| jj2000.j2k.wavelet.synthesis.MultiResImgData
All known Subclasses: jj2000.j2k.wavelet.synthesis.MultiResImgDataAdapter,
| MultiResImgData | | public interface MultiResImgData (Code) | | This interface defines methods to access image attributes (width, height,
number of components, etc.) of multiresolution images, such as those
resulting from an inverse wavelet transform. The image can be tiled or not
(i.e. if the image is not tiled then there is only 1 tile). It should be
implemented by all classes that provide multi-resolution image data, such
as entropy decoders, dequantizers, etc. This interface, however, does not
define methods to transfer image data (i.e. pixel data), that is defined by
other interfaces, such as 'CBlkQuantDataSrcDec'.
This interface is very similar to the 'ImgData' one. It differs only by
the fact that it handles multiple resolutions.
Resolution levels are counted from 0 to L. Resolution level 0 is the
lower resolution, while L is the maximum resolution level, or full
resolution, which is returned by 'getMaxResLvl()'. Note that there are L+1
resolution levels available.
As in the 'ImgData' interface a multi-resolution image lies on top of a
canvas. The canvas coordinates are mapped from the full resolution
reference grid (i.e. resolution level 'L' reference grid) to a resolution
level 'l' reference grid by '(x_l,y_l) =
(ceil(x_l/2^(L-l)),ceil(y_l/2^(L-l)))', where '(x,y)' are the full
resolution reference grid coordinates and '(x_l,y_l)' are the level 'l'
reference grid coordinates.
For details on the canvas system and its implications consult the
'ImgData' interface.
Note that tile sizes may not be obtained by simply dividing the tile
size in the reference grid by the subsampling factor.
See Also: jj2000.j2k.image.ImgData
See Also: jj2000.j2k.quantization.dequantizer.CBlkQuantDataSrcDec |
| Method Summary | |
| public int | getCompImgHeight(int n, int rl)
Returns the height in pixels of the specified component in the overall
image, for the given resolution level.
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. | | public int | getCompImgWidth(int c, int rl)
Returns the width in pixels of the specified component in the overall
image, for the given resolution level.
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. | | public int | getCompSubsX(int c)
Returns the component subsampling factor in the horizontal direction,
for the specified component. | | public int | getCompSubsY(int c)
Returns the component subsampling factor in the vertical direction, for
the specified component. | | public int | getImgHeight(int rl)
Returns the overall height of the image in pixels, for the given
resolution level. | | public int | getImgULX(int rl)
Returns the horizontal coordinate of the image origin, the top-left
corner, in the canvas system, on the reference grid at the specified
resolution level. | | public int | getImgULY(int rl)
Returns the vertical coordinate of the image origin, the top-left
corner, in the canvas system, on the reference grid at the specified
resolution level. | | public int | getImgWidth(int rl)
Returns the overall width of the image in pixels, for the given
resolution level. | | public int | getNomTileHeight()
| | public int | getNomTileWidth()
| | public int | getNumComps()
Returns the number of components in the image. | | public Point | getNumTiles(Point co)
Returns the number of tiles in the horizontal and vertical directions.
Parameters:
co - If not null this object is used to return the information. | | public int | getNumTiles()
Returns the total number of tiles in the image. | | public int | getResULX(int c, int rl)
Returns the horizontal coordinate of the upper-left corner of the
specified resolution in the given component of the current tile. | | public int | getResULY(int c, int rl)
Returns the vertical coordinate of the upper-left corner of the
specified resolution in the given component of the current tile. | | public SubbandSyn | getSynSubbandTree(int t, int c)
| | public Point | getTile(Point co)
Returns the indexes of the current tile. | | public int | getTileCompHeight(int t, int c, int rl)
Returns the height in pixels of the specified tile-component for the
given resolution level.
Parameters:
t - The tile index.
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. | | public int | getTileCompWidth(int t, int c, int rl)
Returns the width in pixels of the specified tile-component for the
given resolution level.
Parameters:
t - Tile index
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. | | public int | getTileHeight(int rl)
Returns the overall height of the current tile in pixels, for the given
resolution level. | | public int | getTileIdx()
Returns the index of the current tile, relative to a standard scan-line
order. | | public int | getTilePartULX()
| | public int | getTilePartULY()
| | public int | getTileWidth(int rl)
Returns the overall width of the current tile in pixels for the given
resolution level. | | public void | nextTile()
Advances to the next tile, in standard scan-line order (by rows then
columns). | | public void | setTile(int x, int y)
Changes the current tile, given the new indexes. |
| getCompImgHeight | | public int getCompImgHeight(int n, int rl)(Code) | | Returns the height in pixels of the specified component in the overall
image, for the given resolution level.
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. The height in pixels of component n in the overallimage. |
| getCompImgWidth | | public int getCompImgWidth(int c, int rl)(Code) | | Returns the width in pixels of the specified component in the overall
image, for the given resolution level.
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. The width in pixels of component c in the overallimage. |
| getCompSubsX | | public int getCompSubsX(int c)(Code) | | 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.
Parameters:
c - The index of the component (between 0 and N-1) The horizontal subsampling factor of component 'c'
See Also: jj2000.j2k.image.ImgData |
| getCompSubsY | | public int getCompSubsY(int c)(Code) | | 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.
