# CSJ2K.j2k.wavelet.Subband.-ctor ## Content

Subband Constructor

Subband()

Creates a Subband element with all the default values. The dimensions are (0,0), the upper left corner is (0,0) and the upper-left corner with respect to the canvas is (0,0) too.

Declaration
public Subband()
Public Sub New()

Subband(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>For the analysis subband gain calculation it is assumed that
       analysis filters are normalized with a DC gain of 1 and a Nyquist gain
       of 2.</p><p>This constructor does not initialize the value of the magBits member
       variable. This variable is normally initialized by the quantizer, on
       the encoder side, or the bit stream reader, on the decoder side.</p>
Declaration
public Subband(int w, int h, int ulcx, int ulcy, int lvls, WaveletFilter[] hfilters, WaveletFilter[] vfilters)
Public Sub New(w As Integer, h As Integer, ulcx As Integer, ulcy As Integer, lvls As Integer, hfilters As WaveletFilter(), vfilters As WaveletFilter())
Parameters
Type Name Description
int w

The top-level width
int h

The top-level height
int ulcx

The horizontal coordinate of the upper-left corner with respect to the canvas origin, in the component grid.
int ulcy

The vertical coordinate of the upper-left corner with respect to the canvas origin, in the component grid.
int lvls

The number of levels (or LL decompositions) in the tree.
WaveletFilter[] hfilters

The horizontal wavelet filters (analysis or synthesis) for each resolution level, starting at resolution level 0. If there are less elements in the array than there are resolution levels, the last element is used for the remaining resolution levels.
WaveletFilter[] vfilters

The vertical wavelet filters (analysis or synthesis) for each resolution level, starting at resolution level 0. If there are less elements in the array than there are resolution levels, the last element is used for the remaining resolution levels.
See Also
WaveletTransform