itkBilateralImageFilter.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 __itkBilateralImageFilter_h
#define __itkBilateralImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkFixedArray.h"
#include "itkNeighborhoodIterator.h"
#include "itkNeighborhood.h"

namespace itk
{
template< class TInputImage, class TOutputImage >
class ITK_EXPORT BilateralImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef BilateralImageFilter                            Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(BilateralImageFilter, ImageToImageFilter);

  typedef TInputImage  InputImageType;
  typedef TOutputImage OutputImageType;

  typedef typename Superclass::OutputImageRegionType OutputImageRegionType;

  typedef typename TOutputImage::PixelType                    OutputPixelType;
  typedef typename TOutputImage::InternalPixelType            OutputInternalPixelType;
  typedef typename NumericTraits< OutputPixelType >::RealType OutputPixelRealType;
  typedef typename TInputImage::PixelType                     InputPixelType;
  typedef typename TInputImage::InternalPixelType             InputInternalPixelType;

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

  typedef FixedArray< double, itkGetStaticConstMacro(ImageDimension) > ArrayType;

  typedef ConstNeighborhoodIterator< TInputImage > NeighborhoodIteratorType;

  typedef
  Neighborhood< double, itkGetStaticConstMacro(ImageDimension) > KernelType;
  typedef typename KernelType::SizeType      SizeType;
  typedef typename KernelType::SizeValueType SizeValueType;

  typedef typename KernelType::Iterator      KernelIteratorType;
  typedef typename KernelType::ConstIterator KernelConstIteratorType;

  typedef
  Image< double, itkGetStaticConstMacro(ImageDimension) > GaussianImageType;

  itkSetMacro(DomainSigma, ArrayType);
  itkGetConstMacro(DomainSigma, const ArrayType);
  itkSetMacro(RangeSigma, double);
  itkGetConstMacro(RangeSigma, double);
  itkGetConstMacro(FilterDimensionality, unsigned int);
  itkSetMacro(FilterDimensionality, unsigned int);

  void SetDomainSigma(const double v)
  {
    m_DomainSigma.Fill(v);
  }

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

  void SetRadius(const SizeValueType);

  itkSetMacro(Radius, SizeType);
  itkGetConstReferenceMacro(Radius, SizeType);

  itkSetMacro(NumberOfRangeGaussianSamples, unsigned long);
  itkGetConstMacro(NumberOfRangeGaussianSamples, unsigned long);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( OutputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< OutputPixelType > ) );

#endif

protected:
  BilateralImageFilter()
  {
    m_Radius.Fill(1);
    m_AutomaticKernelSize = true;
    m_DomainSigma.Fill(4.0);
    m_RangeSigma = 50.0;
    m_FilterDimensionality = ImageDimension;
    m_NumberOfRangeGaussianSamples = 100;
    m_DynamicRange = 0.0;
    m_DynamicRangeUsed = 0.0;
    m_DomainMu = 2.5;  // keep small to keep kernels small
    m_RangeMu = 4.0;   // can be bigger then DomainMu since we only
                       // index into a single table
  }

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

  void BeforeThreadedGenerateData();

  void ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
                            ThreadIdType threadId);

  virtual void GenerateInputRequestedRegion()
  throw( InvalidRequestedRegionError );

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

  double m_RangeSigma;

  ArrayType m_DomainSigma;

  double m_DomainMu;
  double m_RangeMu;

  unsigned int m_FilterDimensionality;

  KernelType m_GaussianKernel;
  SizeType   m_Radius;
  bool       m_AutomaticKernelSize;

  unsigned long         m_NumberOfRangeGaussianSamples;
  double                m_DynamicRange;
  double                m_DynamicRangeUsed;
  std::vector< double > m_RangeGaussianTable;
};
} // end namespace itk

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

#endif