Java Code Examples for org.bytedeco.javacv.CanvasFrame#showImage()

public static void main(String[] args) throws Exception {
        CanvasFrame frame = new CanvasFrame("Virtual Ball Test");
        OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
        IplImage image = IplImage.create(640, 960, IPL_DEPTH_8U, 3);
        cvSetZero(image);
        double[] roiPts = { 0,0, 640,0, 640,480, 0,400 };
        cvFillConvexPoly(image, new CvPoint(4).put((byte)16, roiPts), roiPts.length/2, CvScalar.WHITE, CV_AA, 16);
        VirtualBall virtualBall = new VirtualBall(new Settings(roiPts));

        for (int i = 0; i < 1000; i++) {
            Thread.sleep(100);
            cvSetZero(image);
            if (i == 50) {
                roiPts[5] -= 100;
            }
            if (i > 100 && i < 1200) {
                roiPts[3] += 1;
                roiPts[5] += 1;
            }
//if (i > 103) {
//    System.out.println(i);
//}
            cvFillConvexPoly(image, new CvPoint(4).put((byte)16, roiPts), roiPts.length/2, CvScalar.WHITE, CV_AA, 16);
            virtualBall.draw(image, roiPts);
            frame.showImage(converter.convert(image));
        }
    }
 

public static void main(String[] args) throws Exception {
    CanvasFrame frame = new CanvasFrame("Chronometer Test");
    OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
    IplImage image = IplImage.create(640, 480, IPL_DEPTH_8U, 3);
    cvSetZero(image);
    Chronometer chronometer = new Chronometer(new Rectangle(100, 100, 100, 100), image);

    for (int i = 0; i < 1000; i++) {
        Thread.sleep(100);
        cvSetZero(image);
        chronometer.draw(image);
        frame.showImage(converter.convert(image));
    }
}
 

/**
 * 转流器
 * 
 * @param inputFile
 * @param outputFile
 * @throws Exception
 * @throws org.bytedeco.javacv.FrameRecorder.Exception
 * @throws InterruptedException
 */
public static void recordPush(String inputFile, int v_rs) throws Exception, org.bytedeco.javacv.FrameRecorder.Exception, InterruptedException {
	Loader.load(opencv_objdetect.class);
	long startTime = 0;
	FrameGrabber grabber = FFmpegFrameGrabber.createDefault(inputFile);
	try {
		grabber.start();
	} catch (Exception e) {
		try {
			grabber.restart();
		} catch (Exception e1) {
			throw e;
		}
	}

	OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
	Frame grabframe = grabber.grab();
	IplImage grabbedImage = null;
	if (grabframe != null) {
		System.out.println("取到第一帧");
		grabbedImage = converter.convert(grabframe);
	} else {
		System.out.println("没有取到第一帧");
	}

	System.out.println("开始推流");
	CanvasFrame frame = new CanvasFrame("camera", CanvasFrame.getDefaultGamma() / grabber.getGamma());
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	frame.setAlwaysOnTop(true);
	while (frame.isVisible() && (grabframe = grabber.grab()) != null) {
		System.out.println("推流...");
		frame.showImage(grabframe);
		grabbedImage = converter.convert(grabframe);
		Frame rotatedFrame = converter.convert(grabbedImage);

		if (startTime == 0) {
			startTime = System.currentTimeMillis();
		}

		Thread.sleep(40);
	}
	frame.dispose();

	grabber.stop();
	System.exit(2);
}
 

public static void show(Mat mat, String title) {
    OpenCVFrameConverter.ToMat converter = new OpenCVFrameConverter.ToMat();
    CanvasFrame canvas = new CanvasFrame(title, 1);
    canvas.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    canvas.showImage(converter.convert(mat));
}
 

public static void show(Image image, String title) {
    CanvasFrame canvas = new CanvasFrame(title, 1);
    canvas.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    canvas.showImage(image);
}
 

public static void main(String[] args) throws Exception {
//        Logger.getLogger("org.bytedeco.javacv").setLevel(Level.OFF);

