Functions to apply the FFT to an image. More...

#include <complex>
#include <vector>
#include "vil_fft.h"
#include <vil/vil_image_view.h>
#include <vnl/algo/vnl_fft_1d.h>

Macros
#define	VIL_FFT_INSTANTIATE(T)

Functions
template<class T >
void	vil_fft_2d_fwd (vil_image_view< std::complex< T > > &img)
	Perform in place forward FFT. More...

template<class T >
void	vil_fft_2d_bwd (vil_image_view< std::complex< T > > &img)
	Perform in place backward FFT. More...

Detailed Description

Functions to apply the FFT to an image.

Author: Fred Wheeler

Definition in file vil_fft.hxx.

Macro Definition Documentation

◆ VIL_FFT_INSTANTIATE

#define VIL_FFT_INSTANTIATE ( T )

Value:

template void vil_fft_2d_base(std::complex<T >* data, \
                              unsigned n0, std::ptrdiff_t step0, \
                              unsigned n1, std::ptrdiff_t step1, \
                              unsigned n2, std::ptrdiff_t step2, \
                              int dir); \
template void vil_fft_2d_fwd(vil_image_view<std::complex<T > >& img); \
template void vil_fft_2d_bwd(vil_image_view<std::complex<T > >& img)

Definition at line 94 of file vil_fft.hxx.

Function Documentation

◆ vil_fft_2d_bwd()

template<class T >

void vil_fft_2d_bwd ( vil_image_view< std::complex< T > > & img )

Perform in place backward FFT.

Unlike vnl_fft_2d, scaling is done properly, so using vil_fft_2d_fwd(), then vil_fft_2d_bwd() gets back the original image.

Definition at line 79 of file vil_fft.hxx.

◆ vil_fft_2d_fwd()

template<class T >

void vil_fft_2d_fwd ( vil_image_view< std::complex< T > > & img )

Perform in place forward FFT.

Definition at line 63 of file vil_fft.hxx.