CSJ2K.j2k.wavelet.synthesis.SubbandSyn

SubbandSyn Class

This class represents a subband in a tree structure that describes the subband decomposition for a wavelet transform, specifically for the syhthesis side.

       <p>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.</p>

       <p>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.</p>

Inheritance

object

Subband

SubbandSyn

Namespace: CSJ2K.j2k.wavelet.synthesis

Assembly: C1.C1Pdf.4.8.dll

Syntax

public class SubbandSyn : Subband

Constructors

Name Description

Name	Description
SubbandSyn()	Creates a SubbandSyn element with all the default values. The dimensions are (0,0) and the upper left corner is (0,0).
SubbandSyn(int, int, int, int, int, WaveletFilter[], WaveletFilter[])	Creates the top-level node and the entire subband tree, with the top-level dimensions, the number of decompositions, and the decomposition tree as specified. `<p>This constructor just calls the same constructor of the super class.</p>`

SubbandSyn()

Creates a SubbandSyn element with all the default values. The dimensions are (0,0) and the upper left corner is (0,0).

SubbandSyn(int, int, int, int, int, WaveletFilter[], WaveletFilter[])

Creates the top-level node and the entire subband tree, with the top-level dimensions, the number of decompositions, and the decomposition tree as specified.

       <p>This constructor just calls the same constructor of the super
       class.</p>

Fields

Name	Description
hFilter	The horizontal analysis filter used to recompose this subband, from its childs. This is applicable to "node" elements only. The default value is null.
magbits	The number of magnitude bits
vFilter	The vertical analysis filter used to decompose this subband, from its childs. This is applicable to "node" elements only. The default value is null.

Properties

Name	Description
HH	Returns the HH child subband of this subband.
HL	Returns the HL (horizontal high-pass) child subband of this subband.
HorWFilter	This function returns the horizontal wavelet filter relevant to this subband
LH	Returns the LH (vertical high-pass) child subband of this subband.
LL	Returns the LL child subband of this subband.
Parent	Returns the parent of this subband. The parent of a subband is the subband from which this one was obtained by decomposition. The root element has no parent subband (null).
VerWFilter	This function returns the vertical wavelet filter relevant to this subband

Methods

Name Description

Name	Description
split(WaveletFilter, WaveletFilter)	Splits the current subband in its four subbands. It changes the status of this element (from a leaf to a node, and sets the filters), creates the childs and initializes them. An IllegalArgumentException is thrown if this subband is not a leaf. `<p>It uses the initChilds() method to initialize the childs.</p>`

split(WaveletFilter, WaveletFilter)

Splits the current subband in its four subbands. It changes the status of this element (from a leaf to a node, and sets the filters), creates the childs and initializes them. An IllegalArgumentException is thrown if this subband is not a leaf.

       <p>It uses the initChilds() method to initialize the childs.</p>