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/*
//
// Copyright 2009-2012 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: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#ifndef __cmtkImageOperationGaussFilter_h_included_
#define __cmtkImageOperationGaussFilter_h_included_
#include <cmtkconfig.h>
#include <Base/cmtkImageOperation.h>
#include <Base/cmtkUniformVolumeGaussianFilter.h>
namespace
cmtk
{
/** \addtogroup Base */
//@{
/// Image operation: Gaussian smoothing filter.
class ImageOperationGaussFilter
/// Inherit from image operation base class.
: public ImageOperation
{
public:
/// Constructor:
ImageOperationGaussFilter( const Units::GaussianSigma& sigma ) : m_Sigma( sigma ) {}
/// Apply this operation to an image in place.
virtual cmtk::UniformVolume::SmartPtr Apply( cmtk::UniformVolume::SmartPtr& volume )
{
volume->SetData( UniformVolumeGaussianFilter( volume ).GetFiltered3D( this->m_Sigma, 0.001 /* kernel truncation approximation error threshold */ ) );
return volume;
}
/// Create a new filter based on sigma parameter.
static void NewSigma( const double sigma )
{
ImageOperation::m_ImageOperationList.push_back( SmartPtr( new ImageOperationGaussFilter( Units::GaussianSigma( sigma ) ) ) );
}
/// Create a new filter based on full-width-at-half-maximum parameter.
static void NewFWHM( const double fwhm )
{
ImageOperation::m_ImageOperationList.push_back( SmartPtr( new ImageOperationGaussFilter( Units::GaussianFWHM( fwhm ) ) ) );
}
private:
/// Kernel with specified by coefficient sigma.
Units::GaussianSigma m_Sigma;
};
//@}
} // namespace cmtk
#endif // #ifndef __cmtkImageOperationGaussFilter_h_included_
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