vtkImageDifference.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImageDifference.h,v $

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkImageDifference_h
#define __vtkImageDifference_h

#include "vtkThreadedImageAlgorithm.h"

class VTK_IMAGING_EXPORT vtkImageDifference : public vtkThreadedImageAlgorithm
{
public:
  static vtkImageDifference *New();
  vtkTypeRevisionMacro(vtkImageDifference,vtkThreadedImageAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  void SetImage(vtkDataObject *image) {this->SetInput(1,image);}
  vtkImageData *GetImage();


  double GetError(void);
  void GetError(double *e) { *e = this->GetError(); };
  

  double GetThresholdedError(void);
  void GetThresholdedError(double *e) { *e = this->GetThresholdedError(); };



  vtkSetMacro(Threshold,int);
  vtkGetMacro(Threshold,int);


  vtkSetMacro(AllowShift,int);
  vtkGetMacro(AllowShift,int);
  vtkBooleanMacro(AllowShift,int);


  vtkSetMacro(Averaging,int);
  vtkGetMacro(Averaging,int);
  vtkBooleanMacro(Averaging,int);

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

  double ErrorPerThread[VTK_MAX_THREADS];
  double ThresholdedErrorPerThread[VTK_MAX_THREADS];
  int AllowShift;
  int Threshold;
  int Averaging;
  
  virtual int RequestInformation (vtkInformation *, 
                                  vtkInformationVector **,
                                  vtkInformationVector *); 
  virtual int RequestUpdateExtent(vtkInformation *, 
                                  vtkInformationVector **,
                                  vtkInformationVector *);
  
  virtual void ThreadedRequestData(vtkInformation *request, 
                                   vtkInformationVector **inputVector, 
                                   vtkInformationVector *outputVector,
                                   vtkImageData ***inData, 
                                   vtkImageData **outData,
                                   int extent[6], int threadId);
  
private:
  vtkImageDifference(const vtkImageDifference&);  // Not implemented.
  void operator=(const vtkImageDifference&);  // Not implemented.
};

#endif

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