public class SubbandAn extends Subband
The element can be either a node or a leaf of the tree. If it is a node then ther are 4 descendants (LL, HL, LH and HH). If it is a leaf there are no descendants.
The tree is bidirectional. Each element in the tree structure has a "parent", which is the subband from which the element was obtained by decomposition. The only exception is the root element which has no parent (i.e.it's null), for obvious reasons.
Modifier and Type  Field and Description 

AnWTFilter 
hFilter
The horizontal analysis filter used to decompose this
subband.

float 
l2Norm
The L2norm of the synthesis basis waveform of this subband,
applicable to "leafs" only.

SubbandAn 
parent
The reference to the parent of this subband.

float 
stepWMSE
The contribution to the MSE or WMSE error that would result in the
image if there was an error of exactly one quantization step size in
the sample of the subband.

SubbandAn 
subb_HH
The reference to the HH subband resulting from the
decomposition of this subband.

SubbandAn 
subb_HL
The reference to the HL subband (horizontal highpass)
resulting from the decomposition of this subband.

SubbandAn 
subb_LH
The reference to the LH subband (vertical highpass) resulting
from the decomposition of this subband.

SubbandAn 
subb_LL
The reference to the LL subband resulting from the
decomposition of this subband.

AnWTFilter 
vFilter
The vertical analysis filter used to decompose this
subband.

anGainExp, h, isNode, level, nomCBlkH, nomCBlkW, numCb, orientation, resLvl, sbandIdx, ulcx, ulcy, ulx, uly, w, WT_ORIENT_HH, WT_ORIENT_HL, WT_ORIENT_LH, WT_ORIENT_LL
Constructor and Description 

SubbandAn()
Creates a SubbandAn element with all the default values.

SubbandAn(int w,
int h,
int ulcx,
int ulcy,
int lvls,
WaveletFilter[] hfilters,
WaveletFilter[] vfilters)
Creates the toplevel node and the entire subband tree, with
the toplevel dimensions, the number of decompositions, and the
decomposition tree as specified.

Modifier and Type  Method and Description 

private void 
assignL2Norm(float l2n)
Assigns the given L2norm to the first leaf that does not have
an L2norm value yet (i.e.

private void 
calcBasisWaveForms(float[][] wfs)
Calculates the basis waveform of the first leaf for which the
L2norm has not been calculated yet.

private void 
calcL2Norms()
Calculates the L2norm of the sythesis waveforms of every leaf
in the tree.

Subband 
getHH()
Returns the HH child subband of this subband.

Subband 
getHL()
Returns the HL (horizontal highpass) child subband of this
subband.

WaveletFilter 
getHorWFilter()
This function returns the horizontal wavelet filter relevant to this
subband

Subband 
getLH()
Returns the LH (vertical highpass) child subband of this
subband.

Subband 
getLL()
Returns the LL child subband of this subband.

Subband 
getParent()
Returns the parent of this subband.

WaveletFilter 
getVerWFilter()
This function returns the vertical wavelet filter relevant to this
subband

protected Subband 
split(WaveletFilter hfilter,
WaveletFilter vfilter)
Splits the current subband in its four subbands.

getNextResLevel, getSubband, getSubbandByIdx, initChilds, nextSubband, toString
public SubbandAn parent
public SubbandAn subb_LL
public SubbandAn subb_HL
public SubbandAn subb_LH
public SubbandAn subb_HH
public AnWTFilter hFilter
public AnWTFilter vFilter
public float l2Norm
public float stepWMSE
Quantizer
public SubbandAn()
public SubbandAn(int w, int h, int ulcx, int ulcy, int lvls, WaveletFilter[] hfilters, WaveletFilter[] vfilters)
This constructor just calls the same constructor of the super class, and then calculates the L2norm (or energy weight) of each leaf.
This constructor does not initialize the value of the magBits or stepWMSE member variables. This variables are normally initialized by the quantizer (see Quantizer).
w
 The toplevel widthh
 The toplevel heightulcx
 The horizontal coordinate of the upperleft corner with
respect to the canvas origin, in the component grid.ulcy
 The vertical coordinate of the upperleft corner with
respect to the canvas origin, in the component grid.lvls
 The number of levels (or LL decompositions) in the
tree.hfilters
 The horizontal wavelet analysis filters for each
resolution level, starting at resolution level 0.vfilters
 The vertical wavelet analysis filters for each
resolution level, starting at resolution level 0.Subband.Subband(int,int,int,int,int,
WaveletFilter[],WaveletFilter[])
,
Quantizer
public Subband getParent()
public Subband getLL()
public Subband getHL()
public Subband getLH()
public Subband getHH()
protected Subband split(WaveletFilter hfilter, WaveletFilter vfilter)
It uses the initChilds() method to initialize the childs.
split
in class Subband
hfilter
 The horizontal wavelet filter used to decompose
this subband. It has to be a AnWTFilter object.vfilter
 The vertical wavelet filter used to decompose this
subband. It has to be a AnWTFilter object.Subband.initChilds()
private void calcBasisWaveForms(float[][] wfs)
The wfs argument should be a size 2 array of float arrays (i.e. 2D array) and it must be of length 2 (or more). When returning, wfs[0] will contain the line waveform, and wfs[1] will contain the column waveform.
This method can not be called on an element that ahs a nonnegative value in l2Norm, since that means that we are done.
wfs
 An size 2 array where the line and column waveforms
will be returned.private void assignL2Norm(float l2n)
This method can not be called on an element that ahs a nonnegative value in l2Norm, since that means that we are done.
l2n
 The L2norm to assign.private void calcL2Norms()
public WaveletFilter getHorWFilter()
getHorWFilter
in class Subband
public WaveletFilter getVerWFilter()
getVerWFilter
in class Subband
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