/usr/include/paraview/vtkImageVariance3D.h is in paraview-dev 5.0.1+dfsg1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70  | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkImageVariance3D.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 vtkImageVariance3D - Variance in a neighborhood.
// .SECTION Description
// vtkImageVariance3D replaces each pixel with a measurement of
// pixel variance in a elliptical neighborhood centered on that pixel.
// The value computed is not exactly the variance.
// The difference between the neighbor values and center value is computed
// and squared for each neighbor.  These values are summed and divided by
// the total number of neighbors to produce the output value.
#ifndef vtkImageVariance3D_h
#define vtkImageVariance3D_h
#include "vtkImagingGeneralModule.h" // For export macro
#include "vtkImageSpatialAlgorithm.h"
class vtkImageEllipsoidSource;
class VTKIMAGINGGENERAL_EXPORT vtkImageVariance3D : public vtkImageSpatialAlgorithm
{
public:
  static vtkImageVariance3D *New();
  vtkTypeMacro(vtkImageVariance3D,vtkImageSpatialAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
  // Description:
  // This method sets the size of the neighborhood.  It also sets the default
  // middle of the neighborhood and computes the Elliptical foot print.
  void SetKernelSize(int size0, int size1, int size2);
protected:
  vtkImageVariance3D();
  ~vtkImageVariance3D();
  vtkImageEllipsoidSource *Ellipse;
  virtual int RequestInformation (vtkInformation *request,
                                  vtkInformationVector **inputVector,
                                  vtkInformationVector *outputVector);
  void ThreadedRequestData(vtkInformation *request,
                           vtkInformationVector **inputVector,
                           vtkInformationVector *outputVector,
                           vtkImageData ***inData, vtkImageData **outData,
                           int extent[6], int id);
  virtual int RequestData(vtkInformation *request,
                          vtkInformationVector **inputVector,
                          vtkInformationVector *outputVector);
private:
  vtkImageVariance3D(const vtkImageVariance3D&);  // Not implemented.
  void operator=(const vtkImageVariance3D&);  // Not implemented.
};
#endif
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