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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 otbJoinHistogramMIImageFilter_h
#define otbJoinHistogramMIImageFilter_h
#include "otbBinaryFunctorNeighborhoodJoinHistogramImageFilter.h"
#include "otbJoinHistogramMI.h"
namespace otb
{
/** \class JoinHistogramMIImageFilter
* \brief Implements neighborhood-wise the computation of mutual
* information using a join histogram.
*
* This filter is parametrized over the types of the two
* input images and the type of the output image.
*
* Numeric conversions (castings) are done by the C++ defaults.
*
* The filter will walk over all the pixels in the two input images, and for
* each one of them it will do the following:
*
* - cast the input 1 pixel value to \c double
* - cast the input 2 pixel value to \c double
* - compute the difference of the two pixel values
* - compute the value of the mutual information
* - cast the \c double value resulting to the pixel type of the output image
* - store the casted value into the output image.
*
* The filter expect all images to have the same dimension
* (e.g. all 2D, or all 3D, or all ND)
*
* \ingroup IntensityImageFilters Multithreaded
*
* \ingroup OTBChangeDetection
*/
template <class TInputImage1, class TInputImage2, class TOutputImage>
class ITK_EXPORT JoinHistogramMIImageFilter :
public BinaryFunctorNeighborhoodJoinHistogramImageFilter<
TInputImage1, TInputImage2, TOutputImage,
Functor::JoinHistogramMI<
typename itk::ConstNeighborhoodIterator<TInputImage1>,
typename itk::ConstNeighborhoodIterator<TInputImage2>,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef JoinHistogramMIImageFilter Self;
typedef BinaryFunctorNeighborhoodJoinHistogramImageFilter<
TInputImage1, TInputImage2, TOutputImage,
Functor::JoinHistogramMI<
typename itk::ConstNeighborhoodIterator<TInputImage1>,
typename itk::ConstNeighborhoodIterator<TInputImage2>,
typename TOutputImage::PixelType>
> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Macro defining the type*/
itkTypeMacro(JoinHistogramMIImageFilter, SuperClass);
protected:
JoinHistogramMIImageFilter() {}
~JoinHistogramMIImageFilter() override {}
private:
JoinHistogramMIImageFilter(const Self &); //purposely not implemented
void operator =(const Self&); //purposely not implemented
};
} // end namespace otb
#endif
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