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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 itkMinimumMaximumImageCalculator_hxx
#define itkMinimumMaximumImageCalculator_hxx
#include "itkImageRegionConstIteratorWithIndex.h"
namespace itk
{
template <typename TInputImage>
void
MinimumMaximumImageCalculator<TInputImage>::Compute()
{
if (!m_RegionSetByUser)
{
m_Region = m_Image->GetRequestedRegion();
}
ImageRegionConstIteratorWithIndex<TInputImage> it(m_Image, m_Region);
m_Maximum = NumericTraits<PixelType>::NonpositiveMin();
m_Minimum = NumericTraits<PixelType>::max();
while (!it.IsAtEnd())
{
const PixelType value = it.Get();
if (value > m_Maximum)
{
m_Maximum = value;
m_IndexOfMaximum = it.GetIndex();
}
if (value < m_Minimum)
{
m_Minimum = value;
m_IndexOfMinimum = it.GetIndex();
}
++it;
}
}
template <typename TInputImage>
void
MinimumMaximumImageCalculator<TInputImage>::ComputeMinimum()
{
if (!m_RegionSetByUser)
{
m_Region = m_Image->GetRequestedRegion();
}
ImageRegionConstIteratorWithIndex<TInputImage> it(m_Image, m_Region);
m_Minimum = NumericTraits<PixelType>::max();
while (!it.IsAtEnd())
{
const PixelType value = it.Get();
if (value < m_Minimum)
{
m_Minimum = value;
m_IndexOfMinimum = it.GetIndex();
}
++it;
}
}
template <typename TInputImage>
void
MinimumMaximumImageCalculator<TInputImage>::ComputeMaximum()
{
if (!m_RegionSetByUser)
{
m_Region = m_Image->GetRequestedRegion();
}
ImageRegionConstIteratorWithIndex<TInputImage> it(m_Image, m_Region);
m_Maximum = NumericTraits<PixelType>::NonpositiveMin();
while (!it.IsAtEnd())
{
const PixelType value = it.Get();
if (value > m_Maximum)
{
m_Maximum = value;
m_IndexOfMaximum = it.GetIndex();
}
++it;
}
}
template <typename TInputImage>
void
MinimumMaximumImageCalculator<TInputImage>::SetRegion(const RegionType & region)
{
m_Region = region;
m_RegionSetByUser = true;
}
template <typename TInputImage>
void
MinimumMaximumImageCalculator<TInputImage>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Minimum: " << static_cast<typename NumericTraits<PixelType>::PrintType>(m_Minimum) << std::endl;
os << indent << "Maximum: " << static_cast<typename NumericTraits<PixelType>::PrintType>(m_Maximum) << std::endl;
os << indent << "Index of Minimum: " << m_IndexOfMinimum << std::endl;
os << indent << "Index of Maximum: " << m_IndexOfMaximum << std::endl;
itkPrintSelfObjectMacro(Image);
os << indent << "Region: " << std::endl;
m_Region.Print(os, indent.GetNextIndent());
os << indent << "Region set by User: " << m_RegionSetByUser << std::endl;
}
} // end namespace itk
#endif
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