FourierEngine.H File Reference

#include "Image/Image.H"
#include <complex>
#include <fftw3.h>

Include dependency graph for FourierEngine.H:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
class	FourierEngine< T >
	Thin wrapper around the fftw3 library for the discrete fourier transform. More...
class	FourierInvEngine< T >
	Thin wrapper around the fftw3 for computing inverse fourier transforms. More...
Typedefs
typedef std::complex< double >	complexd
typedef std::complex< float >	complexf
Functions
template<class T >
Image< T >	magnitude (const Image< std::complex< T > > &img)
	Complex magnitude.
template<class T >
Image< T >	logmagnitude (const Image< std::complex< T > > &img)
	Logarithm of complex magnitude.
template<class T >
Image< T >	phase (const Image< std::complex< T > > &img)
	Compute the complex phase of the fourier result.
template<class T >
Image< T >	cartesian (const Image< T > &in, const Dims &dims)
	Morph a fourier result image from polar to cartesian coordinates.

---

Detailed Description

Thin wrapper around the fftw3 library

Definition in file FourierEngine.H.

---

Function Documentation

template<class T >

Image<T> cartesian	(	const Image< T > &	in,
		const Dims &	dims
	)			[inline]

Morph a fourier result image from polar to cartesian coordinates.

Definition at line 507 of file FourierEngine.C.

References Image< T >::coordsOk(), Image< T >::getHeight(), Image< T >::getSize(), Image< T >::getWidth(), Dims::h(), sqrt(), Dims::w(), and ZEROS.

template<class T >

Image<T> logmagnitude

(

const Image< std::complex< T > > &

img

)

[inline]

Logarithm of complex magnitude.

Definition at line 466 of file FourierEngine.C.

References abs(), log(), min(), and NO_INIT.

Referenced by SpectralResidualChannel::getOutput().

template<class T >

Image<T> magnitude

(

const Image< std::complex< T > > &

img

)

[inline]

Complex magnitude.

Definition at line 447 of file FourierEngine.C.

References abs(), and NO_INIT.

Referenced by lobot::TTIEstimator::compute_distance(), and PlotBuffer::SimTimeToSI().

template<class T >

Image<T> phase

(

const Image< std::complex< T > > &

img

)

[inline]

Compute the complex phase of the fourier result.

Definition at line 488 of file FourierEngine.C.

References NO_INIT.

Referenced by StereoChannel::buildSubChans(), and SpectralResidualChannel::getOutput().