Cloning BufferedImage

Question

Please can someone advise on the correct way to produce a deep copy of a BufferedImage. Normal cloning does not seem to work.
Is this a correct implementation, so that copied images will not have shared raster data with the original (ie. so when I change the original, the changes are not replicated in the copy).
public BufferedImage copyBufferedImage(BufferedImage original_image)
return (BufferedImage)original_image.getScaledInstance(original_image.getWidth(), original_image.getHeight(),BufferedImage.TYPE_BYTE_GRAY);
Many thanks in advance
Dave

Answer 1

Why not create a new BufferedImage of the same type as
the original then just draw the original image onto
the graphics of the second.
BufferedImage newImage = new BufferedImage(original.getWidth(),original.getHeight(), original.getColorModel());There's no BufferedImage constructor that takes a width, height and colormodel, or did you mean for
the third argument to be original.getType()? Even then, you can't do this if the type of the BufferedImage is
TYPE_CUSTOM, which is not unusual. Why not use deepCopy:
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import javax.swing.*;
public class Test {
    static BufferedImage deepCopy(BufferedImage bi) {
        ColorModel cm = bi.getColorModel();
        boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
        WritableRaster raster = bi.copyData(null);
        return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
    public static void main(String[] args) throws IOException {
        URL url = new URL("http://today.java.net/jag/bio/JagHeadshot-small.jpg");
        BufferedImage image = ImageIO.read(url);
        BufferedImage image2 = deepCopy(image);
        Graphics2D g = image.createGraphics();
        g.setColor(Color.RED);
        g.fillRect(100,100,50,50);
        g.dispose();
        JPanel p = new JPanel();
        p.add(new JLabel(new ImageIcon(image)));
        p.add(new JLabel(new ImageIcon(image2)));
        JFrame f = new JFrame("Test");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setContentPane(p);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);