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/*
* Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef otbSOMClassifier_h
#define otbSOMClassifier_h
#include "itkProcessObject.h"
#include "itkMembershipSample.h"
namespace otb
{
/** \class SOMClassifier
* \brief This class implements a SOM-Based classifier.
*
* The classifier iterates on the input list sample, feeding
* the output membership sample with the one-dimensionnal index
* of the winner neuron.
*
* Since this classifier differs from the base framework of itk in that it
* does not use DecisionRule and Memberships function, it derives from itk::ProcessObject
* instead of itk::SampleClassifierBase.
*
* \sa SOM, SOMMap, SOMActivationBuilder.
*
* \ingroup OTBSOM
*/
template <class TSample, class TSOMMap, class TLabel>
class ITK_EXPORT SOMClassifier : public itk::ProcessObject
{
public:
/** Standard class typedef*/
typedef SOMClassifier Self;
typedef itk::ProcessObject Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Standard macros */
itkTypeMacro(SOMClassifier, itk::ProcessObject);
itkNewMacro(Self);
/** typedefs from TSample object */
typedef TSample SampleType;
typedef typename SampleType::Pointer SamplePointerType;
typedef typename SampleType::MeasurementType MeasurementType;
typedef typename SampleType::MeasurementVectorType MeasurementVectorType;
typedef typename SampleType::MeasurementVectorType::ValueType InputPixelType;
/** SOM Map typedefs */
typedef TSOMMap SOMMapType;
typedef typename SOMMapType::Pointer SOMMapPointerType;
/** Output typedefs */
typedef itk::Statistics::MembershipSample<SampleType> OutputType;
typedef typename OutputType::Pointer OutputPointerType;
/** Label type typedef */
typedef TLabel ClassLabelType;
/// Accessors
void SetMap(SOMMapType* sommap);
SOMMapType* GetMap(void);
itkSetObjectMacro(Sample, SampleType);
itkGetObjectMacro(Sample, SampleType);
OutputType* GetOutput();
protected:
/** Constructor */
SOMClassifier();
/** Destructor */
~SOMClassifier() override
{
}
/** PrintSelf method */
void PrintSelf(std::ostream& os, itk::Indent indent) const override;
/** Starts the classification process */
void GenerateData() override;
private:
/// The input sample
SamplePointerType m_Sample;
}; // end of class
} // end of namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbSOMClassifier.hxx"
#endif
#endif
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