itkRobustAutomaticThresholdCalculator.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 __itkRobustAutomaticThresholdCalculator_h
#define __itkRobustAutomaticThresholdCalculator_h

#include "itkMacro.h"
#include "itkImage.h"

namespace itk
{
template< class TInputImage, class TGradientImage >
class ITK_EXPORT RobustAutomaticThresholdCalculator:public Object
{
public:
  typedef RobustAutomaticThresholdCalculator Self;
  typedef Object                             Superclass;
  typedef SmartPointer< Self >               Pointer;
  typedef SmartPointer< const Self >         ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(RobustAutomaticThresholdCalculator, Object);

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

  typedef TInputImage    InputImageType;
  typedef TGradientImage GradientImageType;

  typedef typename InputImageType::Pointer         InputImagePointer;
  typedef typename InputImageType::ConstPointer    InputImageConstPointer;
  typedef typename GradientImageType::Pointer      GradientImagePointer;
  typedef typename GradientImageType::ConstPointer GradientImageConstPointer;
  typedef typename InputImageType::PixelType       InputPixelType;
  typedef typename GradientImageType::PixelType    GradientPixelType;

  virtual void SetInput(const InputImageType *image)
  {
    if ( m_Input != image )
      {
      m_Input = image;
      this->Modified();
      m_Valid = false;
      }
  }

  virtual void SetGradient(const GradientImageType *image)
  {
    if ( m_Gradient != image )
      {
      m_Gradient = image;
      this->Modified();
      m_Valid = false;
      }
  }

  itkSetMacro(Pow, double);
  itkGetConstMacro(Pow, double);

  void Compute(void);

  const InputPixelType & GetOutput() const;

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

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

  bool           m_Valid;                      // Have moments been computed
                                               // yet?
  double         m_Pow;
  InputPixelType m_Output;

  InputImageConstPointer    m_Input;
  GradientImageConstPointer m_Gradient;
};  // class RobustAutomaticThresholdCalculator
} // end namespace itk

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

#endif /* __itkRobustAutomaticThresholdCalculator_h */