import java.awt.image.*;
import javax.swing.*;
import java.awt.*;

public class ImageProcessing {
    private static JFrame frame;
    private static JLabel label;


    public static void main(String[] args){

    }

    
    public static void display(BufferedImage image){
        if(frame==null){
            frame=new JFrame();
            frame.setTitle("stained_image");
            frame.setSize(image.getWidth(), image.getHeight());
            frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
            label=new JLabel();
            label.setIcon(new ImageIcon(image));
            frame.getContentPane().add(label,BorderLayout.CENTER);
            frame.setLocationRelativeTo(null);
            frame.pack();
            frame.setVisible(true);
        }else label.setIcon(new ImageIcon(image));
    }

    public static BufferedImage resize(BufferedImage img, int newW, int newH) { 
        Image tmp = img.getScaledInstance(newW, newH, Image.SCALE_SMOOTH);
        BufferedImage dimg = new BufferedImage(newW, newH, BufferedImage.TYPE_INT_ARGB);
    
        Graphics2D g2d = dimg.createGraphics();
        g2d.drawImage(tmp, 0, 0, null);
        g2d.dispose();
    
        return dimg;
    }

}