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/*=========================================================================
Program: Advanced Normalization Tools
Copyright (c) ConsortiumOfANTS. All rights reserved.
See accompanying COPYING.txt or
https://github.com/stnava/ANTs/blob/master/ANTSCopyright.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 __antsListSampleFunction_h
#define __antsListSampleFunction_h
#include "itkFunctionBase.h"
#include "itkArray.h"
namespace itk
{
namespace ants
{
namespace Statistics
{
/** \class ListSampleFunction
* \brief Evaluates a function of an image at specified position.
*
* ListSampleFunction is a baseclass for all objects that evaluates
* a function of a list sample at a measurement
* This class is templated over the input list type, the type
* of the function output and the coordinate representation type
* (e.g. float or double).
*
* The input list sample is set via method SetInputListSample().
* The methods Evaluate() evaluates the function at a measurement vector.
*
* \ingroup ListSampleFunctions
*/
template <typename TInputListSample, typename TOutput, typename TCoordRep = float>
class ListSampleFunction : public FunctionBase<typename TInputListSample::MeasurementVectorType, TOutput>
{
public:
/** Standard class typedefs. */
typedef ListSampleFunction Self;
typedef FunctionBase<TInputListSample, TOutput> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(ListSampleFunction, FunctionBase);
/** InputListSampleType typedef support. */
typedef TInputListSample InputListSampleType;
/** Array typedef for weights */
typedef Array<double> ListSampleWeightArrayType;
/** InputPixel typedef support */
typedef typename InputListSampleType::MeasurementVectorType InputMeasurementVectorType;
typedef typename InputListSampleType::MeasurementType InputMeasurementType;
/** OutputType typedef support. */
typedef TOutput OutputType;
/** CoordRepType typedef support. */
typedef TCoordRep CoordRepType;
/** Set the input point set.
* \warning this method caches BufferedRegion information.
* If the BufferedRegion has changed, user must call
* SetInputListSample again to update cached values. */
virtual void
SetInputListSample(const InputListSampleType * ptr)
{
this->SetIndexedInputListSample(0, ptr);
}
virtual void
SetIndexedInputListSample(const unsigned int d, const InputListSampleType * ptr);
/** Sets the weights using an array */
virtual void
SetListSampleWeights(ListSampleWeightArrayType * array)
{
this->SetListSampleWeights(0, array);
}
virtual void
SetListSampleWeights(const unsigned int, ListSampleWeightArrayType *);
/** Get the input image. */
virtual const InputListSampleType *
GetInputListSample(const unsigned int idx = 0) const;
/** Clear the input list sample to free memory */
virtual void
ClearInputListSample(const unsigned int idx = 0)
{
this->SetIndexedInputListSample(idx, nullptr);
}
/** Gets the weights array */
virtual ListSampleWeightArrayType *
GetListSampleWeights(const unsigned int idx = 0);
/** Evaluate the function at specified Point position.
* Subclasses must provide this method. */
TOutput
Evaluate(const InputMeasurementVectorType & measurement) const override = 0;
protected:
ListSampleFunction();
~ListSampleFunction() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
/** Const pointer to the input image. */
std::vector<typename InputListSampleType::ConstPointer> m_ListSamples;
std::vector<ListSampleWeightArrayType *> m_ListSampleWeights;
private:
ListSampleFunction(const Self &) = delete;
void
operator=(const Self &) = delete;
};
} // end of namespace Statistics
} // end of namespace ants
} // end of namespace itk
// Define instantiation macro for this template.
#define ITK_TEMPLATE_ListSampleFunction(_, EXPORT, x, y) \
namespace itk \
{ \
_(3(class EXPORT ListSampleFunction<ITK_TEMPLATE_3 x>)) \
namespace Templates \
{ \
typedef ListSampleFunction<ITK_TEMPLATE_3 x> ListSampleFunction##y; \
} \
}
#if ITK_TEMPLATE_EXPLICIT
# include "Templates/antsListSampleFunction+-.h"
#endif
#ifndef ITK_MANUAL_INSTANTIATION
# include "antsListSampleFunction.hxx"
#endif
#endif
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