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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 itkJointHistogramMutualInformationComputeJointPDFThreaderBase_h
#define itkJointHistogramMutualInformationComputeJointPDFThreaderBase_h
#include "itkDomainThreader.h"
#include "itkImage.h"
#include <memory> // For unique_ptr.
namespace itk
{
/** \class JointHistogramMutualInformationComputeJointPDFThreaderBase
* \brief Compute the JointPDF image.
*
* This is a helper to compute the joint pdf image for the
* JointHistogramMutualInformationImageToImageMetricv4.
*
* \ingroup ITKMetricsv4
*/
template <typename TDomainPartitioner, typename TJointHistogramMetric>
class ITK_TEMPLATE_EXPORT JointHistogramMutualInformationComputeJointPDFThreaderBase
: public DomainThreader<TDomainPartitioner, TJointHistogramMetric>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(JointHistogramMutualInformationComputeJointPDFThreaderBase);
/** Standard class type aliases. */
using Self = JointHistogramMutualInformationComputeJointPDFThreaderBase;
using Superclass = DomainThreader<TDomainPartitioner, TJointHistogramMetric>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
itkOverrideGetNameOfClassMacro(JointHistogramMutualInformationComputeJointPDFThreaderBase);
/** Superclass types. */
using typename Superclass::DomainType;
using typename Superclass::AssociateType;
/** Types of the associate class. */
using JointHistogramMetricType = TJointHistogramMetric;
using VirtualImageType = typename JointHistogramMetricType::VirtualImageType;
using VirtualIndexType = typename JointHistogramMetricType::VirtualIndexType;
using VirtualPointType = typename JointHistogramMetricType::VirtualPointType;
using JointPDFType = typename JointHistogramMetricType::JointPDFType;
using JointPDFIndexType = typename JointHistogramMetricType::JointPDFIndexType;
using JointPDFPointType = typename JointHistogramMetricType::JointPDFPointType;
using JointPDFValueType = typename JointHistogramMetricType::JointPDFValueType;
using InternalComputationValueType = typename JointHistogramMetricType::InternalComputationValueType;
protected:
JointHistogramMutualInformationComputeJointPDFThreaderBase();
~JointHistogramMutualInformationComputeJointPDFThreaderBase() override = default;
/** Create the \c m_JointPDFPerThread's. */
void
BeforeThreadedExecution() override;
/** Called by the \c ThreadedExecution of derived classes. */
virtual void
ProcessPoint(const VirtualIndexType & virtualIndex,
const VirtualPointType & virtualPoint,
const ThreadIdType threadId);
/** Collect the results per and normalize. */
void
AfterThreadedExecution() override;
using JointHistogramType = Image<SizeValueType, 2>;
// TODO: This needs updating
struct JointHistogramMIPerThreadStruct
{
typename JointHistogramType::Pointer JointHistogram;
SizeValueType JointHistogramCount;
};
itkPadStruct(ITK_CACHE_LINE_ALIGNMENT, JointHistogramMIPerThreadStruct, PaddedJointHistogramMIPerThreadStruct);
itkAlignedTypedef(ITK_CACHE_LINE_ALIGNMENT,
PaddedJointHistogramMIPerThreadStruct,
AlignedJointHistogramMIPerThreadStruct);
std::unique_ptr<AlignedJointHistogramMIPerThreadStruct[]> m_JointHistogramMIPerThreadVariables;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkJointHistogramMutualInformationComputeJointPDFThreaderBase.hxx"
#endif
#endif
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