我正在运行cod e以使用LTI-CIVIL库捕获图像。
这是代码...
public class TestWebCam implements CaptureObserver {
JButton start = null;
JButton shot = null;
JButton stop = null;
CaptureStream captureStream = null;
boolean takeShot = false;
public TestWebCam() {
CaptureSystemFactory factory = DefaultCaptureSystemFactorySingleton.instance();
CaptureSystem system;
try {
system = factory.createCaptureSystem();
system.init();
List list = system.getCaptureDeviceInfoList();
int i = 0;
if (i < list.size()) {
CaptureDeviceInfo info = (CaptureDeviceInfo) list.get(i);
System.out.println((new StringBuilder()).append("Device ID ").append(i).append(": ").append(info.getDeviceID()).toString());
System.out.println((new StringBuilder()).append("Description ").append(i).append(": ").append(info.getDescription()).toString());
captureStream = system.openCaptureDeviceStream(info.getDeviceID());
captureStream.setObserver(TestWebCam.this);
}
} catch (CaptureException ex) {
ex.printStackTrace();
}
//UI work of the program
JFrame frame = new JFrame();
frame.setSize(7000, 800);
JPanel panel = new JPanel();
frame.setContentPane(panel);
frame.setVisible(true);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
start = new JButton("Start");
stop = new JButton("Stop");
shot = new JButton("Shot");
panel.add(start);
panel.add(stop);
panel.add(shot);
panel.revalidate();
start.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
captureStream.start();
} catch (CaptureException ex) {
ex.printStackTrace();
}
}
});
stop.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
captureStream.stop();
} catch (CaptureException ex) {
ex.printStackTrace();
}
}
});
shot.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
takeShot = true;
}
});
}
public void onNewImage(CaptureStream stream, Image image) {
if (!takeShot) {
return;
}
takeShot = false;
System.out.println("New Image Captured");
byte bytes[] = null;
try {
if (image == null) {
bytes = null;
return;
}
try {
ByteArrayOutputStream os = new ByteArrayOutputStream();
JPEGImageEncoder jpeg = JPEGCodec.createJPEGEncoder(os);
jpeg.encode(AWTImageConverter.toBufferedImage(image));
os.close();
bytes = os.toByteArray();
} catch (IOException e) {
e.printStackTrace();
bytes = null;
} catch (Throwable t) {
t.printStackTrace();
bytes = null;
}
if (bytes == null) {
return;
}
ByteArrayInputStream is = new ByteArrayInputStream(bytes);
File file = new File("/img" + Calendar.getInstance().getTimeInMillis() + ".jpg");
FileOutputStream fos = new FileOutputStream(file);
fos.write(bytes);
fos.close();
BufferedImage myImage = ImageIO.read(file);
shot.setText("");
shot.setIcon(new ImageIcon(myImage));
shot.revalidate();
} catch (IOException ex) {
ex.printStackTrace();
}
}
public void onError(CaptureStream arg0, CaptureException arg1) {
throw new UnsupportedOperationException("Error is coming ");
}
public static void main(String args[])
throws Exception {
TestWebCam test = new TestWebCam();
}
}
我收到一个错误...
com.lti.civil.CaptureException: java.lang.UnsatisfiedLinkError: no civil in java.library.path
at com.lti.civil.impl.jni.NativeCaptureSystemFactory.createCaptureSystem(NativeCaptureSystemFactory.java:24)
at attendance.TestWebCam.<init>(TestWebCam.java:51)
at attendance.TestWebCam.main(TestWebCam.java:160)
Caused by: java.lang.UnsatisfiedLinkError: no civil in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1860)
at java.lang.Runtime.loadLibrary0(Runtime.java:845)
at java.lang.System.loadLibrary(System.java:1084)
at com.lti.civil.impl.jni.NativeCaptureSystemFactory.createCaptureSystem(NativeCaptureSystemFactory.java:21)
... 2 more
最佳答案
得到了解决方案..
我的是64位计算机，为此，我们需要将civil.dll粘贴到syswow64文件夹中，而不是粘贴到system32中。
关于java - 使用LTI-CIVIL库从网络摄像头捕获图像，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15861234/