java swing 人脸签到系统 ----- 调用 opencv 多线程

开始签到Button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                new Thread(() -> readImage()).start();
            }
        });

// 获取 图片的 io 工作进程
    public void readImage() {
        VideoLabel.setText("请等待打开摄像头");
        capture.open(0);
        openVideo = 0;
        // 设置帧率
        capture.set(Videoio.CAP_PROP_FPS, 30);
        boolean grab = capture.grab();
        if (!grab) {
            return;
        }
        int take_count = 0;
        while (true) {
            Mat capImg = new Mat();
            BufferedImage tempImage;
            if (openVideo == -1) {
                capture.release();
                break;
            }
            capture.read(capImg);
            tempImage = CvFunc.MatToBufferedImage(capImg);
            if (tempImage != null) {
                updateVideoLabel(new ImageIcon(tempImage));
                take_count += 1;
                if (take_count == 20) {
                    take_count = 0;
                    new Thread(() -> {
                        String[] res = studentInfo.compareImage(tempImage);
                        updateCompareRes(res);
                        studentInfo.Checkin(res[0]);
                        String spring_str = studentInfo.GetSpringStuStr();
                        String absent_str = studentInfo.GetAbsentStuStr();
                        updateStudentList(spring_str, absent_str);
                    }).start();
                }
            }
            try {
                sleep(50);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
// 页面渲染进程
    public void updateCompareRes(String[] s_list) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                compareRes.setText(s_list[0]);
                compareVal.setText(s_list[1]);
            }
        });
    }
// 页面渲染进程
    public void updateVideoLabel(ImageIcon imageIcon) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                VideoLabel.setText("");
                VideoLabel.setIcon(imageIcon);
            }
        });
    }