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vtkImageWeightedSum.h
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vtkImageWeightedSum.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageWeightedSum.h
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.
=========================================================================*/
// .NAME vtkImageWeightedSum - adds any number of images, weighting
// each according to the weight set using this->SetWeights(i,w).
//
// .SECTION Description
// All weights are normalized so they will sum to 1.
// Images must have the same extents. Output is
//
// .SECTION Thanks
// The original author of this class is Lauren O'Donnell (MIT) for Slicer
#ifndef vtkImageWeightedSum_h
#define vtkImageWeightedSum_h
#include "vtkImagingMathModule.h" // For export macro
#include "vtkThreadedImageAlgorithm.h"
class vtkDoubleArray;
class VTKIMAGINGMATH_EXPORT vtkImageWeightedSum : public vtkThreadedImageAlgorithm
{
public:
static vtkImageWeightedSum *New();
vtkTypeMacro(vtkImageWeightedSum,vtkThreadedImageAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// The weights control the contribution of each input to the sum.
// They will be normalized to sum to 1 before filter execution.
virtual void SetWeights(vtkDoubleArray*);
vtkGetObjectMacro(Weights, vtkDoubleArray);
// Description:
// Change a specific weight. Reallocation is done
virtual void SetWeight(vtkIdType id, double weight);
// Description:
// Setting NormalizeByWeight on will divide the
// final result by the total weight of the component functions.
// This process does not otherwise normalize the weighted sum
// By default, NormalizeByWeight is on.
vtkGetMacro(NormalizeByWeight, int);
vtkSetClampMacro(NormalizeByWeight, int, 0, 1);
vtkBooleanMacro(NormalizeByWeight, int);
// Description:
// Compute the total value of all the weight
double CalculateTotalWeight();
protected:
vtkImageWeightedSum();
~vtkImageWeightedSum();
// Array to hold all the weights
vtkDoubleArray *Weights;
// Boolean flag to divide by sum or not
int NormalizeByWeight;
int RequestInformation (vtkInformation * vtkNotUsed(request),
vtkInformationVector** vtkNotUsed( inputVector ),
vtkInformationVector *outputVector);
void ThreadedRequestData (vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector,
vtkImageData ***inData, vtkImageData **outData,
int ext[6], int id);
int FillInputPortInformation(int i, vtkInformation* info);
private:
vtkImageWeightedSum(const vtkImageWeightedSum&); // Not implemented.
void operator=(const vtkImageWeightedSum&); // Not implemented.
};
#endif