Parameters:
c - The index of the component (between 0 and N-1) The vertical subsampling factor of component 'c'
See Also: jj2000.j2k.image.ImgData |
| getImgHeight | | public int getImgHeight(int rl)(Code) | | Returns the overall height of the image in pixels, for the given
resolution level. This is the image's height without accounting for any
component subsampling or tiling. The resolution level is indexed from
the lowest number of resolution levels of all components of the current
tile.
Parameters:
rl - The resolution level, from 0 to L. The total image's height in pixels. |
| getImgULX | | public int getImgULX(int rl)(Code) | | Returns the horizontal coordinate of the image origin, the top-left
corner, in the canvas system, on the reference grid at the specified
resolution level. The resolution level is indexed from the lowest
number of resolution levels of all components of the current tile.
Parameters:
rl - The resolution level, from 0 to L. The horizontal coordinate of the image origin in the canvassystem, on the reference grid. |
| getImgULY | | public int getImgULY(int rl)(Code) | | Returns the vertical coordinate of the image origin, the top-left
corner, in the canvas system, on the reference grid at the specified
resolution level. The resolution level is indexed from the lowest
number of resolution levels of all components of the current tile.
Parameters:
rl - The resolution level, from 0 to L. The vertical coordinate of the image origin in the canvassystem, on the reference grid. |
| getImgWidth | | public int getImgWidth(int rl)(Code) | | Returns the overall width of the image in pixels, for the given
resolution level. This is the image's width without accounting for any
component subsampling or tiling. The resolution level is indexed from
the lowest number of resolution levels of all components of the current
tile.
Parameters:
rl - The resolution level, from 0 to L. The total image's width in pixels. |
| getNomTileHeight | | public int getNomTileHeight()(Code) | | Returns the nominal tiles height
|
| getNomTileWidth | | public int getNomTileWidth()(Code) | | Returns the nominal tiles width
|
| getNumComps | | public int getNumComps()(Code) | | Returns the number of components in the image.
The number of components in the image. |
| getNumTiles | | public Point getNumTiles(Point co)(Code) | | Returns the number of tiles in the horizontal and vertical directions.
Parameters:
co - If not null this object is used to return the information. Ifnull a new one is created and returned. The number of tiles in the horizontal (Point.x) and vertical(Point.y) directions. |
| getNumTiles | | public int getNumTiles()(Code) | | Returns the total number of tiles in the image.
The total number of tiles in the image. |
| getResULX | | public int getResULX(int c, int rl)(Code) | | Returns the horizontal coordinate of the upper-left corner of the
specified resolution in the given component of the current tile.
Parameters:
c - The component index.
Parameters:
rl - The resolution level index. |
| getResULY | | public int getResULY(int c, int rl)(Code) | | Returns the vertical coordinate of the upper-left corner of the
specified resolution in the given component of the current tile.
Parameters:
c - The component index.
Parameters:
rl - The resolution level index. |
| getSynSubbandTree | | public SubbandSyn getSynSubbandTree(int t, int c)(Code) | | Returns the specified synthesis subband tree
Parameters:
t - Tile index.
Parameters:
c - Component index. |
| getTile | | public Point getTile(Point co)(Code) | | Returns the indexes of the current tile. These are the horizontal and
vertical indexes of the current tile.
Parameters:
co - If not null this object is used to return the information. Ifnull a new one is created and returned. The current tile's indexes (vertical and horizontal indexes). |
| getTileCompHeight | | public int getTileCompHeight(int t, int c, int rl)(Code) | | Returns the height in pixels of the specified tile-component for the
given resolution level.
Parameters:
t - The tile index.
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. The height in pixels of component c in tilet. |
| getTileCompWidth | | public int getTileCompWidth(int t, int c, int rl)(Code) | | Returns the width in pixels of the specified tile-component for the
given resolution level.
Parameters:
t - Tile index
Parameters:
c - The index of the component, from 0 to N-1.
Parameters:
rl - The resolution level, from 0 to L. The width in pixels of component c in tile tfor resolution rl. |
| getTileHeight | | public int getTileHeight(int rl)(Code) | | Returns the overall height of the current tile in pixels, for the given
resolution level. This is the tile's height without accounting for any
component subsampling. The resolution level is indexed from the lowest
number of resolution levels of all components of the current tile.
Parameters:
rl - The resolution level, from 0 to L. The total current tile's height in pixels. |
| getTileIdx | | public int getTileIdx()(Code) | | Returns the index of the current tile, relative to a standard scan-line
order.
The current tile's index (starts at 0). |
| getTilePartULX | | public int getTilePartULX()(Code) | | Returns the horizontal tile partition offset in the reference grid
|
| getTilePartULY | | public int getTilePartULY()(Code) | | Returns the vertical tile partition offset in the reference grid
|
| getTileWidth | | public int getTileWidth(int rl)(Code) | | Returns the overall width of the current tile in pixels for the given
resolution level. This is the tile's width without accounting for any
component subsampling. The resolution level is indexed from the lowest
number of resolution levels of all components of the current tile.
Parameters:
rl - The resolution level, from 0 to L. The total current tile's width in pixels. |
| nextTile | | public void nextTile()(Code) | | 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).
|
| setTile | | public void setTile(int x, int y)(Code) | | Changes the current tile, given the new indexes. An
IllegalArgumentException is thrown if the indexes do not correspond to
a valid tile.
Parameters:
x - The horizontal indexes the tile.
Parameters:
y - The vertical indexes of the new tile. |
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