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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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 itkLabeledPointSetToPointSetMetricv4_h
#define itkLabeledPointSetToPointSetMetricv4_h
#include "itkPointSetToPointSetMetricv4.h"
#include <vector>
namespace itk
{
/** \class LabeledPointSetToPointSetMetricv4
* \brief Computes the distance metric and gradient between two
* labeled point sets.
*
* This class is generic in that it takes an unlabeled point set metric,
* such as one of the following options
*
* \li \c EuclideanDistancePointSetToPointSetMetricv4 (default)
* \li \c ExpectationBasedPointSetToPointSetMetricv4
* \li \c JensenHavrdaCharvatTsallisPointSetToPointSetMetricv4
*
* where it is assumed that the point set \c PixelType associated with
* each point is a label (i.e. \c LabelEnum). This class is used to find
* the total metric and total derivative based on the matching between the
* separate fixed and moving labeled point sets. This class first determines
* the common label set between the fixed and moving point sets. For each
* common label, the specified unlabeled point set metric is cloned and the
* fixed and moving point subset associated with that common label is specified
* as the fixed and moving point set input. Functionality in the base class
* (\c PointSetToPointSetMetric) is used to accumulated the value and gradient.
*
* \author Nick Tustison
*
* \ingroup ITKMetricsv4
*/
template <typename TFixedPointSet,
typename TMovingPointSet = TFixedPointSet,
class TInternalComputationValueType = double>
class ITK_TEMPLATE_EXPORT LabeledPointSetToPointSetMetricv4
: public PointSetToPointSetMetricv4<TFixedPointSet, TMovingPointSet, TInternalComputationValueType>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(LabeledPointSetToPointSetMetricv4);
/** Standard class type aliases. */
using Self = LabeledPointSetToPointSetMetricv4;
using Superclass = PointSetToPointSetMetricv4<TFixedPointSet, TMovingPointSet, TInternalComputationValueType>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(LabeledPointSetToPointSetMetricv4);
using FixedPointSetType = TFixedPointSet;
using FixedPointSetPointer = typename FixedPointSetType::Pointer;
using MovingPointSetType = TMovingPointSet;
using MovingPointSetPointer = typename MovingPointSetType::Pointer;
/** Types transferred from the base class */
using typename Superclass::MeasureType;
using typename Superclass::DerivativeType;
using typename Superclass::LocalDerivativeType;
using typename Superclass::PointType;
using typename Superclass::PointIdentifier;
using LabelType = typename Superclass::PixelType;
using LabelSetType = std::vector<LabelType>;
using PointSetMetricType = Superclass;
using PointSetMetricPointer = typename PointSetMetricType::Pointer;
/**
* Initialize the metric by making sure that all the components
* are present and plugged together correctly.
*/
void
Initialize() override;
/**
* Calculates the local metric value for a single point. The label type
* is used to segregate the computation.
*/
MeasureType
GetLocalNeighborhoodValue(const PointType &, const LabelType &) const override;
/**
* Calculates the local value and derivative for a single point. The label type
* is used to segregate the computation.
*/
void
GetLocalNeighborhoodValueAndDerivative(const PointType &,
MeasureType &,
LocalDerivativeType &,
const LabelType &) const override;
/**
* Set/get the specific unlabeled point set metric type. Default is
* the \c EuclideanDistancePointSetToPointSetMetricv4.
*/
itkSetObjectMacro(PointSetMetric, PointSetMetricType);
itkGetModifiableObjectMacro(PointSetMetric, PointSetMetricType);
/**
* Ensure label type is an integer type
*/
itkConceptMacro(LabelTypeIsInteger, (Concept::IsInteger<LabelType>));
protected:
LabeledPointSetToPointSetMetricv4();
~LabeledPointSetToPointSetMetricv4() override = default;
/** PrintSelf function */
void
PrintSelf(std::ostream & os, Indent indent) const override;
private:
/**
* Private function to find the common label set for the moving
* and fixed point sets.
*/
void
DetermineCommonPointSetLabels();
/**
* Private function to create a fixed point set from the input fixed point
* set with a specific label
*/
FixedPointSetPointer
GetLabeledFixedPointSet(const LabelType) const;
/**
* Private function to create a moving point set from the input moving point
* set with a specific label
*/
MovingPointSetPointer
GetLabeledMovingPointSet(const LabelType) const;
PointSetMetricPointer m_PointSetMetric{};
std::vector<PointSetMetricPointer> m_PointSetMetricClones{};
LabelSetType m_FixedPointSetLabels{};
LabelSetType m_MovingPointSetLabels{};
LabelSetType m_CommonPointSetLabels{};
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkLabeledPointSetToPointSetMetricv4.hxx"
#endif
#endif
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