Java编程，opencv未满足链接错误

Question

OpenCV 库在捕获视频流时出现不令人满意的链接错误。

opencv 3.2.0 库应该在哪里？ opencv类包的正确路径是什么？

代码在哪里生成此错误:

package opencv;

import org.opencv.core.*; 

import org.opencv.imgcodecs.Imgcodecs;        
import org.opencv.videoio.VideoCapture;     
public class VideoCap 
{

    public static void main (String args[]){

        System.loadLibrary(Core.NATIVE_LIBRARY_NAME); // error

        VideoCapture camera = new VideoCapture(0);

        if(!camera.isOpened()){
            System.out.println("Error");
        }
    else {
            Mat frame = new Mat();
            while(true){
                if (camera.read(frame)){
                    System.out.println("Frame Obtained");
                    System.out.println("Captured Frame Width " + 
                    frame.width() + " Height " + frame.height());
                    Imgcodecs.imwrite("camera.jpg", frame);
                    System.out.println("OK");
                    break;
                }
            }   
        }
        camera.release();
    }
}

异常(exception)情况是:

Exception in thread "main" java.lang.UnsatisfiedLinkError:
    no opencv_java320 in java.library.path
    at java.lang.ClassLoader.loadLibrary(Unknown Source)
    at java.lang.Runtime.loadLibrary0(Unknown Source)
    at java.lang.System.loadLibrary(Unknown Source)
    at opencv.VideoCap.main(VideoCap.java:9)

Answer 1

尝试克隆以下存储库:

https://github.com/hellonico/opencv4_java_tutorial.git

在 java 文件夹中添加您的类，而不是使用 System.loadLibrary ...使用:

NativeLoader.loadLibrary(Core.NATIVE_LIBRARY_NAME);

这将加载正确编译的 OpenCV 版本以在 JVM 中运行。