GiciImageExtension
Class ImageDeExtension

java.lang.Object
  GiciImageExtension.ImageDeExtension

public class ImageDeExtension
extends java.lang.Object

This class receives an image and delete the files and columns extended during compression process.
Usage example:
construct
set functions
run

Version:

1.0

Author:

Group on Interactive Coding of Images (GICI)

Field Summary

(package private) float[][][]	imageSamples Original image samples (index meaning [z][y][x]).
(package private) int[]	imageWidth Image width of the original image for each of the channels.
(package private) int[]	padRows Definition in ImageExtension.padRows
(package private) boolean	parametersSet To know if parameters are set.
(package private) int	zSize Number of image components.

Constructor Summary

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

Method Summary

static int[]	computePadRows(int zSize, int ySize, int[] imageExtensionType, int[] WTLevels) Computes the number of padding rows that has been added to the original image
static boolean	needDeExtension(int[] padRows, int[] imageWidth, int[] xSizes) Determines if the image should be cropped in order to recover its initial size
float[][][]	run() Inversion of the extension
void	setParameters(int[] imageWidth, int[] padRows) Set the parameters used to invert 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.

imageWidth

int[] imageWidth

Image width of the original image for each of the channels.

Negative values are not allowed for this field.

padRows

int[] padRows

Definition in ImageExtension.padRows

parametersSet

boolean parametersSet

To know if parameters are set.

True indicates that they are set otherwise false.

Constructor Detail

ImageDeExtension

public ImageDeExtension(float[][][] imageSamples)

Constructor that receives the original image samples.

Parameters:

imageSamples - definition in imageSamples

Method Detail

setParameters

public void setParameters(int[] imageWidth,
                          int[] padRows)

Set the parameters used to invert the image extension

Parameters:

imageWidth - definition in imageWidth

padRows - definition in padRows

run

public float[][][] run()
                throws java.lang.Exception

Inversion of the extension

Returns:

the deExtended image

Throws:

java.lang.Exception

needDeExtension

public static boolean needDeExtension(int[] padRows,
                                      int[] imageWidth,
                                      int[] xSizes)

Determines if the image should be cropped in order to recover its initial size

Parameters:

padRows - definition in padRows

imageWidth - definition in imageWidth

xSizes - indicates the size of each channel after reconstruction.

Returns:

a boolean that indicates if ImageDeExtension is required.

computePadRows

public static int[] computePadRows(int zSize,
                                   int ySize,
                                   int[] imageExtensionType,
                                   int[] WTLevels)

Computes the number of padding rows that has been added to the original image

Parameters:

zSize - definition in zSize

ySize - image height of the original image

imageExtensionType - definition in ImageExtension.imageExtensionType

WTLevels - definition in ForwardWaveletTransform.WTLevels

Returns:

an intger array containing the number of padding rows to delete after inverse DWT