webSource = new VideoCapture(0);
                myThread = new DaemonThread();
                Thread t = new Thread(myThread);
                t.setDaemon(true);
                myThread.runnable = true;
                t.start();

            }

  myThread.runnable = false;
                webSource.release();



                        JFileChooser jFileChooser1 = new JFileChooser("./images");
                     int returnVal = jFileChooser1.showSaveDialog(this);

                    if(returnVal == JFileChooser.APPROVE_OPTION){
                         File  file = jFileChooser1.getSelectedFile().getAbsoluteFile();
                         String path = jFileChooser1.getSelectedFile().getAbsolutePath();
                          f = new File(file.toURI());
                         Highgui.imwrite(file.getPath(), frame);
                    }

                    FileInputStream fis;
        try {
            fis = new FileInputStream(f);
             ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    byte[] buf = new byte[1024];
                    for(int readNum; (readNum = fis.read(buf)) != -1;){
                        bos.write(buf, 0, readNum);
        }
     byte[] convict_image = bos.toByteArray();
        }catch (FileNotFoundException ex) {
            Logger.getLogger(cam.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(cam.class.getName()).log(Level.SEVERE, null, ex);
        }