线程“主”中的异常java.lang.UnsatisfiedLinkError：java.library.path中没有jniopencv_core

Question

我正在尝试如何使用marvin框架激活网络摄像头和捕获视频。我安装了javacv和opencv，但仍然遇到异常。我不知道这是由于opencv和javacv的版本问题还是什么引起的。希望你们能提供帮助。

这里是例外：

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopencv_core in java.library.path

以及此消息：

SETUP: Setting up device 0
SETUP: HP Webcam
SETUP: Couldn't find preview pin using SmartTee
SETUP: Default Format is set to 640 by 360 
SETUP: trying requested format RGB24 @ 640 by 480
SETUP: Capture callback set
SETUP: Device is setup and ready to capture.

'

这是我的代码：

public class SimpleVideoTest extends JFrame implements Runnable{

private MarvinVideoInterface    videoAdapter;
private MarvinImage             image;
private MarvinImagePanel        videoPanel;

public SimpleVideoTest(){
    super("Simple Video Test");

    // Create the VideoAdapter and connect to the camera
    MarvinVideoInterface  videoAdapter = new MarvinJavaCVAdapter();
    try {
        videoAdapter.connect(0);
    } catch (MarvinVideoInterfaceException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    // Create VideoPanel
    videoPanel = new MarvinImagePanel();
    add(videoPanel);

    // Start the thread for requesting the video frames 
    new Thread(this).start();

    setSize(800,600);
    setVisible(true);
}

public static void main(String[] args) {
    SimpleVideoTest t = new SimpleVideoTest();
    t.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

 @Override
public void run() {
    while(true){
        // Request a video frame and set into the VideoPanel
        try {
            image = videoAdapter.getFrame();
        } catch (MarvinVideoInterfaceException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        videoPanel.setImage(image);
    }
}

Answer 1

您究竟如何启动Java应用程序？

openCV有一个本机库（请参阅this doc，指的是libopencv_java * .so / dll）该本地库必须位于要启动的JVM的类路径上。

有关详细信息，请参见this similar question