vpFeatureBuilderEllipse.cpp

/****************************************************************************
 *
 * $Id: vpFeatureBuilderEllipse.cpp 4574 2014-01-09 08:48:51Z fspindle $
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2014 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:
 * Conversion between tracker and visual feature ellipse.
 *
 * Authors:
 * Eric Marchand
 *
 *****************************************************************************/


#include <visp/vpFeatureBuilder.h>


#include <visp/vpMath.h>



void vpFeatureBuilder::create(vpFeatureEllipse &s, const vpCircle &t )
{
  try
  {

    // 3D data
    double alpha = t.cP[0] ;
    double beta = t.cP[1] ;
    double gamma = t.cP[2] ;

    double X0 = t.cP[3] ;
    double Y0 = t.cP[4] ;
    double Z0 = t.cP[5] ;

    // equation p 318 prior eq (39)
    double d = alpha*X0 + beta*Y0 + gamma*Z0 ;

    double A = alpha / d ;
    double B = beta / d ;
    double C = gamma / d ;

    s.setABC(A,B,C) ;


    //2D data
    s.buildFrom( t.p[0],  t.p[1],  t.p[2],  t.p[3],  t.p[4] ) ;

  }
  catch(...)
  {
    vpERROR_TRACE("Error caught") ;
    throw ;
  }

}


void vpFeatureBuilder::create(vpFeatureEllipse &s,  const vpSphere &t)
{
  try
  {

    // 3D data
    double X0 = t.cP[0] ;
    double Y0 = t.cP[1] ;
    double Z0 = t.cP[2] ;
    double R = t.cP[3] ;

    double d = vpMath::sqr(X0) + vpMath::sqr(Y0) + vpMath::sqr(Z0) -
      vpMath::sqr(R) ;


    double A = X0 / d ;
    double B = Y0 / d ;
    double C = Z0 / d ;

    s.setABC(A,B,C) ;

    //2D data
    s.buildFrom( t.p[0],  t.p[1],  t.p[2],  t.p[3],  t.p[4] ) ;


  }
  catch(...)
  {
    vpERROR_TRACE("Error caught") ;
    throw ;
  }
}


void vpFeatureBuilder::create(vpFeatureEllipse &s,
                  const vpCameraParameters &cam,
                  const vpDot &t )
{
  try
  {

    unsigned int order = 3 ;
    vpMatrix mp(order,order) ; mp =0 ;
    vpMatrix m(order,order) ; m = 0 ;

    mp[0][0] = t.m00 ;
    mp[1][0] = t.m10;
    mp[0][1] = t.m01 ;
    mp[2][0] = t.m20 ;
    mp[1][1] = t.m11 ;
    mp[0][2] = t.m02 ;

    vpPixelMeterConversion::convertMoment(cam,order,mp,m) ;

    double  m00 = m[0][0] ;
    double  m01 = m[0][1] ;
    double  m10 = m[1][0] ;
    double  m02 = m[0][2] ;
    double  m11 = m[1][1] ;
    double  m20 = m[2][0] ;

    double xc = m10/m00 ; // sum j /S
    double yc = m01/m00 ; // sum i /S

    double mu20 = 4*(m20 - m00*vpMath::sqr(xc))/(m00) ;
    double mu02 = 4*(m02 - m00*vpMath::sqr(yc))/(m00) ;
    double mu11 = 4*(m11 - m00*xc*yc)/(m00) ;

    s.buildFrom(xc, yc,  mu20, mu11, mu02  ) ;
  }
  catch(...)
  {
    vpERROR_TRACE("Error caught") ;
    throw ;
  }

}



void vpFeatureBuilder::create(vpFeatureEllipse &s,
                  const vpCameraParameters &cam,
                  const vpDot2 &t )
{
  try
  {

    unsigned int order = 3 ;
    vpMatrix mp(order,order) ; mp =0 ;
    vpMatrix m(order,order) ; m = 0 ;

    mp[0][0] = t.m00 ;
    mp[1][0] = t.m10;
    mp[0][1] = t.m01 ;
    mp[2][0] = t.m20 ;
    mp[1][1] = t.m11 ;
    mp[0][2] = t.m02 ;

    vpPixelMeterConversion::convertMoment(cam,order,mp,m) ;

    double  m00 = m[0][0] ;
    double  m01 = m[0][1] ;
    double  m10 = m[1][0] ;
    double  m02 = m[0][2] ;
    double  m11 = m[1][1] ;
    double  m20 = m[2][0] ;

    double xc = m10/m00 ; // sum j /S
    double yc = m01/m00 ; // sum i /S

    double mu20 = 4*(m20 - m00*vpMath::sqr(xc))/(m00) ;
    double mu02 = 4*(m02 - m00*vpMath::sqr(yc))/(m00) ;
    double mu11 = 4*(m11 - m00*xc*yc)/(m00) ;

    s.buildFrom(xc, yc,  mu20, mu11, mu02  ) ;
  }
  catch(...)
  {
    vpERROR_TRACE("Error caught") ;
    throw ;
  }

}

void vpFeatureBuilder::create(vpFeatureEllipse &s,
                  const vpCameraParameters &cam,
                  const vpMeEllipse &t )
{
  try
  {

    unsigned int order = 3 ;
    vpMatrix mp(order,order) ; mp =0 ;
    vpMatrix m(order,order) ; m = 0 ;

    //The opposite of vpDot and vpDot2 because moments in vpMeEllipse 
    //are computed in the ij coordinate system whereas the moments in vpDot and vpDot2
    //are computed in the uv coordinate system
    mp[0][0] = t.get_m00() ;
    mp[1][0] = t.get_m01();
    mp[0][1] = t.get_m10() ;
    mp[2][0] = t.get_m02() ;
    mp[1][1] = t.get_m11() ;
    mp[0][2] = t.get_m20() ;

    vpPixelMeterConversion::convertMoment(cam,order,mp,m) ;

    double  m00 = m[0][0] ;
    double  m01 = m[0][1] ;
    double  m10 = m[1][0] ;
    double  m02 = m[0][2] ;
    double  m11 = m[1][1] ;
    double  m20 = m[2][0] ;

    double xc = m10/m00 ; // sum j /S
    double yc = m01/m00 ; // sum i /S

    double mu20 = 4*(m20 - m00*vpMath::sqr(xc))/(m00) ;
    double mu02 = 4*(m02 - m00*vpMath::sqr(yc))/(m00) ;
    double mu11 = 4*(m11 - m00*xc*yc)/(m00) ;

    s.buildFrom(xc, yc,  mu20, mu11, mu02  ) ;
  }
  catch(...)
  {
    vpERROR_TRACE("Error caught") ;
    throw ;
  }

}
/*
 * Local variables:
 * c-basic-offset: 2
 * End:
 */