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CSJ2K.j2k.wavelet.analysis.ForwWT

ForwWT Interface

This interface extends the WaveletTransform with the specifics of forward wavelet transforms. Classes that implement forward wavelet transfoms should implement this interface.

       <p>This class does not define the methods to transfer data, just the
       specifics to forward wavelet transform. Different data transfer methods are 
       evisageable for different transforms.</p>
Namespace: CSJ2K.j2k.wavelet.analysis
Assembly: C1.WPF.PdfViewer.4.6.2.dll
Syntax
public interface ForwWT : WaveletTransform, ForwWTDataProps, ImgData

Methods

Name Description
getDecomp(int, int)

Returns the wavelet tree decomposition. Only WT_DECOMP_DYADIC is supported by JPEG 2000 part I.

getDecompLevels(int, int)

Returns the number of decomposition levels that are applied to obtain the LL band, in the specified tile-component. A value of 0 means that no wavelet transform is applied.

getHorAnWaveletFilters(int, int)

Returns the horizontal analysis wavelet filters used in each level, for the specified tile-component. The first element in the array is the filter used to obtain the lowest resolution (resolution level 0) subbands (i.e. lowest frequency LL subband), the second element is the one used to generate the resolution level 1 subbands, and so on. If there are less elements in the array than the number of resolution levels, then the last one is assumed to repeat itself.

       <p>The returned filters are applicable only to the specified component
       and in the current tile.</p><p>The resolution level of a subband is the resolution level to which a
       subband contributes, which is different from its decomposition
       level.</p>
getVertAnWaveletFilters(int, int)

Returns the vertical analysis wavelet filters used in each level, for the specified tile-component. The first element in the array is the filter used to obtain the lowest resolution (resolution level 0) subbands (i.e. lowest frequency LL subband), the second element is the one used to generate the resolution level 1 subbands, and so on. If there are less elements in the array than the number of resolution levels, then the last one is assumed to repeat itself.

       <p>The returned filters are applicable only to the specified component
       and in the current tile.</p><p>The resolution level of a subband is the resolution level to which a
       subband contributes, which is different from its decomposition
       level.</p>