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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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.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 itkShapeRelabelLabelMapFilter_h
#define itkShapeRelabelLabelMapFilter_h
#include "itkInPlaceLabelMapFilter.h"
#include "itkLabelObject.h"
#include "itkShapeLabelObjectAccessors.h"
#include "itkProgressReporter.h"
namespace itk
{
/** \class ShapeRelabelLabelMapFilter
* \brief Relabels objects according to their shape attributes.
*
* The ShapeRelabelImageFilter relabels a label collection image according to the shape attributes of
* the objects. The label produced are always consecutives.
*
* This implementation was taken from the Insight Journal paper:
* https://hdl.handle.net/1926/584 or
* http://www.insight-journal.org/browse/publication/176
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* \sa ShapeLabelObject, RelabelComponentImageFilter
* \ingroup ImageEnhancement MathematicalMorphologyImageFilters
* \ingroup ITKLabelMap
*/
template< typename TImage >
class ITK_TEMPLATE_EXPORT ShapeRelabelLabelMapFilter:
public InPlaceLabelMapFilter< TImage >
{
public:
/** Standard class typedefs. */
typedef ShapeRelabelLabelMapFilter Self;
typedef InPlaceLabelMapFilter< TImage > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Some convenient typedefs. */
typedef TImage ImageType;
typedef typename ImageType::Pointer ImagePointer;
typedef typename ImageType::ConstPointer ImageConstPointer;
typedef typename ImageType::PixelType PixelType;
typedef typename ImageType::IndexType IndexType;
typedef typename ImageType::LabelObjectType LabelObjectType;
typedef typename LabelObjectType::AttributeType AttributeType;
/** ImageDimension constants */
itkStaticConstMacro(ImageDimension, unsigned int, TImage::ImageDimension);
/** Standard New method. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(ShapeRelabelLabelMapFilter, InPlaceLabelMapFilter);
#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 order of labeling of the objects. By default, the objects with
* the highest attribute values are labeled first. Setting ReverseOrdering to true
* causes the object with the smallest attributes to be labeled first.
*/
itkSetMacro(ReverseOrdering, bool);
itkGetConstReferenceMacro(ReverseOrdering, bool);
itkBooleanMacro(ReverseOrdering);
/**
* Set/Get the attribute to use.
* Default is "Size".
*/
itkGetConstMacro(Attribute, AttributeType);
itkSetMacro(Attribute, AttributeType);
void SetAttribute(const std::string & s)
{
this->SetAttribute( LabelObjectType::GetAttributeFromName(s) );
}
protected:
ShapeRelabelLabelMapFilter();
~ShapeRelabelLabelMapFilter() ITK_OVERRIDE {}
void GenerateData() ITK_OVERRIDE;
template< typename TAttributeAccessor >
void TemplatedGenerateData(const TAttributeAccessor &)
{
// Allocate the output
this->AllocateOutputs();
ImageType *output = this->GetOutput();
typedef typename LabelObjectType::Pointer LabelObjectPointer;
typedef std::vector< LabelObjectPointer > VectorType;
ProgressReporter progress( this, 0, 2 * output->GetNumberOfLabelObjects() );
// Get the label objects in a vector, so they can be sorted
VectorType labelObjects;
labelObjects.reserve( output->GetNumberOfLabelObjects() );
for ( typename ImageType::Iterator it( output );
! it.IsAtEnd();
++it )
{
labelObjects.push_back(it.GetLabelObject());
progress.CompletedPixel();
}
// Instantiate the comparator and sort the vector
if ( m_ReverseOrdering )
{
std::sort( labelObjects.begin(), labelObjects.end(),
Functor::LabelObjectReverseComparator< LabelObjectType, TAttributeAccessor >() );
}
else
{
std::sort( labelObjects.begin(), labelObjects.end(),
Functor::LabelObjectComparator< LabelObjectType, TAttributeAccessor >() );
}
// progress.CompletedPixel();
// and put back the objects in the map
output->ClearLabels();
PixelType label = NumericTraits<PixelType>::ZeroValue();
typename VectorType::const_iterator it2 = labelObjects.begin();
while ( it2 != labelObjects.end() )
{
// Avoid the background label if it is used
if ( label == output->GetBackgroundValue() )
{
label++;
}
( *it2 )->SetLabel(label);
output->AddLabelObject(*it2);
// Go to the next label
label++;
progress.CompletedPixel();
++it2;
}
}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
bool m_ReverseOrdering;
AttributeType m_Attribute;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(ShapeRelabelLabelMapFilter);
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkShapeRelabelLabelMapFilter.hxx"
#endif
#endif
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