g2dsmooth.h

Go to the documentation of this file.

/* This software and supporting documentation are distributed by
 *     Institut Federatif de Recherche 49
 *     CEA/NeuroSpin, Batiment 145,
 *     91191 Gif-sur-Yvette cedex
 *     France
 *
 * This software is governed by the CeCILL-B license under
 * French law and abiding by the rules of distribution of free software.
 * You can  use, modify and/or redistribute the software under the
 * terms of the CeCILL-B license as circulated by CEA, CNRS
 * and INRIA at the following URL "http://www.cecill.info".
 *
 * As a counterpart to the access to the source code and  rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
 * liability.
 *
 * In this respect, the user's attention is drawn to the risks associated
 * with loading,  using,  modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean  that it is complicated to manipulate,  and  that  also
 * therefore means  that it is reserved for developers  and  experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systems and/or
 * data to be ensured and,  more generally, to use and operate it in the
 * same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL-B license and that you accept its terms.
 */
 
 
#ifndef AIMS_SIGNALFILTER_G2DSMOOTH_H
#define AIMS_SIGNALFILTER_G2DSMOOTH_H
 
#include <aims/utility/converter_volume.h>
#include <aims/signalfilter/glines.h>
#include <aims/signalfilter/gcolumns.h>
 
 
template< class T >
class Gaussian2DSmoothing
{
public:
 
  Gaussian2DSmoothing( float sx=1.0f, float sy=1.0f );
  virtual ~Gaussian2DSmoothing() { }
 
  carto::VolumeRef< T >  doit( const carto::rc_ptr<carto::Volume<T> > & );
 
private:
 
  float sigx;
  float sigy;
};
 
 
template< class T > inline 
Gaussian2DSmoothing< T >::Gaussian2DSmoothing( float sx, float sy )
  : sigx( sx ), sigy( sy )
{
  ASSERT( sigx >= 0.1f && sigx <= 100.0f );
  ASSERT( sigy >= 0.1f && sigy <= 100.0f );
}
 
 
template< class T > inline
carto::VolumeRef< T > Gaussian2DSmoothing< T >::doit(
  const carto::rc_ptr<carto::Volume< T > > & data )
{
  float sx = sigx / data->getVoxelSize()[0];
  float sy = sigy / data->getVoxelSize()[0];
 
  carto::Converter< carto::VolumeRef<T>, carto::VolumeRef<float> >
    conv;
  carto::VolumeRef< float > dataF( data->getSize() );
  dataF.setVoxelSize(data->getVoxelSize());
  conv.convert( data, dataF );
 
  GaussianLines glin;
  glin.doit( dataF, GCoef( sx ) );
 
  GaussianColumns gcol;
  gcol.doit( dataF, GCoef( sy ) );
 
  carto::Converter< carto::VolumeRef<float>, carto::VolumeRef<T> > conv2;
  carto::VolumeRef<T>   data3( data->getSize() );
  conv2.convert( dataF, data3 );
  return data3;
}
 
#endif