| java.lang.Object
 jj2000.j2k.wavelet.Subband
jj2000.j2k.wavelet.synthesis.SubbandSyn
| SubbandSyn | | public class SubbandSyn extends Subband (Code) | | This class represents a subband in a tree structure that describes
the subband decomposition for a wavelet transform, specifically for
the syhthesis side.
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.
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| Field Summary | |
| public SynWTFilter | hFilter
The horizontal analysis filter used to recompose this subband,
from its childs. | | public int | magbits
| | public SubbandSyn | parent
The reference to the parent of this subband. | | public SubbandSyn | subb_HH
The reference to the HH subband resulting from the
decomposition of this subband. | | public SubbandSyn | subb_HL
The reference to the HL subband (horizontal high-pass)
resulting from the decomposition of this subband. | | public SubbandSyn | subb_LH
The reference to the LH subband (vertical high-pass) resulting
from the decomposition of this subband. | | public SubbandSyn | subb_LL
The reference to the LL subband resulting from the
decomposition of this subband. | | public SynWTFilter | vFilter
The vertical analysis filter used to decompose this subband,
from its childs. |
| Constructor Summary | |
| public | SubbandSyn()
Creates a SubbandSyn element with all the default values. | | public | SubbandSyn(int w, int h, int ulcx, int ulcy, int lvls, WaveletFilter hfilters, WaveletFilter vfilters)
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. |
| hFilter | | public SynWTFilter hFilter(Code) | | The horizontal analysis filter used to recompose this subband,
from its childs. This is applicable to "node" elements
only. The default value is null.
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| magbits | | public int magbits(Code) | | The number of magnitude bits
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| parent | | public SubbandSyn parent(Code) | | The reference to the parent of this subband. It is null for the
root element. It is null by default.
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| subb_HH | | public SubbandSyn subb_HH(Code) | | The reference to the HH subband resulting from the
decomposition of this subband. It is null by default.
|
| subb_HL | | public SubbandSyn subb_HL(Code) | | The reference to the HL subband (horizontal high-pass)
resulting from the decomposition of this subband. It is null by
default.
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| subb_LH | | public SubbandSyn subb_LH(Code) | | The reference to the LH subband (vertical high-pass) resulting
from the decomposition of this subband. It is null by default.
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| subb_LL | | public SubbandSyn subb_LL(Code) | | The reference to the LL subband resulting from the
decomposition of this subband. It is null by default.
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| vFilter | | public SynWTFilter vFilter(Code) | | The vertical analysis filter used to decompose this subband,
from its childs. This is applicable to "node" elements
only. The default value is null.
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| SubbandSyn | | public SubbandSyn()(Code) | | Creates a SubbandSyn element with all the default values. The
dimensions are (0,0) and the upper left corner is (0,0).
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| SubbandSyn | | public SubbandSyn(int w, int h, int ulcx, int ulcy, int lvls, WaveletFilter hfilters, WaveletFilter vfilters)(Code) | | 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.
This constructor just calls the same constructor of the
super class.
Parameters:
w - The top-level width
Parameters:
h - The top-level height
Parameters:
ulcx - The horizontal coordinate of the upper-left corner withrespect to the canvas origin, in the component grid.
Parameters:
ulcy - The vertical coordinate of the upper-left corner withrespect to the canvas origin, in the component grid.
Parameters:
lvls - The number of levels (or LL decompositions) in thetree.
Parameters:
hfilters - The horizontal wavelet synthesis filters for eachresolution level, starting at resolution level 0.
Parameters:
vfilters - The vertical wavelet synthesis filters for eachresolution level, starting at resolution level 0.
See Also: Subband.Subband(intintintintintWaveletFilter[]WaveletFilter[]) |
| getHH | | public Subband getHH()(Code) | | Returns the HH child subband of this subband.
The HH child subband, or null if there are no childs. |
| getHL | | public Subband getHL()(Code) | | Returns the HL (horizontal high-pass) child subband of this
subband.
The HL child subband, or null if there are no childs. |
| getHorWFilter | | public WaveletFilter getHorWFilter()(Code) | | This function returns the horizontal wavelet filter relevant to this
subband
The horizontal wavelet filter |
| getLH | | public Subband getLH()(Code) | | Returns the LH (vertical high-pass) child subband of this
subband.
The LH child subband, or null if there are no childs. |
| getLL | | public Subband getLL()(Code) | | Returns the LL child subband of this subband.
The LL child subband, or null if there are no childs. |
| getParent | | public Subband getParent()(Code) | | 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).
The parent subband, or null for the root one. |
| getVerWFilter | | public WaveletFilter getVerWFilter()(Code) | | This function returns the vertical wavelet filter relevant to this
subband
The vertical wavelet filter |
| split | | protected Subband split(WaveletFilter hfilter, WaveletFilter vfilter)(Code) | | 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.
It uses the initChilds() method to initialize the childs.
Parameters:
hfilter - The horizontal wavelet filter used to decomposethis subband. It has to be a SynWTFilter object.
Parameters:
vfilter - The vertical wavelet filter used to decompose thissubband. It has to be a SynWTFilter object. A reference to the LL leaf (subb_LL).
See Also: Subband.initChilds |
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