GiciTransform
Class LevelShift

java.lang.Object
  GiciTransform.LevelShift

public class LevelShift
extends java.lang.Object

This class receives an image and performs level shift operations. Usage example:
construct
setParameters
run
get functions

Version:

1.0

Author:

Group on Interactive Coding of Images (GICI)

Field Summary

(package private) float[][][]	imageSamples
(package private) boolean[]	LSComponents Specification of the image component to apply the level shift.
(package private) int[]	LSSubsValues Substracted values of each image component.
(package private) int	LSType Shift type to apply.
(package private) boolean	parametersSet To know if parameters are set.
(package private) int[]	QComponentsBits
(package private) int	xSize
(package private) int	ySize
(package private) int	zSize

Constructor Summary

LevelShift(float[][][] imageSamples)
Constructor that receives the original image samples.

Method Summary

int[]	getSubsValues()
float[][][]	run() Performs the level shift operations and returns the result image.
void	setParameters(int LSType, boolean[] LSComponents, int[] LSSubsValues, int[] QComponentsBits) Set the parameters used to do the level shift operation.

Methods inherited from class java.lang.Object

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

Field Detail

imageSamples

float[][][] imageSamples

zSize

int zSize

ySize

int ySize

xSize

int xSize

LSType

int LSType

Shift type to apply.

Valid values are:

• 0 - No level shift
• 1 - JPEG2000 standard level shifting (only non-negative components)
• 2 - Range center substract
• 3 - Average substract
• 4 - Specific values substract (if this case is selectioned, then is necessary to pass LSSubsValues in setParameters function)

LSComponents

boolean[] LSComponents

Specification of the image component to apply the level shift.

If true the level shift will be applied, otherwise false.

LSSubsValues

int[] LSSubsValues

Substracted values of each image component.

If LSType == 4 then this variable cannot be null, otherwise it can be null in setParameters function

QComponentsBits

int[] QComponentsBits

parametersSet

boolean parametersSet

To know if parameters are set.

True indicates that they are set otherwise false.

Constructor Detail

LevelShift

public LevelShift(float[][][] imageSamples)

Constructor that receives the original image samples.

Parameters:

imageSamples -

Method Detail

setParameters

public void setParameters(int LSType,
                          boolean[] LSComponents,
                          int[] LSSubsValues,
                          int[] QComponentsBits)

Set the parameters used to do the level shift operation.

Parameters:

LSType - definition in LSType

LSComponents - definition in LSComponents

LSSubsValues - definition in LSSubsValues

QComponentsBits -

run

public float[][][] run()
                throws ErrorException

Performs the level shift operations and returns the result image.

Returns:

the level shifted image

Throws:

ErrorException - when parameters are not set or unrecognized level shift type is passed

getSubsValues

public int[] getSubsValues()

Returns:

LSSubsValues definition in LSSubsValues