Class InvWTAdapter
- All Implemented Interfaces:
ImgData,InvWT,WaveletTransform
- Direct Known Subclasses:
InverseWT
This abstract class can be used to facilitate the development of other classes that implement the 'InvWT' interface, because most of the trivial methods are already implemented.
If the default implementation of a method provided in this class does not suit a particular implementation of the 'InvWT' interface, the method can be overriden to implement the proper behaviour.
If the 'setImgResLevel()' method is overriden then it is very important that the one of this class is called from the overriding method, so that the other methods in this class return the correct values.
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected DecoderSpecsThe decoder specificationsprotected intThe maximum available image resolution levelprotected MultiResImgDataThe 'MultiResImgData' sourceprotected intThe resquested image resolution level for reconstruction.Fields inherited from interface jj2000.j2k.wavelet.WaveletTransform
WT_IMPL_FULL, WT_IMPL_LINE -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotectedInvWTAdapter(MultiResImgData src, DecoderSpecs decSpec) Instantiates the 'InvWTAdapter' object using the specified 'MultiResImgData' source. -
Method Summary
Modifier and TypeMethodDescriptionintgetCompImgHeight(int c) Returns the height in pixels of the specified component in the overall image.intgetCompImgWidth(int c) Returns the width in pixels of the specified component in the overall image.intgetCompSubsX(int c) Returns the component subsampling factor in the horizontal direction, for the specified component.intgetCompSubsY(int c) Returns the component subsampling factor in the vertical direction, for the specified component.intgetCompULX(int c) Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile.intgetCompULY(int c) Returns the vertical coordinate of the upper-left corner of the specified component in the current tile.intReturns the overall height of the image in pixels.intReturns the horizontal coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.intReturns the vertical coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.intReturns the overall width of the image in pixels.intReturns the nominal height of tilesintReturns the nominal width of tilesintReturns the number of components in the image.intReturns the total number of tiles in the image.getNumTiles(Point co) Returns the number of tiles in the horizontal and vertical directions.getSynSubbandTree(int t, int c) Returns the specified synthesis subband treeReturns the indixes of the current tile.intgetTileCompHeight(int t, int c) Returns the height in pixels of the specified tile-component.intgetTileCompWidth(int t, int c) Returns the width in pixels of the specified tile-componentintReturns the overall height of the current tile in pixels.intReturns the index of the current tile, relative to a standard scan-line order.intReturns the horizontal tile partition offset in the reference gridintReturns the vertical tile partition offset in the reference gridintReturns the overall width of the current tile in pixels.voidnextTile()Advances to the next tile, in standard scan-line order (by rows then columns).voidsetImgResLevel(int rl) Sets the image reconstruction resolution level.voidsetTile(int x, int y) Changes the current tile, given the new indices.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface jj2000.j2k.image.ImgData
getNomRangeBitsMethods inherited from interface jj2000.j2k.wavelet.WaveletTransform
getImplementationType, isReversible
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Field Details
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decSpec
The decoder specifications -
mressrc
The 'MultiResImgData' source -
reslvl
protected int reslvlThe resquested image resolution level for reconstruction. -
maxImgRes
protected int maxImgResThe maximum available image resolution level
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Constructor Details
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InvWTAdapter
Instantiates the 'InvWTAdapter' object using the specified 'MultiResImgData' source. The reconstruction resolution level is set to full resolution (i.e. the maximum resolution level).- Parameters:
src- From where to obtain the values to returndecSpec- The decoder specifications
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Method Details
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setImgResLevel
public void setImgResLevel(int rl) Sets the image reconstruction resolution level. A value of 0 means reconstruction of an image with the lowest resolution (dimension) available.Note: Image resolution level indexes may differ from tile-component resolution index. They are indeed indexed starting from the lowest number of decomposition levels of each component of each tile.
Example: For an image (1 tile) with 2 components (component 0 having 2 decomposition levels and component 1 having 3 decomposition levels), the first (tile-) component has 3 resolution levels and the second one has 4 resolution levels, whereas the image has only 3 resolution levels available.
- Specified by:
setImgResLevelin interfaceInvWT- Parameters:
rl- The image resolution level.
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getTileWidth
public int getTileWidth()Returns the overall width of the current tile in pixels. This is the tile's width without accounting for any component subsampling. This is also referred as the reference grid width in the current tile.This default implementation returns the value of the source at the current reconstruction resolution level.
- Specified by:
getTileWidthin interfaceImgData- Returns:
- The total current tile's width in pixels.
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getTileHeight
public int getTileHeight()Returns the overall height of the current tile in pixels. This is the tile's height without accounting for any component subsampling. This is also referred as the reference grid height in the current tile.This default implementation returns the value of the source at the current reconstruction resolution level.
- Specified by:
getTileHeightin interfaceImgData- Returns:
- The total current tile's height in pixels.
