As the name implies, this program removes the background from any image or photo. Unwanted colors are first selected by drawing rectangle on the main panel using mouse drag event. The removal process is then performed through the use of the
getRGB() and
setRGB() methods.
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139 | import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.*;
public class BackgroundRemover extends JFrame{
private JButton bopen=null;
private JPanel pmain=null;
private String fname=null;
private JButton bstart=null;
private BufferedImage bufimage=null;
private BufferedImage grayimage=null;
private Color pixcolor[][]=null;
private Point pstart=null;
private Point pend=null;
public BackgroundRemover(){
super("Background Remover");
setSize(800,600);
setLayout(new BorderLayout());
bopen=new JButton("Open");
bopen.addActionListener(new ButtonHandler());
pmain=new WallImage();
pmain.addMouseListener(new BackgroundRemover.MouseHandler());
pmain.addMouseMotionListener(new BackgroundRemover.MouseHandler());
bstart=new JButton("Remove");
bstart.addActionListener(new ButtonHandler());
add("North",bopen);
add("Center",pmain);
add("South",bstart);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
show();
}
class WallImage extends JPanel{
public void paintComponent(Graphics g){
super.paintComponent(g);
Graphics2D g2=(Graphics2D)g;
if(bufimage!=null){
g2.drawImage(bufimage,0,0,pmain);
}
if(pstart!=null&&pend!=null){
g2.setColor(Color.YELLOW);
g2.drawRect(pstart.x,pstart.y,pend.x-pstart.x,pend.y-pstart.y);
}
}
}
class ButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e){
if(e.getActionCommand()=="Open"){
FileDialog fd=new FileDialog(BackgroundRemover.this,"Open Image File",FileDialog.LOAD);
fd.setDirectory("C:\\");
fd.setVisible(true);
fname=fd.getDirectory()+fd.getFile();
try{
bufimage=ImageIO.read(new File(fname));
}catch(Exception ex){
}
pstart=null;
pend=null;
pmain.repaint();
}
if(e.getActionCommand()=="Remove"){
int widthRect=pend.x-pstart.x;
int heightRect=pend.y-pstart.y;
pixcolor=new Color[widthRect][heightRect];
//Graphics2D g2=(Graphics2D)bufimage.getGraphics();
for(int i=0;i<widthRect;i++){
for(int j=0;j<heightRect;j++){
pixcolor[i][j]=new Color(bufimage.getRGB(pstart.x+i,pstart.y+j));
}
}
int widthImg=bufimage.getWidth();
int heightImg=bufimage.getHeight();
Graphics2D g2=(Graphics2D)bufimage.getGraphics();
for(int i=0;i<heightImg;i++){
for(int j=0;j<widthImg;j++){
Color c=new Color(bufimage.getRGB(j,i));
for(int a=0;a<widthRect;a++){
for(int b=0;b<heightRect;b++){
if(c.equals(pixcolor[a][b])){
bufimage.setRGB(j,i,new Color(255,255,255).getRGB());
}
}
}
}
}
pixcolor=null;
repaint();
}
}
}
class MouseHandler implements MouseMotionListener, MouseListener{
public void mouseMoved(MouseEvent e){
}
public void mouseDragged(MouseEvent e){
pend = e.getPoint();
repaint();
}
public void mouseEntered(MouseEvent e){
}
public void mouseExited(MouseEvent e){
}
public void mouseReleased(MouseEvent e){
repaint();
}
public void mousePressed(MouseEvent e){
pstart=e.getPoint();
}
public void mouseClicked(MouseEvent e){
}
}
public static void main(String[] args){
new BackgroundRemover();
}
}
|
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