j2d
Class ImageProcessor

java.lang.Object
  j2d.ImageProcessor

All Implemented Interfaces:

java.awt.image.ImageObserver

Direct Known Subclasses:

ColorMapGenerator, ColorMapGenerator, ColorMapGenerator, ExponentialStretchProcessor, FalseColorProcessor, HistogramEQProcessor, LinearMappingProcessor

public abstract class ImageProcessor
extends java.lang.Object
implements java.awt.image.ImageObserver

This class will be the basis of many image processing algorithms. All image processing algorithms operate on an image and require the image's height and width. This class encapsulates that functionality. Also, all image processing operations will require a performAlgorithm() method. This method is left as abstract.

Field Summary

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

ImageProcessor()
Construct a new ImageProcessor.

Method Summary

java.awt.Image	getBaseImage() Return a handle to the base image.
int	getBaseImageHeight() Obtain the height of the base image.
int	getBaseImageWidth() Obtain the width of the base image.
int[]	getPixels() Return newImage converted to an array of pixels.
java.awt.Image	getProcessedImage() Return a handle to the processed image.
boolean	imageUpdate(java.awt.Image img, int infoflags, int x, int y, int width, int height) Implementation of ImageObserver.
void	openImage(java.io.File file) Set the base image reference to an image object read from the specified file.
abstract void	processImage() This abstract function must be overridden by any actual ImageProcessor implementation.
void	setBaseImage(java.awt.Image newImage) Set the base image reference.
void	setPixels(int[] pixels) Store the array of pixels into newImage

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageProcessor

public ImageProcessor()

Construct a new ImageProcessor.

Method Detail

openImage

public void openImage(java.io.File file)

Set the base image reference to an image object read from the specified file.

setBaseImage

public void setBaseImage(java.awt.Image newImage)

Set the base image reference.

getBaseImage

public java.awt.Image getBaseImage()

Return a handle to the base image.

getBaseImageWidth

public int getBaseImageWidth()

Obtain the width of the base image.

getBaseImageHeight

public int getBaseImageHeight()

Obtain the height of the base image.

getProcessedImage

public java.awt.Image getProcessedImage()

Return a handle to the processed image.

getPixels

public int[] getPixels()

Return newImage converted to an array of pixels.

setPixels

public void setPixels(int[] pixels)

Store the array of pixels into newImage

imageUpdate

public boolean imageUpdate(java.awt.Image img,
                           int infoflags,
                           int x,
                           int y,
                           int width,
                           int height)

Implementation of ImageObserver. This is used in case the image takes some time to load and the width and height are not immediately available.

Specified by:

imageUpdate in interface java.awt.image.ImageObserver

processImage

public abstract void processImage()
                           throws java.lang.Exception

This abstract function must be overridden by any actual ImageProcessor implementation. This is where the real image processing happens. If the implementation generates an output image, performAlgorithm is responsible for updating newImage.

Throws:

java.lang.Exception