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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 otbContingencyTableCalculator_hxx
#define otbContingencyTableCalculator_hxx
#include "otbContingencyTableCalculator.h"
#include "itkMacro.h"
#include "itkVariableLengthVector.h"
#include "itkListSample.h"
#include <set>
#include <iterator>
namespace otb
{
template <class TClassLabel>
ContingencyTableCalculator<TClassLabel>::ContingencyTableCalculator() : m_NumberOfRefClasses(0), m_NumberOfProdClasses(0), m_NumberOfSamples(0)
{
}
template <class TClassLabel>
void ContingencyTableCalculator<TClassLabel>::Clear()
{
m_LabelCount.clear();
m_NumberOfRefClasses = 0;
m_NumberOfProdClasses = 0;
m_NumberOfSamples = 0;
}
template <class TClassLabel>
template <class TRefIterator, class TProdIterator>
void ContingencyTableCalculator<TClassLabel>::Compute(TRefIterator refBegin, TRefIterator refEnd, TProdIterator prodBegin, TProdIterator prodEnd)
{
while (refBegin != refEnd && prodBegin != prodEnd)
{
++m_LabelCount[refBegin.GetMeasurementVector()[0]][prodBegin.GetMeasurementVector()[0]];
++refBegin;
++prodBegin;
++m_NumberOfSamples;
}
if (refBegin != refEnd || prodBegin != prodEnd)
itkExceptionMacro(<< "The references and produced labels did not end simultaneously.");
}
template <class TClassLabel>
template <class TRefIterator, class TProdIterator>
void ContingencyTableCalculator<TClassLabel>::Compute(TRefIterator itRef, TProdIterator itProd, bool refHasNoData,
typename TRefIterator::InternalPixelType refNoData, bool prodHasNoData,
typename TProdIterator::InternalPixelType prodNoData)
{
while (!itRef.IsAtEnd() && !itProd.IsAtEnd())
{
if ((!prodHasNoData || itProd.Get() != prodNoData) && (!refHasNoData || itRef.Get() != refNoData))
{
++m_LabelCount[itRef.Get()][itProd.Get()];
++m_NumberOfSamples;
}
++itRef;
++itProd;
}
if (!itRef.IsAtEnd() || !itProd.IsAtEnd())
itkExceptionMacro(<< "The references and produced labels did not end simultaneously.");
}
template <class TClassLabel>
typename ContingencyTableCalculator<TClassLabel>::ContingencyTablePointerType ContingencyTableCalculator<TClassLabel>::BuildContingencyTable()
{
std::set<TClassLabel> refLabels;
std::set<TClassLabel> prodLabels;
// Retrieve all labels needed to iterate over all labelCount
for (typename MapOfClassesType::const_iterator refIt = m_LabelCount.begin(); refIt != m_LabelCount.end(); ++refIt)
{
refLabels.insert(refIt->first);
CountMapType cmt = refIt->second;
for (typename CountMapType::const_iterator prodIt = cmt.begin(); prodIt != cmt.end(); ++prodIt)
{
prodLabels.insert(prodIt->first);
}
}
m_NumberOfRefClasses = refLabels.size();
m_NumberOfProdClasses = prodLabels.size();
unsigned int rows = static_cast<unsigned int>(m_NumberOfRefClasses);
unsigned int cols = static_cast<unsigned int>(m_NumberOfProdClasses);
std::vector<TClassLabel> referenceLabels(refLabels.begin(), refLabels.end());
std::vector<TClassLabel> producedLabels(prodLabels.begin(), prodLabels.end());
ContingencyTablePointerType contingencyTable = ContingencyTableType::New();
contingencyTable->SetLabels(referenceLabels, producedLabels);
for (unsigned int i = 0; i < rows; ++i)
for (unsigned int j = 0; j < cols; ++j)
contingencyTable->matrix(i, j) = m_LabelCount[referenceLabels[i]][producedLabels[j]];
return contingencyTable;
}
}
#endif
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