/*=========================================================================
 *
 *  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 itkStatisticsUniqueLabelMapFilter_h
#define itkStatisticsUniqueLabelMapFilter_h

#include "itkShapeUniqueLabelMapFilter.h"
#include "itkStatisticsLabelObject.h"

namespace itk
{
/** \class StatisticsUniqueLabelMapFilter
 * \brief Remove some pixels in the label object according to the value of
 * their statistics attribute to ensure that a pixel is not in multiple
 * objects.
 *
 * \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://hdl.handle.net/1926/584  or
 * http://www.insight-journal.org/browse/publication/176
 *
 * \sa ShapeLabelObject, BinaryShapeOpeningImageFilter, LabelStatisticsOpeningImageFilter
 * \ingroup ImageEnhancement  MathematicalMorphologyImageFilters
 * \ingroup ITKLabelMap
 */
template< typename TImage >
class StatisticsUniqueLabelMapFilter:
  public ShapeUniqueLabelMapFilter< TImage >
{
public:
  /** Standard class typedefs. */
  typedef StatisticsUniqueLabelMapFilter      Self;
  typedef ShapeUniqueLabelMapFilter< 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(StatisticsUniqueLabelMapFilter, ShapeUniqueLabelMapFilter);

#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

protected:
  StatisticsUniqueLabelMapFilter();
  ~StatisticsUniqueLabelMapFilter() {}

  virtual void GenerateData() ITK_OVERRIDE;

private:
  StatisticsUniqueLabelMapFilter(const Self &) ITK_DELETE_FUNCTION;
  void operator=(const Self &) ITK_DELETE_FUNCTION;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkStatisticsUniqueLabelMapFilter.hxx"
#endif

#endif
