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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt 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 otbMeanDifferenceImageFilter_h
#define otbMeanDifferenceImageFilter_h
#include "otbBinaryFunctorNeighborhoodImageFilter.h"
#include "otbMeanDifference.h"
namespace otb
{
/** \class MeanDifferenceImageFilter
* \brief Implements neighborhood-wise the computation of mean difference.
*
* 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 difference of means
* - 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 MeanDifferenceImageFilter :
public BinaryFunctorNeighborhoodImageFilter<
TInputImage1, TInputImage2, TOutputImage,
Functor::MeanDifference<
typename itk::ConstNeighborhoodIterator<TInputImage1>,
typename itk::ConstNeighborhoodIterator<TInputImage2>,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef MeanDifferenceImageFilter Self;
typedef BinaryFunctorNeighborhoodImageFilter<
TInputImage1, TInputImage2, TOutputImage,
Functor::MeanDifference<
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(MeanDifferenceImageFilter, SuperClass);
protected:
MeanDifferenceImageFilter() {}
~MeanDifferenceImageFilter() ITK_OVERRIDE {}
private:
MeanDifferenceImageFilter(const Self &); //purposely not implemented
void operator =(const Self&); //purposely not implemented
};
} // end namespace otb
#endif
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