zoneTracked=&zoneTrackedPyr[0];
          trackRobust(pyr_I[0]);
        }

        if (l0Pyr > 0) {
    //      for (int l=(int)l0Pyr; l >=0; l--) {
    //        Warp->getParamPyramidUp(p,ptemp);
    //        p=ptemp;
    //      }
          zoneTracked=&zoneTrackedPyr[0];
        }
    #endif
        //    delete [] p_sauv;
      }
      else
      {
        //std::cout<<"reviens a tracker de base"<<std::endl;
        trackRobust(I);
      }
      delete[] pyr_I;
  }
  catch(vpException &e){
      delete[] pyr_I;
      throw(vpTrackingException(vpTrackingException::badValue, e.getMessage()));
  }
}

void vpTemplateTracker::trackRobust(const vpImage<unsigned char> &I)
{
  if(costFunctionVerification)
  {
    vpColVector p_pre_estimation;p_pre_estimation=p;
    getGaussianBluredImage(I);
    double pre_fcost=getCost(I,p);

    trackNoPyr(I);

    //std::cout<<"fct avant : "<<pre_fcost<<std::endl;
    double post_fcost=getCost(I,p);
    //std::cout<<"fct apres : "<<post_fcost<<std::endl<<std::endl;
    if(pre_fcost<post_fcost)
      p=p_pre_estimation;
  }
  else
    trackNoPyr(I);
}