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vnl_fft_1d< T > Struct Template Reference

#include <vnl_fft_1d.h>

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List of all members.

Public Types

typedef vnl_fft_base< 1, T > base

Public Methods

 vnl_fft_1d (int N)
void transform (vnl_vector< vcl_complex< T > > &signal, int dir)
void fwd_transform (vnl_vector< vcl_complex< T > > &signal)
void bwd_transform (vnl_vector< vcl_complex< T > > &signal)
unsigned size () const

Detailed Description

template<class T>
struct vnl_fft_1d< T >

In-place 1D fast fourier transform.

Definition at line 14 of file vnl_fft_1d.h.


Member Typedef Documentation

template<class T>
typedef vnl_fft_base<1, T> vnl_fft_1d< T >::base
 

Definition at line 16 of file vnl_fft_1d.h.


Constructor & Destructor Documentation

template<class T>
vnl_fft_1d< T >::vnl_fft_1d int    N [inline]
 

constructor takes length of signal.

Definition at line 20 of file vnl_fft_1d.h.


Member Function Documentation

template<class T>
void vnl_fft_1d< T >::bwd_transform vnl_vector< vcl_complex< T > > &    signal [inline]
 

backward (inverse) FFT.

Definition at line 37 of file vnl_fft_1d.h.

template<class T>
void vnl_fft_1d< T >::fwd_transform vnl_vector< vcl_complex< T > > &    signal [inline]
 

forward FFT.

Definition at line 32 of file vnl_fft_1d.h.

References vnl_fft_1d< T >::transform().

template<class T>
unsigned vnl_fft_1d< T >::size void    const [inline]
 

return length of signal.

Definition at line 42 of file vnl_fft_1d.h.

template<class T>
void vnl_fft_1d< T >::transform vnl_vector< vcl_complex< T > > &    signal,
int    dir
[inline]
 

dir = +1/-1 according to direction of transform.

Definition at line 27 of file vnl_fft_1d.h.

Referenced by vnl_fft_1d< T >::fwd_transform().


The documentation for this struct was generated from the following file:
Generated at Wed Mar 12 01:13:29 2003 for ITK by doxygen 1.2.15 written by Dimitri van Heesch, © 1997-2000