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101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkImageWeightedSum.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkImageWeightedSum
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* @brief adds any number of images, weighting
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* each according to the weight set using this->SetWeights(i,w).
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*
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*
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* All weights are normalized so they will sum to 1.
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* Images must have the same extents. Output is
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*
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* @par Thanks:
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* The original author of this class is Lauren O'Donnell (MIT) for Slicer
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*/
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#ifndef vtkImageWeightedSum_h
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#define vtkImageWeightedSum_h
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#include "vtkImagingMathModule.h" // For export macro
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#include "vtkThreadedImageAlgorithm.h"
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class vtkDoubleArray;
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class VTKIMAGINGMATH_EXPORT vtkImageWeightedSum : public vtkThreadedImageAlgorithm
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{
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public:
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static vtkImageWeightedSum *New();
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vtkTypeMacro(vtkImageWeightedSum,vtkThreadedImageAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@{
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/**
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* The weights control the contribution of each input to the sum.
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* They will be normalized to sum to 1 before filter execution.
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*/
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virtual void SetWeights(vtkDoubleArray*);
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vtkGetObjectMacro(Weights, vtkDoubleArray);
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//@}
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/**
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* Change a specific weight. Reallocation is done
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*/
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virtual void SetWeight(vtkIdType id, double weight);
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//@{
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/**
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* Setting NormalizeByWeight on will divide the
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* final result by the total weight of the component functions.
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* This process does not otherwise normalize the weighted sum
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* By default, NormalizeByWeight is on.
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*/
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vtkGetMacro(NormalizeByWeight, int);
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vtkSetClampMacro(NormalizeByWeight, int, 0, 1);
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vtkBooleanMacro(NormalizeByWeight, int);
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//@}
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/**
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* Compute the total value of all the weight
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*/
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double CalculateTotalWeight();
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protected:
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vtkImageWeightedSum();
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~vtkImageWeightedSum();
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// Array to hold all the weights
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vtkDoubleArray *Weights;
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// Boolean flag to divide by sum or not
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int NormalizeByWeight;
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int RequestInformation (vtkInformation * vtkNotUsed(request),
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vtkInformationVector** vtkNotUsed( inputVector ),
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vtkInformationVector *outputVector);
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void ThreadedRequestData (vtkInformation* request,
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vtkInformationVector** inputVector,
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vtkInformationVector* outputVector,
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vtkImageData ***inData, vtkImageData **outData,
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int ext[6], int id);
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int FillInputPortInformation(int i, vtkInformation* info);
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private:
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vtkImageWeightedSum(const vtkImageWeightedSum&) VTK_DELETE_FUNCTION;
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void operator=(const vtkImageWeightedSum&) VTK_DELETE_FUNCTION;
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};
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#endif
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