import java.awt.*;
import java.applet.Applet;
import java.awt.image.*;
import java.awt.geom.AffineTransform;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;


public class LookUp extends Applet {

    private BufferedImage bi;

    public LookUp() {
            setBackground(Color.white);
            Image img = getToolkit().getImage("images/bld.jpg");
            try {
                MediaTracker tracker = new MediaTracker(this);
                tracker.addImage(img, 0);
                tracker.waitForID(0);
            } catch (Exception e) {}
            int iw = img.getWidth(this);
            int ih = img.getHeight(this);
            bi = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
            Graphics2D big = bi.createGraphics();
            big.drawImage(img,0,0,this);

    }


    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        int w = getSize().width;
        int h = getSize().height;
        int bw = bi.getWidth(this);
        int bh = bi.getHeight(this);

        AffineTransform at = new AffineTransform();
        at.scale(w/2.0/bw, h/1.0/bh);
        BufferedImageOp biop = null;
	BufferedImage bimg = new BufferedImage(bw,bh,BufferedImage.TYPE_INT_RGB);
	byte reverse[] = new byte[256];
        for (int j=0; j<200; j++){ 
       		reverse[j]=(byte)(256-j); 
	}	
      	ByteLookupTable blut=new ByteLookupTable(0, reverse); 
      	LookupOp lop = new LookupOp(blut, null); 
      	lop.filter(bi,bimg);  
        biop = new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
	g2.drawImage(bi, biop, 0, 0);
        g2.drawImage(bimg,biop,w/2+3,0);
    }

    public static void main(String s[]) {
	WindowListener l = new WindowAdapter() {
	    public void windowClosing(WindowEvent e) {System.exit(0);}
	};
	Frame f = new Frame("LookUp");
	f.addWindowListener(l);
	f.add("Center", new LookUp());
	f.pack();
	f.setSize(new Dimension(600, 300));
	f.show();
    }
}