|
virtual int | IsA (const char *type) |
|
vtkImageRFFT * | NewInstance () const |
|
|
int | SplitExtent (int splitExt[6], int startExt[6], int num, int total) |
|
vtkImageFourierFilter * | NewInstance () const |
|
void | ExecuteFft (vtkImageComplex *in, vtkImageComplex *out, int N) |
|
void | ExecuteRfft (vtkImageComplex *in, vtkImageComplex *out, int N) |
|
void | SetDimensionality (int dim) |
|
virtual int | GetDimensionality () |
|
void | PermuteIncrements (vtkIdType *increments, vtkIdType &inc0, vtkIdType &inc1, vtkIdType &inc2) |
|
void | PermuteExtent (int *extent, int &min0, int &max0, int &min1, int &max1, int &min2, int &max2) |
|
vtkImageDecomposeFilter * | NewInstance () const |
|
void | PrintSelf (ostream &os, vtkIndent indent) |
|
vtkImageIterateFilter * | NewInstance () const |
|
void | PrintSelf (ostream &os, vtkIndent indent) |
|
virtual int | GetIteration () |
|
virtual int | GetNumberOfIterations () |
|
|
virtual vtkObjectBase * | NewInstanceInternal () const |
|
| 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) |
|
| vtkImageFourierFilter () |
|
| ~vtkImageFourierFilter () |
|
void | ExecuteFftStep2 (vtkImageComplex *p_in, vtkImageComplex *p_out, int N, int bsize, int fb) |
|
void | ExecuteFftStepN (vtkImageComplex *p_in, vtkImageComplex *p_out, int N, int bsize, int n, int fb) |
|
void | ExecuteFftForwardBackward (vtkImageComplex *in, vtkImageComplex *out, int N, int fb) |
|
| vtkImageDecomposeFilter () |
|
| ~vtkImageDecomposeFilter () |
|
| vtkImageIterateFilter () |
|
| ~vtkImageIterateFilter () |
|
virtual int | RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
|
virtual int | RequestInformation (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
|
virtual int | RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) |
|
virtual int | IterativeRequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
|
virtual void | SetNumberOfIterations (int num) |
|
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.
- See Also
- vtkImageExtractComponenents
- Tests:
- vtkImageRFFT (Tests)
Definition at line 44 of file vtkImageRFFT.h.