Java Doc for ArbROIMaskGenerator.java in  » 6.0-JDK-Modules » Java-Advanced-Imaging » jj2000 » j2k » roi » encoder » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » jj2000.j2k.roi.encoder 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   jj2000.j2k.roi.encoder.ROIMaskGenerator
      jj2000.j2k.roi.encoder.ArbROIMaskGenerator

ArbROIMaskGenerator
public class ArbROIMaskGenerator extends ROIMaskGenerator (Code)
This class generates the ROI bit-mask when, at least, one ROI is not rectangular. In this case, the fast ROI bit-mask algorithm generation can not be used.

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:   ROIMaskGenerator
See Also:   ArbROIMaskGenerator




Constructor Summary
public  ArbROIMaskGenerator(ROI[] rois, int nrc, Quantizer src)
    

Method Summary
public  booleangetROIMask(DataBlkInt db, Subband sb, int magbits, int c)
     This functions gets a DataBlk the size of the current code-block an fills this block with the ROI mask.
public  voidmakeMask(Subband sb, int magbits, int c)
     This function generates the ROI mask for one tile-component.

Once the mask is generated in the pixel domain.

public  StringtoString()
    


Constructor Detail
ArbROIMaskGenerator
public ArbROIMaskGenerator(ROI[] rois, int nrc, Quantizer src)(Code)
The constructor of the arbitrary mask generator
Parameters:
  rois - The ROI info.
Parameters:
  nrc - The number of components
Parameters:
  src - The quantizer module




Method Detail
getROIMask
public boolean getROIMask(DataBlkInt db, Subband sb, int magbits, int c)(Code)
This functions gets a DataBlk the size of the current code-block an fills this block with the ROI mask.

In order to get the mask for a particular Subband, the subband tree is traversed and at each decomposition, the ROI masks are computed.

The widths of the synthesis filters corresponding to the wavelet filters used in the wavelet transform are used to expand the ROI masks in the decompositions.
Parameters:
  db - The data block that is to be filled with the mask
Parameters:
  sb - The root of the subband tree to which db belongs
Parameters:
  magbits - The max number of magnitude bits in any code-block
Parameters:
  c - The number of the component Whether or not a mask was needed for this tile




makeMask
public void makeMask(Subband sb, int magbits, int c)(Code)
This function generates the ROI mask for one tile-component.

Once the mask is generated in the pixel domain. it is decomposed following the same decomposition scheme as the wavelet transform.
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:
  c - component number




toString
public String toString()(Code)
This function returns the relevant data of the mask generator



Fields inherited from jj2000.j2k.roi.encoder.ROIMaskGenerator
protected int nrc(Code)(Java Doc)
protected boolean roiInTile(Code)(Java Doc)
protected ROI[] rois(Code)(Java Doc)
protected boolean tileMaskMade(Code)(Java Doc)

Methods inherited from jj2000.j2k.roi.encoder.ROIMaskGenerator
abstract public boolean getROIMask(DataBlkInt db, Subband sb, int magbits, int c)(Code)(Java Doc)
public ROI[] getROIs()(Code)(Java Doc)
abstract public void makeMask(Subband sb, int magbits, int n)(Code)(Java Doc)
public void tileChanged()(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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