/usr/include/OTB-6.4/otbWindowedSincInterpolateImageCosineFunction.h is in libotb-dev 6.4.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
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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 otbWindowedSincInterpolateImageCosineFunction_h
#define otbWindowedSincInterpolateImageCosineFunction_h
#include "otbWindowedSincInterpolateImageFunctionBase.h"
#include "vnl/vnl_math.h"
namespace otb
{
namespace Function
{
/**
* \class HammingWindowFunction
* \brief Window function for sinc interpolation.
* \f[ w(x) = 0.54 + 0.46 cos(\frac{\pi x}{m} ) \f]
* \sa WindowedSincInterpolateImageCosineFunction
*
* \ingroup OTBInterpolation
*/
template<class TInput = double, class TOutput = double>
class CosineWindowFunction
{
public:
void SetRadius(unsigned int radius)
{
m_Radius = radius;
m_Factor = CONST_PI / (2 * static_cast<double>(radius));
}
unsigned int GetRadius() const
{
return m_Radius;
}
double GetFactor()
{
return m_Factor;
}
inline TOutput operator ()(const TInput& A) const
{
double x = static_cast<double>(A);
double px = CONST_PI * x;
double temp = vcl_cos(x * m_Factor);
return (x == 0.0) ? static_cast<TOutput>(temp) : static_cast<TOutput>(temp * vcl_sin(px) / px);
}
private:
// Equal to \f$ \frac{\pi}{2 m} \f$
double m_Factor;
unsigned int m_Radius;
};
} //namespace Function
/**
* \class WindowedSincInterpolateImageCosineFunction
* \brief Use the WindowedSincInterpolateImageFunctionBase with a Cosine Function.
*
* \sa GenericInterpolatorImageFunction
* \sa Function::GaussianWindowFunction
* \sa Function::HammingWindowFunction
* \sa Function::CosineWindowFunction
* \sa Function::WelchWindowFunction
* \sa Function::LanczosWindowFunction
* \sa Function::BlackmanWindowFunction
* \ingroup ImageFunctionBases ImageInterpolators
*
* \ingroup OTBInterpolation
*/
template<class TInputImage, class TBoundaryCondition = itk::ConstantBoundaryCondition<TInputImage>, class TCoordRep =
double, class TInputInterpolator = double, class TOutputInterpolator = double>
class ITK_EXPORT WindowedSincInterpolateImageCosineFunction :
public WindowedSincInterpolateImageFunctionBase<TInputImage,
typename Function::CosineWindowFunction<TInputInterpolator,
TOutputInterpolator>,
TBoundaryCondition,
TCoordRep>
{
public:
/** Standard class typedefs. */
typedef WindowedSincInterpolateImageCosineFunction Self;
typedef WindowedSincInterpolateImageFunctionBase<TInputImage,
typename Function::CosineWindowFunction<TInputInterpolator,
TOutputInterpolator>,
TBoundaryCondition,
TCoordRep>
Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(WindowedSincInterpolateImageCosineFunction, WindowedSincInterpolateImageFunctionBase);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Input and output images typedef definition. */
typedef typename Superclass::InputImageType InputImageType;
typedef typename Superclass::OutputType OutputType;
/** Dimension underlying input image. */
itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);
/** Superclass typedef inheritance. */
typedef typename Superclass::IndexType IndexType;
typedef typename Superclass::SizeType SizeType;
typedef typename Superclass::RealType RealType;
typedef typename Superclass::IteratorType IteratorType;
typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
protected:
WindowedSincInterpolateImageCosineFunction() {};
~WindowedSincInterpolateImageCosineFunction() ITK_OVERRIDE {}
void PrintSelf(std::ostream& os, itk::Indent indent) const ITK_OVERRIDE
{
Superclass::PrintSelf(os, indent);
}
private:
WindowedSincInterpolateImageCosineFunction(const Self &); //purposely not implemented
void operator =(const Self&); //purposely not implemented
};
} // end namespace otb
#endif
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