pcl::InPlaceFourierTransform Class Reference

In-place discrete Fourier transform of two-dimensional complex images. More...

#include <FourierTransform.h>

Inheritance diagram for pcl::InPlaceFourierTransform:

Public Types
using	transform_type = FFTDirection::value_type

Public Member Functions
	InPlaceFourierTransform (const InPlaceFourierTransform &)=default
	InPlaceFourierTransform (transform_type type=FFTDirection::Forward)
	~InPlaceFourierTransform () override
transform_type	Type () const
Public Member Functions inherited from pcl::ImageTransformation
	ImageTransformation ()=default
	ImageTransformation (const ImageTransformation &)=default
virtual	~ImageTransformation ()
template<class P >
GenericImage< P > &	operator>> (GenericImage< P > &image) const
ImageVariant &	operator>> (ImageVariant &image) const
Public Member Functions inherited from pcl::ParallelProcess
	ParallelProcess ()=default
	ParallelProcess (const ParallelProcess &)=default
virtual	~ParallelProcess ()
void	DisableParallelProcessing (bool disable=true) noexcept
void	EnableParallelProcessing (bool enable=true, int maxProcessors=0) noexcept
bool	IsParallelProcessingEnabled () const noexcept
int	MaxProcessors () const noexcept
ParallelProcess &	operator= (const ParallelProcess &)=default
void	SetMaxProcessors (int maxProcessors) noexcept
void	Swap (ParallelProcess &process) noexcept

Protected Member Functions
void	Apply (pcl::ComplexImage &) const override
void	Apply (pcl::DComplexImage &) const override
Protected Member Functions inherited from pcl::ImageTransformation
virtual void	Apply (pcl::DImage &image) const
virtual void	Apply (pcl::Image &image) const
virtual void	Apply (pcl::UInt16Image &image) const
virtual void	Apply (pcl::UInt32Image &image) const
virtual void	Apply (pcl::UInt8Image &image) const

Detailed Description

InPlaceFourierTransform performs in-place, discrete Fourier transforms of complex-sampled two-dimensional images using fast Fourier transform algorithms.

InPlaceFourierTransform can only be applied to 32-bit and 64-bit floating point complex images: either ComplexImage or DComplexImage.

Note

Important - For performance reasons, InPlaceFourierTransform can change the dimensions of a transformed image (width and/or height in pixels) to their nearest optimized FFT lengths. This may involve reallocation of pixel data. If the transformed image already has optimized dimensions, no size change or reallocation occurs. See the GenericFFT::GenericFFT( int ) constructor for details on optimized FFT lengths.

See also

FourierTransform

Definition at line 110 of file FourierTransform.h.

Member Typedef Documentation

transform_type

using pcl::InPlaceFourierTransform::transform_type = FFTDirection::value_type

Represents a FFT direction and type.

Definition at line 117 of file FourierTransform.h.

Constructor & Destructor Documentation

InPlaceFourierTransform() [1/2]

pcl::InPlaceFourierTransform::InPlaceFourierTransform ( transform_type  type = FFTDirection::Forward )

inline

Constructs an InPlaceFourierTransform instance.

Parameters

type	Transform direction and type. This parameter can have one of the following values: FFTDirection::Forward Fourier transform. This is the default value. FFTDirection::Backward Inverse Fourier transform

Definition at line 132 of file FourierTransform.h.

InPlaceFourierTransform() [2/2]

pcl::InPlaceFourierTransform::InPlaceFourierTransform ( const InPlaceFourierTransform &  )

default

Copy constructor.

~InPlaceFourierTransform()

pcl::InPlaceFourierTransform::~InPlaceFourierTransform ( )

inlineoverride

Destroys an InPlaceFourierTransform object.

Definition at line 145 of file FourierTransform.h.

Member Function Documentation

Apply() [1/2]

void pcl::InPlaceFourierTransform::Apply ( pcl::ComplexImage &  image ) const

overrideprotectedvirtual

Applies this transformation to a 32-bit complex image.

Reimplemented from pcl::ImageTransformation.

Apply() [2/2]

void pcl::InPlaceFourierTransform::Apply ( pcl::DComplexImage &  image ) const

overrideprotectedvirtual

Applies this transformation to a 64-bit complex image.

Reimplemented from pcl::ImageTransformation.

Type()

transform_type pcl::InPlaceFourierTransform::Type ( ) const

inline

Returns the type and direction of this Fourier transform. See the FFTDirection namespace for possible values.

Definition at line 153 of file FourierTransform.h.

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

• FourierTransform.h