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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 otbMeanShiftSegmentationFilter_h
#define otbMeanShiftSegmentationFilter_h
#include "itkMacro.h"
#include "otbMacro.h"
#include "otbMeanShiftSmoothingImageFilter.h"
#include "otbLabelImageRegionMergingFilter.h"
#include "otbLabelImageRegionPruningFilter.h"
#include "itkRelabelComponentImageFilter.h"
#include "itkConnectedComponentFunctorImageFilter.h"
#include <string>
namespace otb
{
namespace Functor
{
template <class TInput>
class ITK_EXPORT ConnectedLabelFunctor
{
public:
typedef ConnectedLabelFunctor Self;
std::string GetNameOfClass()
{
return "ConnectedLabelFunctor";
}
inline bool operator()(TInput& p1, TInput& p2)
{
// return static_cast<bool> (0);
return static_cast<bool>(p1 == p2);
}
ConnectedLabelFunctor()
{
}
~ConnectedLabelFunctor()
{
}
private:
ConnectedLabelFunctor(const Self&) = delete;
void operator=(const Self&) = delete;
};
} // end of Functor namespace
/** \class MeanShiftSegmentationFilter
*
* Performs segmentation of an image by chaining a mean shift filter and region
* merging filter.
* This filter relies on MeanShift Labeled image created from clustered filtered output of meanshift filter.
* Mode search algorithm is not performed on tiles boundaries. Thus output depends on Thread numbers.
*
* \ingroup OTBMeanShift
*/
template <class TInputImage, class TOutputLabelImage, class TOutputClusteredImage = TInputImage, class TKernel = Meanshift::KernelUniform>
class ITK_EXPORT MeanShiftSegmentationFilter : public itk::ImageToImageFilter<TInputImage, TOutputLabelImage>
{
public:
/** Standard Self typedef */
typedef MeanShiftSegmentationFilter Self;
typedef itk::ImageToImageFilter<TInputImage, TOutputLabelImage> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Some convenient typedefs. */
typedef TInputImage InputSpectralImageType;
typedef TOutputLabelImage OutputLabelImageType;
typedef TOutputClusteredImage OutputClusteredImageType;
typedef TKernel KernelType;
typedef double RealType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(MeanShiftSegmentationFilter, ImageToImageFilter);
/** ImageDimension constants */
itkStaticConstMacro(ImageDimension, unsigned int, TInputImage::ImageDimension);
// Mean shift filter
typedef OutputClusteredImageType MeanShiftFilteredImageType;
typedef MeanShiftSmoothingImageFilter<InputSpectralImageType, MeanShiftFilteredImageType, KernelType> MeanShiftFilterType;
typedef typename MeanShiftFilterType::Pointer MeanShiftFilterPointerType;
// Region merging filter
typedef typename MeanShiftFilterType::OutputLabelImageType InputLabelImageType;
typedef typename MeanShiftFilterType::LabelType InputLabelPixelType;
typedef LabelImageRegionMergingFilter<InputLabelImageType, MeanShiftFilteredImageType, OutputLabelImageType, OutputClusteredImageType>
RegionMergingFilterType;
typedef typename RegionMergingFilterType::Pointer RegionMergingFilterPointerType;
typedef LabelImageRegionPruningFilter<OutputLabelImageType, OutputClusteredImageType, OutputLabelImageType, OutputClusteredImageType> RegionPruningFilterType;
typedef typename RegionPruningFilterType::Pointer RegionPruningFilterPointerType;
typedef Functor::ConnectedLabelFunctor<InputLabelPixelType> LabelFunctorType;
typedef itk::ConnectedComponentFunctorImageFilter<InputLabelImageType, InputLabelImageType, LabelFunctorType> RelabelComponentFilterType;
typedef typename RelabelComponentFilterType::Pointer RelabelComponentFilterPointerType;
/** Sets the spatial bandwidth (or radius in the case of a uniform kernel)
* of the neighborhood for each pixel
*/
otbSetObjectMemberMacro(MeanShiftFilter, SpatialBandwidth, RealType);
otbGetObjectMemberConstReferenceMacro(MeanShiftFilter, SpatialBandwidth, RealType);
/** Sets the spectral bandwidth (or radius for a uniform kernel) for pixels
* to be included in the same mode
*/
otbSetObjectMemberMacro(MeanShiftFilter, RangeBandwidth, RealType);
otbGetObjectMemberConstReferenceMacro(MeanShiftFilter, RangeBandwidth, RealType);
/** Set the maximum number of iterations */
otbSetObjectMemberMacro(MeanShiftFilter, MaxIterationNumber, unsigned int);
otbGetObjectMemberConstReferenceMacro(MeanShiftFilter, MaxIterationNumber, unsigned int);
/** Set the convergence threshold */
otbSetObjectMemberMacro(MeanShiftFilter, Threshold, RealType);
otbGetObjectMemberConstReferenceMacro(MeanShiftFilter, Threshold, RealType);
/** Sets the minimum region size. (after merging step clustered regions, which size is under this
* threshold will be fused with adjacent region with smallest spectral distance).
*/
otbSetObjectMemberMacro(RegionPruningFilter, MinRegionSize, RealType);
otbGetObjectMemberMacro(RegionPruningFilter, MinRegionSize, RealType);
/** Returns the const image of region labels */
const OutputLabelImageType* GetLabelOutput() const;
/** Returns the image of region labels */
OutputLabelImageType* GetLabelOutput();
/** Returns the const clustered output image, with one spectral value per region */
const OutputClusteredImageType* GetClusteredOutput() const;
/** Returns the clustered output image, with one spectral value per region */
OutputClusteredImageType* GetClusteredOutput();
protected:
MeanShiftSegmentationFilter();
~MeanShiftSegmentationFilter() override;
// virtual void GenerateOutputInformation(void);
void GenerateData() override;
private:
MeanShiftFilterPointerType m_MeanShiftFilter;
RegionMergingFilterPointerType m_RegionMergingFilter;
RegionPruningFilterPointerType m_RegionPruningFilter;
RelabelComponentFilterPointerType m_RelabelFilter;
};
} // end namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbMeanShiftSegmentationFilter.hxx"
#endif
#endif
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