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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 itkShapePositionLabelMapFilter_h
#define itkShapePositionLabelMapFilter_h
#include "itkInPlaceLabelMapFilter.h"
namespace itk
{
/**
* \class ShapePositionLabelMapFilter
* \brief Mark a single pixel in the label object which correspond to a position given by an attribute
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* This implementation was taken from the Insight Journal paper:
* https://www.insight-journal.org/browse/publication/176
*
* \sa ShapeLabelObject, BinaryShapeOpeningImageFilter, LabelStatisticsOpeningImageFilter
* \ingroup ImageEnhancement MathematicalMorphologyImageFilters
* \ingroup ITKLabelMap
*/
template <typename TImage>
class ITK_TEMPLATE_EXPORT ShapePositionLabelMapFilter : public InPlaceLabelMapFilter<TImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ShapePositionLabelMapFilter);
/** Standard class type aliases. */
using Self = ShapePositionLabelMapFilter;
using Superclass = InPlaceLabelMapFilter<TImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Some convenient type alias. */
using ImageType = TImage;
using ImagePointer = typename ImageType::Pointer;
using ImageConstPointer = typename ImageType::ConstPointer;
using PixelType = typename ImageType::PixelType;
using IndexType = typename ImageType::IndexType;
using LabelObjectType = typename ImageType::LabelObjectType;
using AttributeType = typename LabelObjectType::AttributeType;
/** ImageDimension constants */
static constexpr unsigned int ImageDimension = TImage::ImageDimension;
/** Standard New method. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ShapePositionLabelMapFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
/* itkConceptMacro(InputEqualityComparableCheck,
(Concept::EqualityComparable<InputImagePixelType>));
itkConceptMacro(IntConvertibleToInputCheck,
(Concept::Convertible<int, InputImagePixelType>));
itkConceptMacro(InputOStreamWritableCheck,
(Concept::OStreamWritable<InputImagePixelType>));*/
// End concept checking
#endif
/**
* Set/Get the attribute to use to get the object position. The default
* is "Centroid".
*/
itkGetConstMacro(Attribute, AttributeType);
itkSetMacro(Attribute, AttributeType);
void
SetAttribute(const std::string & s)
{
this->SetAttribute(LabelObjectType::GetAttributeFromName(s));
}
protected:
ShapePositionLabelMapFilter();
~ShapePositionLabelMapFilter() override = default;
void
ThreadedProcessLabelObject(LabelObjectType * labelObject) override;
template <typename TAttributeAccessor>
void
TemplatedThreadedProcessLabelObject(const TAttributeAccessor & accessor, bool physical, LabelObjectType * labelObject)
{
using AttributeValueType = typename TAttributeAccessor::AttributeValueType;
AttributeValueType position = accessor(labelObject);
// change it to an index position if it is physical
IndexType idx;
if (physical)
{
using CoordinateType = double;
Point<CoordinateType, ImageDimension> point;
// copy the position to a point, required by TransformPhysicalPointToIndex
for (unsigned int i = 0; i < ImageDimension; ++i)
{
// FIXME: This is a bug. The cast should be as in the following line
// where CoordinateType is used as the type to cast to. We are temporarily
// keeping this original line here to avoid confusing the patch for 64 bits.
point[i] = static_cast<OffsetValueType>(position[i]); // FIXME: use next line instead.
// point[i] = static_cast<CoordinateType>( position[i] );
}
idx = this->GetOutput()->TransformPhysicalPointToIndex(point);
}
else
{
// copy the position to the index, to avoid warnings
for (unsigned int i = 0; i < ImageDimension; ++i)
{
idx[i] = static_cast<IndexValueType>(position[i]);
}
}
// clear the label object
labelObject->Clear();
// and mark only the pixel we are interested in
labelObject->AddIndex(idx);
}
void
PrintSelf(std::ostream & os, Indent indent) const override;
AttributeType m_Attribute{};
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkShapePositionLabelMapFilter.hxx"
#endif
#endif
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