CADI.Common.LogicalTarget.JPEG2000.Parameters
Class QCDParameters

java.lang.Object
  CADI.Common.LogicalTarget.JPEG2000.Parameters.QCDParameters

public class QCDParameters
extends java.lang.Object

This class storages the quantization default (QCD) and the quantization component (QCC). Further and detailed information, see ISO/IEC 15444-1 section A.6.4 and section A.6.5, respectively.

Version:

1.0 07/11/2008

Author:

Group on Interactive Coding of Images (GICI)

Field Summary

int[][][]	QExponents Quantization exponents for each component, resolution level and subband (LL, HL, LH, HH).
int	QGuardBits In this class we don't modify or use this variable.
int[][][]	QMantisas Quantization mantisas for each component, resolution level and subband (LL, HL, LH, HH).
int[]	QTypes Type of quantization to apply in each image component.

Constructor Summary

QCDParameters()
Constructor.

QCDParameters(QCDParameters parameters)
Deep copy constructor.

Method Summary

void	list(java.io.PrintStream out) Prints this QCD parameters' fields to the specified output stream.
void	reset() Sets the attributes to its initial values.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

QTypes

public int[] QTypes

Type of quantization to apply in each image component.

Valid values are:

• 0 - Reversible quantitzation
• 1 - Irreversible quantization

QExponents

public int[][][] QExponents

Quantization exponents for each component, resolution level and subband (LL, HL, LH, HH).
Index of arrays means:
z: image component
resolutionLevel: 0 is the LL subband, and 1, 2, ... represents next starting with the little one
subband: 0 - HL, 1 - LH, 2 - HH (if resolutionLevel == 0 --> 0 - LL)

Values between 0 to 2^5 allowed.

QMantisas

public int[][][] QMantisas

Quantization mantisas for each component, resolution level and subband (LL, HL, LH, HH).
Index of arrays means:
z: image component
resolutionLevel: 0 is the LL subband, and 1, 2, ... represents next starting with the little one
subband: 0 - HL, 1 - LH, 2 - HH (if resolutionLevel == 0 --> 0 - LL)

Values between 0 to 2^11 allowed.

QGuardBits

public int QGuardBits

In this class we don't modify or use this variable. Only explanation. It's used in FileWrite/PrecinctBuild. Guard Bits are used to increment the number of possible bit planes when subbands are shifted. It is very recommendable that this variable has values equal or greater than one to avoid possible errors.

Possible values are from 0 to 7.

Constructor Detail

QCDParameters

public QCDParameters()

Constructor.

QCDParameters

public QCDParameters(QCDParameters parameters)

Deep copy constructor.

Parameters:

parameters - an object of this class.

Method Detail

reset

public void reset()

Sets the attributes to its initial values.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

list

public void list(java.io.PrintStream out)

Prints this QCD parameters' fields to the specified output stream. This method is useful for debugging.

Parameters:

out - an output stream.