| java.lang.Object
 jj2000.j2k.roi.encoder.ROIMaskGenerator
All known Subclasses: jj2000.j2k.roi.encoder.RectROIMaskGenerator, jj2000.j2k.roi.encoder.ArbROIMaskGenerator,
| ROIMaskGenerator | | abstract public class ROIMaskGenerator (Code) | | This class generates the ROI masks for the ROIScaler.It gives the scaler
the ROI mask for the current code-block.
The values are calculated from the scaling factors of the ROIs. The
values with which to scale are equal to u-umin where umin is the lowest
scaling factor within the block. The umin value is sent to the entropy
coder to be used for scaling the distortion values.
See Also: RectROIMaskGenerator
See Also: ArbROIMaskGenerator |
| Method Summary | |
| abstract public boolean | getROIMask(DataBlkInt db, Subband sb, int magbits, int c)
This functions gets a DataBlk with the size of the current code-block
and fills it with the ROI mask. | | public ROI[] | getROIs()
| | abstract public void | makeMask(Subband sb, int magbits, int n)
This function generates the ROI mask for the entire tile. | | public void | tileChanged()
|
| nrc | | protected int nrc(Code) | | Number of components
|
| roiInTile | | protected boolean roiInTile(Code) | | |
| rois | | protected ROI[] rois(Code) | | Array containing the ROIs
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| tileMaskMade | | protected boolean tileMaskMade(Code) | | Flag indicating whether a mask has been made for the current tile
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| ROIMaskGenerator | | public ROIMaskGenerator(ROI[] rois, int nrc)(Code) | | The constructor of the mask generator
Parameters:
rois - The ROIs in the image
Parameters:
nrc - The number of components |
| getROIMask | | abstract public boolean getROIMask(DataBlkInt db, Subband sb, int magbits, int c)(Code) | | This functions gets a DataBlk with the size of the current code-block
and fills it with the ROI mask. The lowest scaling value in the mask
for this code-block is returned by the function to be used for
modifying the rate distortion estimations.
Parameters:
db - The data block that is to be filled with the mask
Parameters:
sb - The root of the current subband tree
Parameters:
magbits - The number of magnitude bits in this code-block
Parameters:
c - Component number Whether or not a mask was needed for this tile |
| getROIs | | public ROI[] getROIs()(Code) | | This function returns the ROIs in the image
The ROIs in the image |
| makeMask | | abstract public void makeMask(Subband sb, int magbits, int n)(Code) | | This function generates the ROI mask for the entire tile. The mask is
generated for one component. This method is called once for each tile
and component.
Parameters:
sb - The root of the subband tree used in the decomposition
Parameters:
magbits - The max number of magnitude bits in any code-block
Parameters:
n - component number |
| tileChanged | | public void tileChanged()(Code) | | This function is called every time the tile is changed to indicate
that there is need to make a new mask
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