Computes orthogonal redundant (i.e., non-subsampled) wavelet decomposition / reconstruction This class implements the a-trous algorithm of Mallat. More...

#include <NonSubsampledTransform.h>

Inheritance diagram for stira::wavelet::NonSubsampledTransform:

Public Member Functions
	NonSubsampledTransform (WaveletType type=DAUBECHIES_2)
	constructor More...

	~NonSubsampledTransform ()
	destructor

virtual bool	Decompose (ArrayGrid< double > *pSourceGrid, int nrScales)
	decomposition More...

virtual bool	Reconstruct (double threshold=0.0)
	reconstructs the decomposed image More...

Public Member Functions inherited from stira::wavelet::Wavelet
	Wavelet ()
	constructor

virtual	~Wavelet ()
	destructor

Pyramid< double > *	GetPyramid ()
	Gets the pyramid with all the subbands.

ArrayGrid< double > *	GetCopyOfReconstructedGrid ()
	gets a copy of the grid after wavelket reconstruction Caller gets responsability to delete it after usage

int	GetNumberOfOrientations ()
	gets the number of orientations

int	GetNumberOfScales ()
	gets the number of scales

Additional Inherited Members
Protected Member Functions inherited from stira::wavelet::Wavelet
void	Initialize (ArrayGrid< double > *pSourceGrid, int nrScales, int nrOrientations=3, bool createBands=false, bool isSubsampled=true, bool isLowestScaleSubsampled=true)
	Initializes data structures and variables for decomposition. More...

Protected Attributes inherited from stira::wavelet::Wavelet
int	mNrOrientations
	Number of orientations; default 3 with classical wavelets (LH, HL and HH)

int	mNrScales
	Number of scales.

Pyramid< double > *	mpPyramid
	data structure for decomposed bands with wavelet coefficients

ArrayGrid< double > *	mpDecomposeReconstructGrid
	grid after deompose/reconstruct

int	mCurrentScale
	number of the scale being computed

WaveletFilterSet	mSet
	the wavelet filter taps

ArrayGrid< double > *	mpSourceGrid
	pointer to source data before decomposition

Detailed Description

Computes orthogonal redundant (i.e., non-subsampled) wavelet decomposition / reconstruction This class implements the a-trous algorithm of Mallat.

Constructor & Destructor Documentation

stira::wavelet::NonSubsampledTransform::NonSubsampledTransform ( WaveletType type = DAUBECHIES_2 )

constructor

Parameters

type	type of wavelet to use (see enum in waveletTabs.h)

References stira::wavelet::WaveletTapGenerator::Generate(), stira::wavelet::WaveletFilterSet::length, stira::wavelet::Wavelet::mNrOrientations, stira::wavelet::Wavelet::mSet, stira::wavelet::WaveletFilterSet::pHighpassForward, stira::wavelet::WaveletFilterSet::pHighpassInvers, stira::wavelet::WaveletFilterSet::pLowpassForward, and stira::wavelet::WaveletFilterSet::pLowpassInvers.

Member Function Documentation

bool stira::wavelet::NonSubsampledTransform::Decompose	(	ArrayGrid< double > *	pSourceGrid,
		int	nrScales
	)

virtual

decomposition

Parameters

pSourceGrid	grid to be deomposed
nrScales	nr of scales in the decomposition

Returns: true if all went well

Implements stira::wavelet::Wavelet.

References stira::imagedata::Pyramid< T >::GetLowpassResidual(), stira::wavelet::Wavelet::GetNumberOfScales(), stira::wavelet::Wavelet::Initialize(), stira::wavelet::Wavelet::mNrOrientations, stira::wavelet::Wavelet::mNrScales, and stira::wavelet::Wavelet::mpPyramid.

bool stira::wavelet::NonSubsampledTransform::Reconstruct ( double threshold = 0.0 )

virtual

reconstructs the decomposed image

Parameters

threshold hard threshold for bandpass images, just for demo purposes

Implements stira::wavelet::Wavelet.

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

wavelet/wavelet/NonSubsampledTransform.h
wavelet/wavelet/NonSubsampledTransform.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation