如何在 Java 的 Swing 应用程序中集成网络摄像头？
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How to integrate Webcam in Swing application of Java?
提问by om.
I am creating one GUI application in swing Java.I have to integrate web cam with my GUI. Any body have idea about this ?
我正在用 Swing Java 创建一个 GUI 应用程序。我必须将网络摄像头与我的 GUI 集成。任何机构对此有想法吗？
回答by JRL
- Download and install JMF
- Add jmf.jar to your project libraries
- Download the FrameGrabbersource file and add it to your project
Use it as follows to start capturing video.
new FrameGrabber().start();
- 下载并安装JMF
- 将 jmf.jar 添加到您的项目库中
- 下载FrameGrabber源文件并将其添加到您的项目中
如下使用它开始捕获视频。
新的 FrameGrabber().start();
To get to the underlying image, you simply call getBufferedImage() on your FrameGrabber reference. You can do this in a Timer task for example, every 33 milliseconds.
要获取底层图像，您只需在 FrameGrabber 引用上调用 getBufferedImage() 即可。例如，您可以在 Timer 任务中执行此操作，每 33 毫秒执行一次。
Sample code:
示例代码：
public class TestWebcam extends JFrame {
private FrameGrabber vision;
private BufferedImage image;
private VideoPanel videoPanel = new VideoPanel();
private JButton jbtCapture = new JButton("Show Video");
private Timer timer = new Timer();
public TestWebcam() {
JPanel jpButton = new JPanel();
jpButton.setLayout(new FlowLayout());
jpButton.add(jbtCapture);
setLayout(new BorderLayout());
add(videoPanel, BorderLayout.CENTER);
add(jpButton, BorderLayout.SOUTH);
setVisible(true);
jbtCapture.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
timer.schedule(new ImageTimerTask(), 1000, 33);
}
}
);
}
class ImageTimerTask extends TimerTask {
public void run() {
videoPanel.showImage();
}
}
class VideoPanel extends JPanel {
public VideoPanel() {
try {
vision = new FrameGrabber();
vision.start();
} catch (FrameGrabberException fge) {
}
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (image != null)
g.drawImage(image, 10, 10, 160, 120, null);
}
public void showImage() {
image = vision.getBufferedImage();
repaint();
}
}
public static void main(String[] args) {
TestWebcam frame = new TestWebcam();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(190, 210);
frame.setVisible(true);
}
}
回答by Denis Tulskiy
Freedom for Media in Javais an alternative implementation of JMF (API compatible). Just in case you'd like to use OpenSource library.
