cmtkImageOperationGaussFilter.h

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/*
//
//  Copyright 2009-2010 SRI International
//
//  This file is part of the Computational Morphometry Toolkit.
//
//  http://www.nitrc.org/projects/cmtk/
//
//  The Computational Morphometry Toolkit is free software: you can
//  redistribute it and/or modify it under the terms of the GNU General Public
//  License as published by the Free Software Foundation, either version 3 of
//  the License, or (at your option) any later version.
//
//  The Computational Morphometry Toolkit 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 General Public License for more details.
//
//  You should have received a copy of the GNU General Public License along
//  with the Computational Morphometry Toolkit.  If not, see
//  <http://www.gnu.org/licenses/>.
//
//  $Revision: 2398 $
//
//  $LastChangedDate: 2010-10-05 14:54:37 -0700 (Tue, 05 Oct 2010) $
//
//  $LastChangedBy: torstenrohlfing $
//
*/

#ifndef __cmtkImageOperationGaussFilter_h_included_
#define __cmtkImageOperationGaussFilter_h_included_

#include <cmtkconfig.h>

#include <Base/cmtkImageOperation.h>
#include <Base/cmtkUniformVolumeFilter.h>

namespace
cmtk
{

class ImageOperationGaussFilter
  : public ImageOperation
{
public:
  ImageOperationGaussFilter( const Units::GaussianSigma& sigma ) : m_Sigma( sigma ) {}
  
  virtual cmtk::UniformVolume::SmartPtr  Apply( cmtk::UniformVolume::SmartPtr& volume )
  {
    volume->SetData( UniformVolumeFilter( volume ).GetDataGaussFiltered( this->m_Sigma, 0.001 /* kernel truncation approximation error threshold */ ) );
    return volume;
  }
  
  static void NewSigma( const double sigma )
  {
    ImageOperation::m_ImageOperationList.push_back( SmartPtr( new ImageOperationGaussFilter( Units::GaussianSigma( sigma ) ) ) );
  }
  
  static void NewFWHM( const double fwhm )
  {
    ImageOperation::m_ImageOperationList.push_back( SmartPtr( new ImageOperationGaussFilter( Units::GaussianFWHM( fwhm ) ) ) );
  }
  
private:
  Units::GaussianSigma m_Sigma;
};

} // namespace cmtk

#endif // #ifndef __cmtkImageOperationGaussFilter_h_included_