问javacv代码未运行

EN

import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_highgui.*;
import com.googlecode.javacv.CanvasFrame;

public class demo {

    public static void main(String[] args) {

     //Load image img1 as IplImage
        final IplImage image = cvLoadImage("backimg.png");

        //create canvas frame named 'Demo'
        final CanvasFrame canvas = new CanvasFrame("Demo");

        //Show image in canvas frame
        canvas.showImage(image);

        //This will close canvas frame on exit
        canvas.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);        
    }    
}