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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 otbRealImageToComplexImageFilter_h
#define otbRealImageToComplexImageFilter_h
#include <vcl_deprecated_header.h>
#include "itkUnaryFunctorImageFilter.h"
#include "vnl/vnl_math.h"
namespace otb
{
/** \class RealImageToComplexImageFilter
* \brief Computes pixel-wise the complex image of a real image.
*
* \sa RealImageToComplexImageFilter
* \ingroup Multithreaded
*
* \ingroup OTBImageManipulation
*/
namespace Function {
template< class TInputImageRealPart, class TOutput>
class RealToComplex
{
public:
typedef typename TOutput::value_type OutputValueType;
RealToComplex() {}
~RealToComplex() {}
bool operator!=( const RealToComplex & ) const
{
return false;
}
bool operator==( const RealToComplex & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInputImageRealPart & real) const
{
return TOutput(static_cast<OutputValueType>(real), static_cast<OutputValueType>(0.0));
}
};
}
template <class TInputImageRealPart, class TOutputImage>
class ITK_EXPORT RealImageToComplexImageFilter :
public itk::UnaryFunctorImageFilter<TInputImageRealPart, TOutputImage,
Function::RealToComplex<
typename TInputImageRealPart::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef RealImageToComplexImageFilter Self;
typedef itk::UnaryFunctorImageFilter<
TInputImageRealPart, TOutputImage,
Function::RealToComplex< typename TInputImageRealPart::PixelType,
typename TOutputImage::PixelType> >
Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(RealImageToComplexImageFilter,
UnaryFunctorImageFilter);
typedef typename TInputImageRealPart::PixelType InputRealPartPixelType;
typedef typename TOutputImage::PixelType OutputPixelType;
typedef typename itk::NumericTraits< OutputPixelType >::ValueType OutputPixelValueType;
protected:
RealImageToComplexImageFilter() {}
~RealImageToComplexImageFilter() override {}
private:
RealImageToComplexImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace otb
#endif
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