vnl_fft_1d< T > Struct Template Reference

In-place 1D fast Fourier transform. More...

#include <vnl_fft_1d.h>

Inheritance diagram for vnl_fft_1d< T >:

List of all members.

Public Types
typedef vnl_fft_base< 1, T >	base
Public Member Functions
	vnl_fft_1d (int N)
	constructor takes length of signal.
unsigned int	size () const
	return length of signal.
void	transform (vcl_vector< vcl_complex< T > > &signal, int dir)
	dir = +1/-1 according to direction of transform.
void	transform (vcl_complex< T > *signal, int dir)
	dir = +1/-1 according to direction of transform.
void	transform (vnl_vector< vcl_complex< T > > &signal, int dir)
	dir = +1/-1 according to direction of transform.
void	fwd_transform (vcl_vector< vcl_complex< T > > &signal)
	forward FFT.
void	fwd_transform (vcl_complex< T > *signal)
	forward FFT.
void	fwd_transform (vnl_vector< vcl_complex< T > > &signal)
	forward FFT.
void	bwd_transform (vcl_vector< vcl_complex< T > > &signal)
	backward (inverse) FFT.
void	bwd_transform (vcl_complex< T > *signal)
	backward (inverse) FFT.
void	bwd_transform (vnl_vector< vcl_complex< T > > &signal)
	backward (inverse) FFT.
Protected Attributes
vnl_fft_prime_factors< T >	factors_ [D]
	prime factorizations of signal dimensions.

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Detailed Description

template<class T>
struct vnl_fft_1d< T >

In-place 1D fast Fourier transform.

Definition at line 32 of file vnl_fft_1d.h.

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Member Typedef Documentation

template<class T>

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

Definition at line 34 of file vnl_fft_1d.h.

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Constructor & Destructor Documentation

template<class T>

vnl_fft_1d< T >::vnl_fft_1d

(

int

N

)

[inline]

constructor takes length of signal.

Definition at line 37 of file vnl_fft_1d.h.

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Member Function Documentation

template<class T>

void vnl_fft_1d< T >::bwd_transform

(

vcl_vector< vcl_complex< T > > &

signal

)

[inline]

backward (inverse) FFT.

Definition at line 69 of file vnl_fft_1d.h.

template<class T>

void vnl_fft_1d< T >::bwd_transform

(

vcl_complex< T > *

signal

)

[inline]

backward (inverse) FFT.

Definition at line 73 of file vnl_fft_1d.h.

template<class T>

void vnl_fft_1d< T >::bwd_transform

(

vnl_vector< vcl_complex< T > > &

signal

)

[inline]

backward (inverse) FFT.

Definition at line 77 of file vnl_fft_1d.h.

template<class T>

void vnl_fft_1d< T >::fwd_transform

(

vcl_vector< vcl_complex< T > > &

signal

)

[inline]

forward FFT.

Definition at line 57 of file vnl_fft_1d.h.

template<class T>

void vnl_fft_1d< T >::fwd_transform

(

vcl_complex< T > *

signal

)

[inline]

forward FFT.

Definition at line 61 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 65 of file vnl_fft_1d.h.

template<class T>

unsigned int vnl_fft_1d< T >::size

(

)

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	(	vcl_vector< vcl_complex< T > > &	signal,
		int	dir
	)		[inline]

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

Definition at line 45 of file vnl_fft_1d.h.

template<class T>

void vnl_fft_1d< T >::transform	(	vcl_complex< T > *	signal,
		int	dir
	)		[inline]

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

Reimplemented from vnl_fft_base< 1, T >.

Definition at line 49 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 53 of file vnl_fft_1d.h.

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Member Data Documentation

vnl_fft_prime_factors<T> vnl_fft_base< D, T >::factors_[D] [protected, inherited]

prime factorizations of signal dimensions.

Definition at line 27 of file vnl_fft_base.h.

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The documentation for this struct was generated from the following file:

• core/vnl/algo/vnl_fft_1d.h