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/*
* Copyright (C) 2005-2017 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 otbSOMImageClassificationFilter_h
#define otbSOMImageClassificationFilter_h
#include "otbSOMClassifier.h"
#include "itkInPlaceImageFilter.h"
#include "itkListSample.h"
namespace otb
{
/** \class SOMImageClassificationFilter
* \brief This filter performs the classification of a VectorImage using a given SOM map.
*
* This filter is streamed and threaded, allowing to classify huge images. Because the
* internal sample type has to be an itk::FixedArray, one must specify at compilation time
* the maximum sample dimension. It is up to the user to specify a MaxSampleDimension sufficiently
* high to integrate all its features. This filter internally use one SVMClassifier per thread.
*
* \sa SVMClassifier
* \ingroup Streamed
* \ingroup Threaded
*
* \ingroup OTBSOM
*/
template <class TInputImage, class TOutputImage, class TSOMMap, class TMaskImage = TOutputImage>
class ITK_EXPORT SOMImageClassificationFilter
: public itk::InPlaceImageFilter<TInputImage, TOutputImage>
{
public:
/** Standard typedefs */
typedef SOMImageClassificationFilter Self;
typedef itk::InPlaceImageFilter<TInputImage, TOutputImage> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Type macro */
itkNewMacro(Self);
/** Creation through object factory macro */
itkTypeMacro(SOMImageClassificationFilter, InPlaceImageFilter);
typedef TInputImage InputImageType;
typedef typename InputImageType::ConstPointer InputImageConstPointerType;
typedef typename InputImageType::InternalPixelType ValueType;
typedef TMaskImage MaskImageType;
typedef typename MaskImageType::ConstPointer MaskImageConstPointerType;
typedef typename MaskImageType::Pointer MaskImagePointerType;
typedef TOutputImage OutputImageType;
typedef typename OutputImageType::Pointer OutputImagePointerType;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename OutputImageType::PixelType LabelType;
typedef TSOMMap SOMMapType;
typedef typename SOMMapType::Pointer SOMMapPointerType;
typedef typename SOMMapType::PixelType SampleType;
typedef itk::Statistics::ListSample<SampleType> ListSampleType;
typedef typename ListSampleType::Pointer ListSamplePointerType;
typedef otb::SOMClassifier<ListSampleType, SOMMapType, LabelType> ClassifierType;
typedef typename ClassifierType::Pointer ClassifierPointerType;
/** Set/Get the svm model */
itkSetObjectMacro(Map, SOMMapType);
itkGetObjectMacro(Map, SOMMapType);
/** Set/Get the default label */
itkSetMacro(DefaultLabel, LabelType);
itkGetMacro(DefaultLabel, LabelType);
/**
* If set, only pixels within the mask will be classified.
* \param mask The input mask.
*/
void SetInputMask(const MaskImageType * mask);
/**
* Get the input mask.
* \return The mask.
*/
const MaskImageType * GetInputMask(void);
protected:
/** Constructor */
SOMImageClassificationFilter();
/** Destructor */
~SOMImageClassificationFilter() override {}
/** Threaded generate data */
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, itk::ThreadIdType threadId) override;
/** Before threaded generate data */
void BeforeThreadedGenerateData() override;
/**PrintSelf method */
void PrintSelf(std::ostream& os, itk::Indent indent) const override;
private:
SOMImageClassificationFilter(const Self &); //purposely not implemented
void operator =(const Self&); //purposely not implemented
/** The SOM model used for classification */
SOMMapPointerType m_Map;
/** Default label for invalid pixels (when using a mask) */
LabelType m_DefaultLabel;
};
} // End namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbSOMImageClassificationFilter.txx"
#endif
#endif
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