dirac::CoeffArray Class Reference

A class for wavelet coefficient data. More...

#include <wavelet_utils.h>

Inheritance diagram for dirac::CoeffArray:

Collaboration diagram for dirac::CoeffArray:

Public Member Functions
	CoeffArray ()
	Default constructor.
	CoeffArray (int height, int width, CompSort cs=Y_COMP)
	Constructor.
	~CoeffArray ()
	Destructor.
const CompSort &	CSort () const
	Return which component is stored.
void	SetCSort (const CompSort cs)
	Set the type of component being stored.
SubbandList &	BandList ()
	Returns the set of subbands.
const SubbandList &	BandList () const
	Returns the set of subbands.
void	SetBandWeights (const EncoderParams &encparams, const PictureParams &pparams, const CompSort csort, const float cpd_scale_factor)
	Sets the subband weights.
Public Member Functions inherited from dirac::TwoDArray< CoeffType >
	TwoDArray ()
	Default constructor.
	TwoDArray (const int height, const int width)
	Constructor.
	TwoDArray (const int height, const int width, CoeffType val)
	Constructor.
	TwoDArray (const TwoDArray< CoeffType > &Cpy)
	Copy constructor.
virtual	~TwoDArray ()
	Destructor.
TwoDArray< CoeffType > &	operator= (const TwoDArray< CoeffType > &rhs)
	Assignment =.
bool	CopyContents (TwoDArray< CoeffType > &out) const
	Copy Contents.
void	Fill (CoeffType val)
	Fill contents.
void	Resize (const int height, const int width)
	Resizes the array, deleting the current data.
element_type &	operator[] (const int pos)
	Element access.
const element_type &	operator[] (const int pos) const
	Element access.
int	LengthX () const
	Returns the width.
int	LengthY () const
	Returns the height.
int	FirstX () const
	Returns the index of the first element of a row.
int	FirstY () const
	Returns the index of the first element of a column.
int	LastX () const
	Returns the index of the last element of a row.
int	LastY () const
	Returns the index of the first element of a column.

Private Member Functions
float	PerceptualWeight (float xf, float yf, CompSort cs)
	Given x and y spatial frequencies in cycles per degree, returns a weighting value.

Private Attributes
CompSort	m_csort
SubbandList	m_band_list

Detailed Description

A class for encapsulating coefficient data, derived from TwoDArray..

Constructor & Destructor Documentation

CoeffArray() [1/2]

dirac::CoeffArray::CoeffArray ( )

inline

Default constructor creates an empty array.

CoeffArray() [2/2]

dirac::CoeffArray::CoeffArray ( int height, int width, CompSort cs = Y_COMP )

inline

Contructor creates a two-D array, with specified size and colour format.

~CoeffArray()

dirac::CoeffArray::~CoeffArray ( )

inline

Member Function Documentation

BandList() [1/2]

SubbandList & dirac::CoeffArray::BandList ( )

inline

References m_band_list.

BandList() [2/2]

const SubbandList & dirac::CoeffArray::BandList ( ) const

inline

References m_band_list.

CSort()

const CompSort & dirac::CoeffArray::CSort ( ) const

inline

References m_csort.

PerceptualWeight()

float dirac::CoeffArray::PerceptualWeight ( float xf, float yf, CompSort cs )

private

SetBandWeights()

void dirac::CoeffArray::SetBandWeights	(	const EncoderParams &	encparams,
		const PictureParams &	pparams,
		const CompSort	csort,
		const float	cpd_scale_factor )

Sets perceptual weights for the subbands. Takes into account both perceptual factors (weight noise less at higher spatial frequencies) and the scaling needed for the wavelet transform.

SetCSort()

void dirac::CoeffArray::SetCSort ( const CompSort cs )

inline

References m_csort.

Member Data Documentation

m_band_list

SubbandList dirac::CoeffArray::m_band_list

private

Referenced by BandList(), and BandList().

m_csort

CompSort dirac::CoeffArray::m_csort

private

Referenced by CSort(), and SetCSort().

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

• wavelet_utils.h