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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkRBFLayer.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkRBFLayer_h
#define __itkRBFLayer_h
#include "itkCompletelyConnectedWeightSet.h"
#include "itkLayerBase.h"
#include "itkObject.h"
#include "itkMacro.h"
#include "itkRadialBasisFunctionBase.h"
#ifdef ITK_USE_REVIEW_STATISTICS
#include "itkEuclideanDistanceMetric.h"
#else
#include "itkEuclideanDistance.h"
#endif
namespace itk
{
namespace Statistics
{
template<class TMeasurementVector, class TTargetVector>
class RBFLayer : public LayerBase<TMeasurementVector, TTargetVector>
{
public:
typedef RBFLayer Self;
typedef LayerBase<TMeasurementVector, TTargetVector> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkTypeMacro(RBFLayer, LayerBase);
itkNewMacro(Self);
typedef typename Superclass::ValueType ValueType;
typedef typename Superclass::ValuePointer ValuePointer;
typedef vnl_vector<ValueType> NodeVectorType;
typedef typename Superclass::InternalVectorType InternalVectorType;
typedef typename Superclass::OutputVectorType OutputVectorType;
typedef typename Superclass::LayerInterfaceType LayerInterfaceType;
typedef CompletelyConnectedWeightSet<TMeasurementVector,TTargetVector>
WeightSetType;
typedef typename Superclass::WeightSetInterfaceType WeightSetInterfaceType;
typedef typename Superclass::InputFunctionInterfaceType InputFunctionInterfaceType;
typedef typename Superclass::TransferFunctionInterfaceType TransferFunctionInterfaceType;
//Distance Metric
#ifdef ITK_USE_REVIEW_STATISTICS
typedef EuclideanDistanceMetric<InternalVectorType> DistanceMetricType;
#else
typedef EuclideanDistance<InternalVectorType> DistanceMetricType;
#endif
typedef typename DistanceMetricType::Pointer DistanceMetricPointer;
typedef RadialBasisFunctionBase<ValueType> RBFType;
//Member Functions
itkGetConstReferenceMacro(RBF_Dim, unsigned int);
void SetRBF_Dim(unsigned int size);
virtual void SetNumberOfNodes(unsigned int numNodes);
virtual ValueType GetInputValue(unsigned int i) const;
void SetInputValue(unsigned int i, ValueType value);
virtual ValueType GetOutputValue(unsigned int) const;
virtual void SetOutputValue(unsigned int, ValueType);
virtual ValueType * GetOutputVector();
void SetOutputVector(TMeasurementVector value);
virtual void ForwardPropagate();
virtual void ForwardPropagate(TMeasurementVector input);
virtual void BackwardPropagate();
virtual void BackwardPropagate(TTargetVector itkNotUsed(errors)){};
virtual void SetOutputErrorValues(TTargetVector);
virtual ValueType GetOutputErrorValue(unsigned int node_id) const;
virtual ValueType GetInputErrorValue(unsigned int node_id) const;
virtual ValueType * GetInputErrorVector();
virtual void SetInputErrorValue(ValueType, unsigned int node_id);
//TMeasurementVector GetCenter(int i);
InternalVectorType GetCenter(unsigned int i) const;
void SetCenter(TMeasurementVector c,unsigned int i);
ValueType GetRadii(unsigned int i) const;
void SetRadii(ValueType c,unsigned int i);
virtual ValueType Activation(ValueType);
virtual ValueType DActivation(ValueType);
/** Set/Get the bias */
itkSetMacro( Bias, ValueType );
itkGetConstReferenceMacro( Bias, ValueType );
void SetDistanceMetric(DistanceMetricType* f);
itkGetObjectMacro( DistanceMetric, DistanceMetricType );
itkGetConstObjectMacro( DistanceMetric, DistanceMetricType );
itkSetMacro(NumClasses,unsigned int);
itkGetConstReferenceMacro(NumClasses,unsigned int);
void SetRBF(RBFType* f);
itkGetObjectMacro(RBF, RBFType);
itkGetConstObjectMacro(RBF, RBFType);
protected:
RBFLayer();
virtual ~RBFLayer();
/** Method to print the object. */
virtual void PrintSelf( std::ostream& os, Indent indent ) const;
private:
NodeVectorType m_NodeInputValues;
NodeVectorType m_NodeOutputValues;
NodeVectorType m_InputErrorValues;
NodeVectorType m_OutputErrorValues;
typename DistanceMetricType::Pointer m_DistanceMetric;
std::vector<InternalVectorType> m_Centers; // ui....uc
InternalVectorType m_Radii;
unsigned int m_NumClasses;
ValueType m_Bias;
unsigned int m_RBF_Dim;
typename RBFType::Pointer m_RBF;
};
} // end namespace Statistics
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkRBFLayer.txx"
#endif
#endif
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