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/*
//
// Copyright 1997-2009 Torsten Rohlfing
// Copyright 2004-2009 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 __cmtkActiveDeformationModel_h_included_
#define __cmtkActiveDeformationModel_h_included_
#include <cmtkconfig.h>
#include <Base/cmtkActiveShapeModel.h>
#include <Base/cmtkWarpXform.h>
#include <Base/cmtkSplineWarpXform.h>
#include <list>
namespace
cmtk
{
/** \addtogroup Base */
//@{
/// Active deformation model.
template<class W>
class ActiveDeformationModel :
/// This is an active shape model of sorts.
public ActiveShapeModel,
/// This class is also a deformation (as defined by template parameter).
public W
{
public:
/// Smart pointer to spline ADM.
typedef SmartPointer< ActiveDeformationModel<W> > SmartPtr;
/** Build deformation model from list of deformations.
* All deformations in the list must be of the same type, have the same
* arrangement of control points, and must be defined on the same
* domain (reference image).
*/
ActiveDeformationModel( const std::list< SmartPointer<W> >& deformationList, const unsigned int numberOfModes, const bool includeScaleInModel = true,
const bool includeReferenceInModel = true );
/// Compose deformation from mean deformation and modes of variation.
W* Compose( const Types::Coordinate* weights = NULL );
/** Decompose a deformation into mean and modes of this model.
*\param input Input deformation.
*\param weights Weights of the modes that make up the given input vector.
* This parameter is optional. If not given, no weights will be returned.
*\return The value of the multivariate Gaussian PDF represented by this
* model atr the location of the input vector.
*/
float Decompose( const W* input, Types::Coordinate *const weights = NULL ) const;
private:
/** Make ADM sample points from the undeformed c.p.g. of a given deformation.
* This is for inclusion of the reference individual into the model by
* putting the identity transformation into the sample set.
*/
Types::Coordinate* MakeSamplePointsReference( const W* deformation );
/** Make ADM sample points from a given deformation.
* This function applies the inverse affine transformation of the given
* deformation to all of its control points. This brings all deformations
* into the same reference system, which is a necessary condition for model
* building. Note that otherwise all control point positions are in the
* coordinate system of the respective floating image, which varies from
* deformation to deformation.
*/
Types::Coordinate* MakeSamplePoints( const W* deformation );
/// Flag whether to include scale factors in model.
bool IncludeScaleInModel;
/// Flag whether to include reference image in model.
bool IncludeReferenceInModel;
};
/// Spline warp active deformation model.
typedef ActiveDeformationModel<SplineWarpXform> SplineActiveDeformationModel;
//@}
} // namespace cmtk
#endif // #ifndef __cmtkActiveDeformationModel_h_included_
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