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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 itkMergeLabelMapFilter_h
#define itkMergeLabelMapFilter_h
#include "itkInPlaceLabelMapFilter.h"
namespace itk
{
/** \class MergeLabelMapFilter
* \brief Merges several Label Maps
*
* This filter takes one or more input Label Map and merges them.
*
* SetMethod() can be used to change how the filter manage the
* labels from the different label maps.
* KEEP (0): MergeLabelMapFilter do its best to keep the label unchanged,
* but if a label is already used in a previous label map, a new
* label is assigned.
* AGGREGATE (1): If the same label is found several times in the label maps,
* the label objects with the same label are merged.
* PACK (2): MergeLabelMapFilter relabel all the label objects by order of
* processing. No conflict can occur.
* STRICT (3): MergeLabelMapFilter keeps the labels unchanged and raises an
* exception if the same label is found in several images.
*
* 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 MergeLabelMapFilter:
public InPlaceLabelMapFilter< TImage >
{
public:
/** Standard class typedefs. */
typedef MergeLabelMapFilter 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::Pointer LabelObjectPointer;
/** ImageDimension constants */
itkStaticConstMacro(ImageDimension, unsigned int, TImage::ImageDimension);
/** Standard New method. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(MergeLabelMapFilter, 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
#ifdef STRICT
#undef STRICT
#endif
typedef enum {
KEEP = 0,
AGGREGATE = 1,
PACK = 2,
STRICT = 3
} MethodChoice;
/** Set/Get the method used to merge the label maps */
itkSetMacro(Method, MethodChoice);
itkGetConstReferenceMacro(Method, MethodChoice);
protected:
MergeLabelMapFilter();
~MergeLabelMapFilter() ITK_OVERRIDE {}
void GenerateData() ITK_OVERRIDE;
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
MethodChoice m_Method;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(MergeLabelMapFilter);
void MergeWithKeep();
void MergeWithAggregate();
void MergeWithPack();
void MergeWithStrict();
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMergeLabelMapFilter.hxx"
#endif
#endif
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