//        String objectFilename = args.length == 2 ? args[0] : "/home/jiii/sketchbook/libraries/PapARt/data/markers/dlink.png";
        String objectFilename = args.length == 2 ? args[0] : "/home/jiii/repos/Papart-github/papart-examples/Camera/ExtractPlanarObjectForTracking/ExtractedView.bmp";
        String sceneFilename = args.length == 2 ? args[1] : "/home/jiii/my_photo-7.jpg";

        IplImage object = cvLoadImage(objectFilename, CV_LOAD_IMAGE_GRAYSCALE);
        IplImage image = cvLoadImage(sceneFilename, CV_LOAD_IMAGE_GRAYSCALE);
        if (object == null || image == null) {
            System.err.println("Can not load " + objectFilename + " and/or " + sceneFilename);
            System.exit(-1);
        }

        IplImage objectColor = IplImage.create(object.width(), object.height(), 8, 3);
        cvCvtColor(object, objectColor, CV_GRAY2BGR);

        IplImage correspond = IplImage.create(image.width(), object.height() + image.height(), 8, 1);
        cvSetImageROI(correspond, cvRect(0, 0, object.width(), object.height()));
        cvCopy(object, correspond);
        cvSetImageROI(correspond, cvRect(0, object.height(), correspond.width(), correspond.height()));
        cvCopy(image, correspond);
        cvResetImageROI(correspond);

        ObjectFinder.Settings settings = new ObjectFinder.Settings();
        settings.objectImage = object;
        settings.useFLANN = true;
        settings.ransacReprojThreshold = 5;
        ObjectFinder finder = new ObjectFinder(settings);

        long start = System.currentTimeMillis();
        double[] dst_corners = finder.find(image);
//        System.out.println("Finding time = " + (System.currentTimeMillis() - start) + " ms");

        if (dst_corners != null) {
            for (int i = 0; i < 4; i++) {
                int j = (i + 1) % 4;
                int x1 = (int) Math.round(dst_corners[2 * i]);
                int y1 = (int) Math.round(dst_corners[2 * i + 1]);
                int x2 = (int) Math.round(dst_corners[2 * j]);
                int y2 = (int) Math.round(dst_corners[2 * j + 1]);
                line(cvarrToMat(correspond), new Point(x1, y1 + object.height()),
                        new Point(x2, y2 + object.height()),
                        Scalar.WHITE, 1, 8, 0);
            }
        }

        for (int i = 0; i < finder.ptpairs.size(); i += 2) {
            Point2f pt1 = finder.objectKeypoints.get(finder.ptpairs.get(i)).pt();
            Point2f pt2 = finder.imageKeypoints.get(finder.ptpairs.get(i + 1)).pt();
            line(cvarrToMat(correspond), new Point(Math.round(pt1.x()), Math.round(pt1.y())),
                    new Point(Math.round(pt2.x()), Math.round(pt2.y() + object.height())),
                    Scalar.WHITE, 1, 8, 0);
        }

        CanvasFrame objectFrame = new CanvasFrame("Object");
        CanvasFrame correspondFrame = new CanvasFrame("Object Correspond");
        OpenCVFrameConverter converter = new OpenCVFrameConverter.ToIplImage();

        correspondFrame.showImage(converter.convert(correspond));
        for (int i = 0; i < finder.objectKeypoints.size(); i++) {
            KeyPoint r = finder.objectKeypoints.get(i);
            Point center = new Point(Math.round(r.pt().x()), Math.round(r.pt().y()));
            int radius = Math.round(r.size() / 2);
            circle(cvarrToMat(objectColor), center, radius, Scalar.RED, 1, 8, 0);
        }
        objectFrame.showImage(converter.convert(objectColor));

        objectFrame.waitKey();

        objectFrame.dispose();
        correspondFrame.dispose();
    }