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getNomTileWidth
public int getNomTileWidth()Returns the nominal width of tiles- Specified by:
getNomTileWidthin interfaceImgData
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getNomTileHeight
public int getNomTileHeight()Returns the nominal height of tiles- Specified by:
getNomTileHeightin interfaceImgData
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getImgWidth
public int getImgWidth()Returns the overall width of the image in pixels. This is the image's width without accounting for any component subsampling or tiling.- Specified by:
getImgWidthin interfaceImgData- Returns:
- The total image's width in pixels.
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getImgHeight
public int getImgHeight()Returns the overall height of the image in pixels. This is the image's height without accounting for any component subsampling or tiling.- Specified by:
getImgHeightin interfaceImgData- Returns:
- The total image's height in pixels.
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getNumComps
public int getNumComps()Returns the number of components in the image.- Specified by:
getNumCompsin interfaceImgData- Returns:
- The number of components in the image.
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getCompSubsX
public int getCompSubsX(int c) 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.- Specified by:
getCompSubsXin interfaceImgData- Parameters:
c- The index of the component (between 0 and N-1).- Returns:
- The horizontal subsampling factor of component 'c'.
- See Also:
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getCompSubsY
public int getCompSubsY(int c) 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.- Specified by:
getCompSubsYin interfaceImgData- Parameters:
c- The index of the component (between 0 and N-1).- Returns:
- The vertical subsampling factor of component 'c'.
- See Also:
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getTileCompWidth
public int getTileCompWidth(int t, int c) Returns the width in pixels of the specified tile-component- Specified by:
getTileCompWidthin interfaceImgData- Parameters:
t- Tile indexc- The index of the component, from 0 to N-1.- Returns:
- The width in pixels of component n in tile t.
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getTileCompHeight
public int getTileCompHeight(int t, int c) Returns the height in pixels of the specified tile-component.This default implementation returns the value of the source at the current reconstruction resolution level.
- Specified by:
getTileCompHeightin interfaceImgData- Parameters:
t- The tile index.c- The index of the component, from 0 to N-1.- Returns:
- The height in pixels of component n in tile t.
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getCompImgWidth
public int getCompImgWidth(int c) Returns the width in pixels of the specified component in the overall image.- Specified by:
getCompImgWidthin interfaceImgData- Parameters:
c- The index of the component, from 0 to N-1.- Returns:
- The width in pixels of component c in the overall image.
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getCompImgHeight
public int getCompImgHeight(int c) Returns the height in pixels of the specified component in the overall image.This default implementation returns the value of the source at the current reconstruction resolution level.
- Specified by:
getCompImgHeightin interfaceImgData- Parameters:
c- The index of the component, from 0 to N-1.- Returns:
- The height in pixels of component n in the overall image.
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setTile
public void setTile(int x, int y) Changes the current tile, given the new indices. An IllegalArgumentException is thrown if the coordinates do not correspond to a valid tile.This default implementation calls the same method on the source.
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nextTile
public void 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).This default implementation calls the same method on the source.
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getTile
Returns the indixes of the current tile. These are the horizontal and vertical indexes of the current tile.This default implementation returns the value of the source.
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getTileIdx
public int getTileIdx()Returns the index of the current tile, relative to a standard scan-line order.This default implementation returns the value of the source.
- Specified by:
getTileIdxin interfaceImgData- Returns:
- The current tile's index (starts at 0).
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getCompULX
public int getCompULX(int c) Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile.- Specified by:
getCompULXin interfaceImgData- Parameters:
c- The component index.
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getCompULY
public int getCompULY(int c) Returns the vertical coordinate of the upper-left corner of the specified component in the current tile.- Specified by:
getCompULYin interfaceImgData- Parameters:
c- The component index.
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getImgULX
public int getImgULX()Returns the horizontal coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.This default implementation returns the value of the source at the current reconstruction resolution level.
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getImgULY
public int getImgULY()Returns the vertical coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.This default implementation returns the value of the source at the current reconstruction resolution level.
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getTilePartULX
public int getTilePartULX()Returns the horizontal tile partition offset in the reference grid- Specified by:
getTilePartULXin interfaceImgData
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getTilePartULY
public int getTilePartULY()Returns the vertical tile partition offset in the reference grid- Specified by:
getTilePartULYin interfaceImgData
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getNumTiles
Returns the number of tiles in the horizontal and vertical directions.This default implementation returns the value of the source.
- Specified by:
getNumTilesin interfaceImgData- Parameters:
co- If not null this object is used to return the information. If null a new one is created and returned.- Returns:
- The number of tiles in the horizontal (Point.x) and vertical (Point.y) directions.
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getNumTiles
public int getNumTiles()Returns the total number of tiles in the image.This default implementation returns the value of the source.
- Specified by:
getNumTilesin interfaceImgData- Returns:
- The total number of tiles in the image.
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getSynSubbandTree
Returns the specified synthesis subband tree- Parameters:
t- Tile index.c- Component index.
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