In This Topic
The following tables list the members exposed by ForwWT.
Public Properties
Public Methods
| Name | Description |
| getAnSubbandTree | Returns a reference to the root of subband tree structure representing the subband decomposition for the specified tile-component. (Inherited from CSJ2K.j2k.wavelet.analysis.ForwWTDataProps) |
| getCompImgHeight | Returns the height in pixels of the specified component in the overall image. (Inherited from CSJ2K.j2k.image.ImgData) |
| getCompImgWidth | Returns the width in pixels of the specified component in the overall image. (Inherited from CSJ2K.j2k.image.ImgData) |
| getCompSubsX | Returns the component subsampling factor in the horizontal direction, for the specified component. This is, approximately, the ratio of dimensions between the reference grid and the component itself, see the 'ImgData' interface desription for details. (Inherited from CSJ2K.j2k.image.ImgData) |
| getCompSubsY | Returns the component subsampling factor in the vertical direction, for the specified component. This is, approximately, the ratio of dimensions between the reference grid and the component itself, see the 'ImgData' interface desription for details. (Inherited from CSJ2K.j2k.image.ImgData) |
| getCompULX | Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile. (Inherited from CSJ2K.j2k.image.ImgData) |
| getCompULY | Returns the vertical coordinate of the upper-left corner of the specified component in the current tile. (Inherited from CSJ2K.j2k.image.ImgData) |
| getDecomp | Returns the wavelet tree decomposition. Only WT_DECOMP_DYADIC is supported by JPEG 2000 part I. |
| getDecompLevels | 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 | 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.
The returned filters are applicable only to the specified component and in the current tile.
The resolution level of a subband is the resolution level to which a subband contributes, which is different from its decomposition level. |
| getImplementationType | Returns the implementation type of this wavelet transform (WT_IMPL_LINE or WT_IMPL_FRAME) for the specified component, in the current tile. (Inherited from CSJ2K.j2k.wavelet.WaveletTransform) |
| getNomRangeBits | (Inherited from CSJ2K.j2k.image.ImgData) |
| getNumTiles | Returns the number of tiles in the horizontal and vertical directions. (Inherited from CSJ2K.j2k.image.ImgData) |
| getTile | Returns the indixes of the current tile. These are the horizontal and vertical indexes of the current tile. (Inherited from CSJ2K.j2k.image.ImgData) |
| getTileCompHeight | Returns the height in pixels of the specified tile-component. (Inherited from CSJ2K.j2k.image.ImgData) |
| getTileCompWidth | Returns the width in pixels of the specified tile-component (Inherited from CSJ2K.j2k.image.ImgData) |
| getVertAnWaveletFilters | 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.
The returned filters are applicable only to the specified component and in the current tile.
The resolution level of a subband is the resolution level to which a subband contributes, which is different from its decomposition level. |
| isReversible | Returns the reversibility of the wavelet transform for the specified component and tile. A wavelet transform is reversible when it is suitable for lossless and lossy-to-lossless compression. (Inherited from CSJ2K.j2k.wavelet.WaveletTransform) |
| nextTile | Advances to the next tile, in standard scan-line order (by rows then columns). An NoNextElementException is thrown if the current tile is the last one (i.e. there is no next tile). (Inherited from CSJ2K.j2k.image.ImgData) |
| setTile | Changes the current tile, given the new indices. An IllegalArgumentException is thrown if the coordinates do not correspond to a valid tile. (Inherited from CSJ2K.j2k.image.ImgData) |
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