jj2000.j2k.wavelet.synthesis

Class InverseWT

java.lang.Object

jj2000.j2k.wavelet.synthesis.InvWTAdapter

jj2000.j2k.wavelet.synthesis.InverseWT

All Implemented Interfaces:

BlkImgDataSrc, ImgData, InvWT, WaveletTransform

Direct Known Subclasses:

InvWTFull

public abstract class InverseWT
extends InvWTAdapter
implements BlkImgDataSrc

This abstract class extends the WaveletTransform one with the specifics of inverse wavelet transforms.

The image can be reconstructed at different resolution levels. This is controlled by the setResLevel() method. All the image, tile and component dimensions are relative the the resolution level being used. The number of resolution levels indicates the number of wavelet recompositions that will be used, if it is equal as the number of decomposition levels then the full resolution image is reconstructed.

It is assumed in this class that all tiles and components the same reconstruction resolution level. If that where not the case the implementing class should have additional data structures to store those values for each tile. However, the 'recResLvl' member variable always contain the values applicable to the current tile, since many methods implemented here rely on them.

Field Summary

Fields inherited from class jj2000.j2k.wavelet.synthesis.InvWTAdapter

decSpec, maxImgRes, mressrc, reslvl

Fields inherited from interface jj2000.j2k.wavelet.WaveletTransform

WT_IMPL_FULL, WT_IMPL_LINE

Constructor Summary

Constructors

Constructor and Description
InverseWT(MultiResImgData src, DecoderSpecs decSpec) Initializes this object with the given source of wavelet coefficients.

Method Summary

Methods

Modifier and Type	Method and Description
static InverseWT	createInstance(CBlkWTDataSrcDec src, DecoderSpecs decSpec) Creates an InverseWT object that works on the data type of the source, with the special additional parameters from the parameter list.

Methods inherited from class jj2000.j2k.wavelet.synthesis.InvWTAdapter

getCompImgHeight, getCompImgWidth, getCompSubsX, getCompSubsY, getCompULX, getCompULY, getImgHeight, getImgULX, getImgULY, getImgWidth, getNomTileHeight, getNomTileWidth, getNumComps, getNumTiles, getNumTiles, getSynSubbandTree, getTile, getTileCompHeight, getTileCompWidth, getTileHeight, getTileIdx, getTilePartULX, getTilePartULY, getTileWidth, nextTile, setImgResLevel, setTile

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface jj2000.j2k.image.BlkImgDataSrc

getCompData, getFixedPoint, getInternCompData

Methods inherited from interface jj2000.j2k.image.ImgData

getCompImgHeight, getCompImgWidth, getCompSubsX, getCompSubsY, getCompULX, getCompULY, getImgHeight, getImgULX, getImgULY, getImgWidth, getNomRangeBits, getNomTileHeight, getNomTileWidth, getNumComps, getNumTiles, getNumTiles, getTile, getTileCompHeight, getTileCompWidth, getTileHeight, getTileIdx, getTilePartULX, getTilePartULY, getTileWidth, nextTile, setTile

Methods inherited from interface jj2000.j2k.wavelet.WaveletTransform

getImplementationType, isReversible

Constructor Detail

InverseWT

public InverseWT(MultiResImgData src,
         DecoderSpecs decSpec)

Initializes this object with the given source of wavelet coefficients. It initializes the resolution level for full resolutioin reconstruction (i.e. the maximum resolution available from the 'src' source).

It is assumed here that all tiles and components have the same reconstruction resolution level. If that was not the case it should be the value for the current tile of the source.

Parameters:

src - from where the wavelet coefficinets should be obtained.

decSpec - The decoder specifications

Method Detail

createInstance

public static InverseWT createInstance(CBlkWTDataSrcDec src,
                       DecoderSpecs decSpec)

Creates an InverseWT object that works on the data type of the source, with the special additional parameters from the parameter list. Currently the parameter list is ignored since no special parameters can be specified for the inverse wavelet transform yet.

Parameters:

src - The source of data for the inverse wavelet transform.

decSpec - The decoder specifications