GiciImageExtension
Class ImageExtension

java.lang.Object
  GiciImageExtension.ImageExtension

public class ImageExtension
extends java.lang.Object

This class receives an image and performs an extension to the specified components.
Usage example:
construct
set functions
run

Version:

1.1

Author:

Group on Interactive Coding of Images (GICI)

Field Summary

(package private) int[]	imageExtensionType Extension Type for each of the channels.
(package private) float[][][]	imageSamples Original image samples (index meaning [z][y][x]).
(package private) int[]	padRows Number of 'padding' rows to delete after inverse DWT for each component
(package private) boolean	parametersSet To know if parameters are set.
(package private) int[]	WTLevels Definition in ForwardWaveletTransform.WTLevels
(package private) int	xSize Image width.
(package private) int	ySize Image height.
(package private) int	zSize Number of image components.

Constructor Summary

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

Method Summary

int	getExtendedIndex(int indexToExtend, int originalSize, int extensionType) Finds the index to extend a vector according to the type selected
int[]	getPadRows()
static boolean	needImageExtension(int[] imageExtensionType, int[] WTLevels, int xSize, int ySize, int zSize) Indicates whether image extension must be applied
float[][][]	run() Performs the extension desired to each component
void	setParameters(int[] imageExtensionType, int[] WTLevels) Set the parameters used to do the image extension

Methods inherited from class java.lang.Object

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

Field Detail

imageSamples

float[][][] imageSamples

Original image samples (index meaning [z][y][x]).

All values allowed.

zSize

int zSize

Number of image components.

Negative values are not allowed for this field.

ySize

int ySize

Image height.

Negative values are not allowed for this field.

xSize

int xSize

Image width.

Negative values are not allowed for this field.

imageExtensionType

int[] imageExtensionType

Extension Type for each of the channels.

Following values are allowed : 0 - Repeat last value (CCSDS Recommended). 1 - Symmetric extension. 2. - No Extension.

WTLevels

int[] WTLevels

Definition in ForwardWaveletTransform.WTLevels

parametersSet

boolean parametersSet

To know if parameters are set.

True indicates that they are set otherwise false.

padRows

int[] padRows

Number of 'padding' rows to delete after inverse DWT for each component

Negative values are not allowed.

Constructor Detail

ImageExtension

public ImageExtension(float[][][] imageSamples)

Constructor that receives the original image samples.

Parameters:

imageSamples - definition in imageSamples

Method Detail

setParameters

public void setParameters(int[] imageExtensionType,
                          int[] WTLevels)

Set the parameters used to do the image extension

Parameters:

imageExtensionType - definition in imageExtensionType

WTLevels - definition in ForwardWaveletTransform.WTLevels

needImageExtension

public static boolean needImageExtension(int[] imageExtensionType,
                                         int[] WTLevels,
                                         int xSize,
                                         int ySize,
                                         int zSize)

Indicates whether image extension must be applied

Parameters:

imageExtensionType - definition in imageExtensionType

WTLevels - definition in ForwardWaveletTransform.WTLevels

xSize - integer containing the width of the original image

ySize - integer containing the height of the original image

zSize - number of components

Returns:

a boolean that indicates if extension must be performed

getExtendedIndex

public int getExtendedIndex(int indexToExtend,
                            int originalSize,
                            int extensionType)

Finds the index to extend a vector according to the type selected

Parameters:

indexToExtend - index of the extended position

originalSize - size of the original signal

extensionType - type of extension

Returns:

an integer corresponding to the index in the original of the position that is located the value of the extended position

run

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

Performs the extension desired to each component

Returns:

a float array containing the extended image

Throws:

ParameterException - when an invalid or unrecognized exception is detected it will be thrown

getPadRows

public int[] getPadRows()

Returns:

an integer array that indicates how many rows have been added for each channel