Salvare immagine in maniera sequenziale

[Jervys]

/**
 *
 * @author Jervys
 */

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import org.opencv.core.*;
import org.opencv.highgui.Highgui;        
import org.opencv.highgui.VideoCapture;      
import java.awt.image.BufferedImage;
import org.opencv.imgproc.Imgproc;

public class fotoice extends JFrame implements ActionListener{
    /**
     * 
     */
    
    JPanel pista1;
    JPanel pista2;
    JPanel GUI;
    JButton btpista1;
    JButton btpista2;
    JLabel label;
    
    public fotoice(){
        pista1 = new JPanel();
        pista2 = new JPanel();
        
        btpista1 = new JButton("Scatta Foto Pista 1");
        btpista1.addActionListener(this);
        
        btpista2 = new JButton("Scatta Foto Pista 2");
        btpista2.addActionListener(this);
        
        GUI = new JPanel();
        
        GUI.add(pista1);
        GUI.add(pista2);
        GUI.add(btpista1);
        GUI.add(btpista2);
        this.add(GUI);
    }
        public static void main (String[] args) {
        fotoice prova =new fotoice();
        prova.setTitle("Foto Ice");
        prova.setSize(600,100);
        prova.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        prova.setVisible(true);
        }        

    @Override
    public void actionPerformed(ActionEvent event) {
    if(event.getSource()==btpista1)
    {
      System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
        VideoCapture camera = new VideoCapture(0);
        
        if(!camera.isOpened()){
            System.out.println("Error");
        }
        else {
            Mat frame = new Mat();
            while(true){
                if (camera.read(frame)){
                    System.out.println("Frame Obtained");
                    System.out.println("Captured Frame Width " + 
                    frame.width() + " Height " + frame.height());
                    Highgui.imwrite("camera0.jpg", frame);
                    System.out.println("OK");
                    break;
                }
            }    
        }
        camera.release();
    }
    if(event.getSource()==btpista2){
           System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
        VideoCapture camera = new VideoCapture(1);
        
        if(!camera.isOpened()){
            System.out.println("Error");
        }
        else {
            Mat frame = new Mat();
            while(true){
                if (camera.read(frame)){
                    System.out.println("Frame Obtained");
                    System.out.println("Captured Frame Width " + 
                    frame.width() + " Height " + frame.height());
                    Highgui.imwrite("camera1.jpg", frame);
                    System.out.println("OK");
                    break;
                }
            }    
        }
        camera.release();
    }
  }
}

questa è la classe interessata.