Dirac - A Video Codec

Created by the British Broadcasting Corporation.


dirac::WaveletTransform Class Reference

A class to do wavelet transforms. More...

#include <wavelet_utils.h>

Collaboration diagram for dirac::WaveletTransform:

Collaboration graph
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List of all members.

Public Member Functions

Private Member Functions

Private Attributes

Classes


Detailed Description

A class to do forward and backward wavelet transforms by iteratively splitting or merging the lowest frequency band.


Constructor & Destructor Documentation

dirac::WaveletTransform::WaveletTransform int  d = 4,
WltFilter  f = DAUB97
 

virtual dirac::WaveletTransform::~WaveletTransform  )  [virtual]
 

dirac::WaveletTransform::WaveletTransform const WaveletTransform cpy  )  [private]
 


Member Function Documentation

const SubbandList& dirac::WaveletTransform::BandList  )  const [inline]
 

SubbandList& dirac::WaveletTransform::BandList  )  [inline]
 

ValueType dirac::WaveletTransform::GetMeanDCVal  )  const
 

WaveletTransform& dirac::WaveletTransform::operator= const WaveletTransform rhs  )  [private]
 

float dirac::WaveletTransform::PerceptualWeight float  xf,
float  yf,
CompSort  cs
[private]
 

void dirac::WaveletTransform::SetBandWeights const float  cpd,
const FrameSort fsort,
const ChromaFormat cformat,
const CompSort  csort
 

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.

Parameters:
cpd perctual factor - the number of cycles per degree
fsort the frame sort (I, L1 or L2)
cformat the chroma format
csort the component type (Y, U or V)

void dirac::WaveletTransform::Transform const Direction  d,
PicArray pic_data
 

Transforms the data to and from the wavelet domain.

Parameters:
d the direction of the transform
pic_data the data to be transformed


Member Data Documentation

SubbandList dirac::WaveletTransform::m_band_list [private]
 

int dirac::WaveletTransform::m_depth [private]
 

WltFilter dirac::WaveletTransform::m_filt_sort [private]
 

VHFilter* dirac::WaveletTransform::m_vhfilter [private]
 


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

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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