Im having problems with the following assignment,

I need to implement are 55 mean filter, 55 Gaussian filter with user-specified parameter, 55 median filter, and 55 Kuwahara filter.

I have seen the implementation one by one in class and have an idea how to do this however my prof wants us to use his sample code as it will look nicer... :) and im having problems using his listeners to implement my code...... if i can get help with the first two filters i can try attempt the last two by myself....he did put in an example add random noise but it doesnt really help me....

here is his code

import java.util.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.image.*;

import java.io.*;

import javax.imageio.*;

// Main class

public class SmoothingFilter extends Frame implements ActionListener {

BufferedImage input;

ImageCanvas source, target;

TextField texSigma;

int width, height;

// Constructor

public SmoothingFilter(String name) {

super("Smoothing Filters");

// load image

try {

input = ImageIO.read(new File(name));

}

catch ( Exception ex ) {

ex.printStackTrace();

}

width = input.getWidth();

height = input.getHeight();

// prepare the panel for image canvas.

Panel main = new Panel();

source = new ImageCanvas(input);

target = new ImageCanvas(input);

main.setLayout(new GridLayout(1, 2, 10, 10));

main.add(source);

main.add(target);

// prepare the panel for buttons.

Panel controls = new Panel();

Button button = new Button("Add noise");

button.addActionListener(this);

controls.add(button);

button = new Button("5x5 mean");

button.addActionListener(this);

controls.add(button);

controls.add(new Label("Sigma:"));

texSigma = new TextField("1", 1);

controls.add(texSigma);

button = new Button("5x5 Gaussian");

button.addActionListener(this);

controls.add(button);

button = new Button("5x5 median");

button.addActionListener(this);

controls.add(button);

button = new Button("5x5 Kuwahara");

button.addActionListener(this);

controls.add(button);

// add two panels

add("Center", main);

add("South", controls);

addWindowListener(new ExitListener());

setSize(width*2+100, height+100);

setVisible(true);

}

class ExitListener extends WindowAdapter {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

}

// Action listener for button click events

public void actionPerformed(ActionEvent e) {

// example -- add random noise

if ( ((Button)e.getSource()).getLabel().equals("Add noise") ) {

Random rand = new Random();

int dev = 64;

for ( int y=0, i=0 ; y

for ( int x=0 ; x

Color clr = new Color(source.image.getRGB(x, y));

int red = clr.getRed() + (int)(rand.nextGaussian() * dev);

int green = clr.getGreen() + (int)(rand.nextGaussian() * dev);

int blue = clr.getBlue() + (int)(rand.nextGaussian() * dev);

red = red < 0 ? 0 : red > 255 ? 255 : red;

green = green < 0 ? 0 : green > 255 ? 255 : green;

blue = blue < 0 ? 0 : blue > 255 ? 255 : blue;

source.image.setRGB(x, y, (new Color(red, green, blue)).getRGB());

}

source.repaint();

}

}

public static void main(String[] args) {

new SmoothingFilter(args.length==1 ? args[0] : "baboo.png");

}

}