Display IplImage (JavaCV) on an SWT canvas

I'm using JavaCV for a university project. It is essentially a motion detector.

I use the OpenCVFrameGrabber class to get the frames from a webcam and I want t开发者_如何转开发o display the grabbed frames on my GUI.

I'm using SWT and I thought it would be good to display the frames into a Canvas component. I have a problem because the OpenCVFrameGrabber provides images as instances of the IplImage class and SWT uses org.eclipse.swt.graphics.Image image class.

So I should convert the image someway from IplImage to SWT Image. What is the best way to do this?

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingWorker;

import com.googlecode.javacpp.Loader;
import com.googlecode.javacv.*;
import com.googlecode.javacv.cpp.*;
import static com.googlecode.javacv.cpp.opencv_core.*;

@SuppressWarnings("serial")
public class CFrameTest extends JFrame {
    JButton jbtStart;
    JButton jbtStop;
    CanvasFrame frame;
    FrameGrabber grabber;
    IplImage grabbedImage;
    public CFrameTest() {
        super("test");
        setSize(250, 100);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new GridLayout(1, 2));
        jbtStart = new JButton("Start camera");
        jbtStop = new JButton("Stop camera");
        this.add(jbtStart);
        this.add(jbtStop);
        setVisible(true);
        jbtStart.addActionListener(
                new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        System.out.println("Startcap");
                        jbtStart.setEnabled(false);
                        jbtStop.setEnabled(true);
                        try {

                            (new CameraSwingWorker()).execute();
                            /*startCamera();*/


                        } catch (Exception ex) {
                            Logger.getLogger(CFrameTest.class.getName()).log(Level.SEVERE, null, ex);
                        }
                    }
                });
        jbtStop.addActionListener(
                new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        System.out.println("Stopcap");
                        jbtStart.setEnabled(true);
                        jbtStop.setEnabled(false);
                        frame.setVisible(false);
                    }
                });
        Loader.load(opencv_objdetect.class);
    }
    public static void main(String[] args) {
        CFrameTest testFrame = new CFrameTest();
    }
    public void startCamera() throws Exception {
        frame = new CanvasFrame("Test");
        grabber = new OpenCVFrameGrabber(0);
        CvMemStorage storage = CvMemStorage.create();
        grabber.start();
        grabbedImage = grabber.grab();
        while (frame.isVisible() && (grabbedImage = grabber.grab()) != null)
        {
            BufferedImage bfimg = grabbedImage.getBufferedImage();
            //grabbedImage.copyTo(bfimg);
            frame.showImage(bfimg);

            //frame.showImage(grabbedImage);
            cvClearMemStorage(storage);
        }
        grabber.stop();
    }


    class CameraSwingWorker extends SwingWorker<String, Object> {
        @Override
        public String doInBackground() {
            try {
                startCamera();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return "yeah";
        }

        @Override
        protected void done() {
            try {} catch (Exception ignore) {
            }
        }
    }




}

/*javax.swing.SwingWorker*/

I recently converted BufferedImages (AWT) to SWT Image Objects. I made use of the following snippet: java2s.com

Maybe the code gets you started. Or someone already converted IplImages to BufferedImages, and you could "pipe" these two conversion methods.

Cheers