itkAdaptiveHistogramEqualizationImageFilter.h

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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 itkAdaptiveHistogramEqualizationImageFilter_h
#define itkAdaptiveHistogramEqualizationImageFilter_h

#include "itkBoxImageFilter.h"
#include "itkImage.h"

namespace itk
{
template< typename TImageType >
class AdaptiveHistogramEqualizationImageFilter:
  public BoxImageFilter< TImageType, TImageType >
{
public:

  typedef AdaptiveHistogramEqualizationImageFilter     Self;
  typedef ImageToImageFilter< TImageType, TImageType > Superclass;
  typedef SmartPointer< Self >                         Pointer;
  typedef SmartPointer< const Self >                   ConstPointer;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TImageType::ImageDimension);

  itkNewMacro(Self);

  itkTypeMacro(AdaptiveHistogramEqualizationImageFilter, ImageToImageFilter);

  typedef TImageType                   ImageType;
  typedef typename ImageType::SizeType ImageSizeType;

  itkSetMacro(Alpha, float);
  itkGetConstMacro(Alpha, float);

  itkSetMacro(Beta, float);
  itkGetConstMacro(Beta, float);

  itkSetMacro(UseLookupTable, bool);
  itkGetConstMacro(UseLookupTable, bool);
  itkBooleanMacro(UseLookupTable);

protected:
  AdaptiveHistogramEqualizationImageFilter()
  {
    m_Alpha = .3;
    m_Beta = .3;
    this->SetRadius(5);
    m_UseLookupTable = false;
  }

  virtual ~AdaptiveHistogramEqualizationImageFilter(){}
  void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;

  void GenerateData() ITK_OVERRIDE;

private:
  AdaptiveHistogramEqualizationImageFilter(const Self &); //purposely not
                                                          // implemented
  void operator=(const Self &);                           //purposely not

  // implemented

  float m_Alpha;

  float m_Beta;

  bool m_UseLookupTable;

  float CumulativeFunction(float u, float v);
};
} // end namespace itk

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

#endif