/usr/include/vtk-7.1/vtkImageRFFT.h is in libvtk7-dev 7.1.1+dfsg1-2.
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 80 81 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkImageRFFT.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.
=========================================================================*/
/**
* @class vtkImageRFFT
* @brief Reverse Fast Fourier Transform.
*
* vtkImageRFFT implements the reverse fast Fourier transform. The input
* can have real or complex data in any components and data types, but
* the output is always complex doubles with real values in component0, and
* imaginary values in component1. The filter is fastest for images that
* have power of two sizes. The filter uses a butterfly fitlers for each
* prime factor of the dimension. This makes images with prime number dimensions
* (i.e. 17x17) much slower to compute. Multi dimensional (i.e volumes)
* FFT's are decomposed so that each axis executes in series.
* In most cases the RFFT will produce an image whose imaginary values are all
* zero's. In this case vtkImageExtractComponents can be used to remove
* this imaginary components leaving only the real image.
*
* @sa
* vtkImageExtractComponenents
*/
#ifndef vtkImageRFFT_h
#define vtkImageRFFT_h
#include "vtkImagingFourierModule.h" // For export macro
#include "vtkImageFourierFilter.h"
class VTKIMAGINGFOURIER_EXPORT vtkImageRFFT : public vtkImageFourierFilter
{
public:
static vtkImageRFFT *New();
vtkTypeMacro(vtkImageRFFT,vtkImageFourierFilter);
protected:
vtkImageRFFT() {}
~vtkImageRFFT() {}
virtual int IterativeRequestInformation(vtkInformation* in,
vtkInformation* out);
virtual int IterativeRequestUpdateExtent(vtkInformation* in,
vtkInformation* out);
virtual void ThreadedRequestData(
vtkInformation* vtkNotUsed( request ),
vtkInformationVector** inputVector,
vtkInformationVector* vtkNotUsed( outputVector ),
vtkImageData ***inDataVec,
vtkImageData **outDataVec,
int outExt[6],
int threadId);
private:
vtkImageRFFT(const vtkImageRFFT&) VTK_DELETE_FUNCTION;
void operator=(const vtkImageRFFT&) VTK_DELETE_FUNCTION;
};
#endif
// VTK-HeaderTest-Exclude: vtkImageRFFT.h
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