/usr/include/vtk-6.2/vtkImageButterworthLowPass.h is in libvtk6-dev 6.2.0+dfsg1-10build1.
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 71 72 73 74 75 76 77 78 79 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkImageButterworthLowPass.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 vtkImageButterworthLowPass - Frequency domain Low pass.
// .SECTION Description
// This filter only works on an image after it has been converted to
// frequency domain by a vtkImageFFT filter. A vtkImageRFFT filter
// can be used to convert the output back into the spatial domain.
// vtkImageButterworthLowPass the high frequency components are
// attenuated. Input and output are in doubles, with two components
// (complex numbers).
// out(i, j) = (1 + pow(CutOff/Freq(i,j), 2*Order));
// .SECTION See Also
// vtkImageButterworthHighPass vtkImageFFT vtkImageRFFT
#ifndef vtkImageButterworthLowPass_h
#define vtkImageButterworthLowPass_h
#include "vtkImagingFourierModule.h" // For export macro
#include "vtkThreadedImageAlgorithm.h"
class VTKIMAGINGFOURIER_EXPORT vtkImageButterworthLowPass : public vtkThreadedImageAlgorithm
{
public:
static vtkImageButterworthLowPass *New();
vtkTypeMacro(vtkImageButterworthLowPass,vtkThreadedImageAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set/Get the cutoff frequency for each axis.
// The values are specified in the order X, Y, Z, Time.
// Units: Cycles per world unit (as defined by the data spacing).
vtkSetVector3Macro(CutOff,double);
void SetCutOff(double v) {this->SetCutOff(v, v, v);}
void SetXCutOff(double v);
void SetYCutOff(double v);
void SetZCutOff(double v);
vtkGetVector3Macro(CutOff,double);
double GetXCutOff() {return this->CutOff[0];}
double GetYCutOff() {return this->CutOff[1];}
double GetZCutOff() {return this->CutOff[2];}
// Description:
// The order determines sharpness of the cutoff curve.
vtkSetMacro(Order, int);
vtkGetMacro(Order, int);
protected:
vtkImageButterworthLowPass();
~vtkImageButterworthLowPass() {}
int Order;
double CutOff[3];
void ThreadedRequestData( vtkInformation *request,
vtkInformationVector **inputVector,
vtkInformationVector *outputVector,
vtkImageData ***inData, vtkImageData **outData,
int outExt[6], int id);
private:
vtkImageButterworthLowPass(const vtkImageButterworthLowPass&); // Not implemented.
void operator=(const vtkImageButterworthLowPass&); // Not implemented.
};
#endif
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