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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 otbComplexMomentPathFunction_h
#define otbComplexMomentPathFunction_h
#include "otbGeometricMomentPathFunction.h"
#include "itkVectorContainer.h"
namespace otb
{
/**
* \class ComplexMomentPathFunction
* \brief Calculate the complex moment value over a path.
*
* The implemented equation is:
*
* \f[ c_{p, q}=\int\int_{D} (x+iy)^{p} \cdot (x-iy)^{q} \cdot
dx \cdot dy \f]
*
* With:
*
* - \f$ (x, y) \f$ pixel localization;
* - \f$ D \f$ the contour domain.
*
* This class is templated over :
* - the input image type
* - the path type
* - and the coordinate representation type (e.g. float or double).
*
* \ingroup ImageFunctions
*
* \ingroup OTBMoments
*/
template <class TInputPath, class TOutput = std::complex<double>, class TPrecision = double>
class ITK_EXPORT ComplexMomentPathFunction : public GeometricMomentPathFunction<TInputPath, TOutput, TPrecision>
{
public:
/** Standard class typedefs. */
typedef ComplexMomentPathFunction Self;
typedef GeometricMomentPathFunction<TInputPath, TOutput, TPrecision> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(ComplexMomentPathFunction, GeometricMomentPathFunction);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** InputPathType typedef support. */
typedef typename Superclass::PathType PathType;
typedef typename Superclass::PathConstPointer PathConstPointer;
typedef typename PathType::ContinuousIndexType VertexType;
typedef itk::VectorContainer<unsigned, VertexType> VertexListType;
typedef typename VertexListType::ConstPointer VertexListPointer;
/** Complex Type */
typedef typename Superclass::OutputType ComplexType;
typedef typename Superclass::OutputType OutputType;
typedef double RealType;
/** Type for calculation precision */
typedef typename Superclass::PrecisionType PrecisionType;
/** ComplexType for calculation precision */
typedef std::complex<PrecisionType> ComplexPrecisionType;
/** Evalulate the function */
OutputType Evaluate(const PathType& path) const override;
virtual OutputType Evaluate() const;
itkSetMacro(P, unsigned int);
itkGetConstReferenceMacro(P, unsigned int);
itkSetMacro(Q, unsigned int);
itkGetConstReferenceMacro(Q, unsigned int);
protected:
ComplexMomentPathFunction();
~ComplexMomentPathFunction() override
{
}
void PrintSelf(std::ostream& os, itk::Indent indent) const override;
private:
ComplexMomentPathFunction(const Self&) = delete;
void operator=(const Self&) = delete;
ComplexPrecisionType EvaluateComplexMomentAtIndex(VertexType index) const;
unsigned int m_P;
unsigned int m_Q;
};
} // namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbComplexMomentPathFunction.hxx"
#endif
#endif
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