otbImageFunctionAdaptor.h

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/*
 * Copyright (C) 2005-2022 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 otbImageFunctionAdaptor_h
#define otbImageFunctionAdaptor_h
 
#include "itkImageFunction.h"
 
#include "otbVariableLengthVectorConverter.h"
#include "OTBImageBaseExport.h"
 
#include <complex>
 
namespace otb
{
template <class TInternalImageFunctionType, class TOutputPrecision = double>
class OTBImageBase_EXPORT_TEMPLATE ImageFunctionAdaptor
    : public itk::ImageFunction<typename TInternalImageFunctionType::InputImageType, itk::VariableLengthVector<TOutputPrecision>,
                                typename TInternalImageFunctionType::CoordRepType>
{
public:
  // Standard class typedefs. //
  typedef ImageFunctionAdaptor Self;
  typedef itk::ImageFunction<typename TInternalImageFunctionType::InputImageType, itk::VariableLengthVector<TOutputPrecision>,
                             typename TInternalImageFunctionType::CoordRepType>
                                        Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  // Run-time type information (and related methods). //
  itkTypeMacro(ImageFunctionAdaptor, ImageFunction);
 
  // Method for creation through the object factory. //
  itkNewMacro(Self);
 
  // InputImageType typedef support. //
  typedef typename TInternalImageFunctionType::InputImageType InputImageType;
  typedef typename TInternalImageFunctionType::CoordRepType   CoordRepType;
  typedef typename Superclass::IndexType                      IndexType;
  typedef typename Superclass::ContinuousIndexType            ContinuousIndexType;
  typedef typename Superclass::PointType                      PointType;
  typedef typename Superclass::OutputType                     OutputType;
  typedef typename OutputType::ValueType                      OutputValueType;
 
  // InternalImageFunction related typedefs //
  typedef TInternalImageFunctionType                     InternalImageFunctionType;
  typedef typename InternalImageFunctionType::OutputType InternalImageFunctionOutputType;
 
  // Converter related typedefs //
  typedef VariableLengthVectorConverter<InternalImageFunctionOutputType, TOutputPrecision> ConverterType;
 
 
  // Dimension of the underlying image. //
  itkStaticConstMacro(ImageDimension, unsigned int, InputImageType::ImageDimension);
 
  // Evalulate the function at specified index //
  OutputType EvaluateAtIndex(const IndexType& index) const override;
 
  // Evaluate the function at non-integer positions //
  OutputType Evaluate(const PointType& point) const override
  {
    IndexType index;
    this->ConvertPointToNearestIndex(point, index);
    return this->EvaluateAtIndex(index);
  }
  OutputType EvaluateAtContinuousIndex(const ContinuousIndexType& cindex) const override
  {
    IndexType index;
    this->ConvertContinuousIndexToNearestIndex(cindex, index);
    return this->EvaluateAtIndex(index);
  }
 
  // Accessors //
  itkGetConstMacro(InternalImageFunction, typename InternalImageFunctionType::Pointer);
  itkSetMacro(InternalImageFunction, typename InternalImageFunctionType::Pointer);
 
protected:
  ImageFunctionAdaptor();
  ~ImageFunctionAdaptor() override
  {
  }
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
private:
  ImageFunctionAdaptor(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  // Internal Image Function //
  typename InternalImageFunctionType::Pointer m_InternalImageFunction;
  // Converter //
  typename ConverterType::Pointer m_Converter;
};
 
} // end namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbImageFunctionAdaptor.hxx"
#endif
 
#endif