Example usage for org.opencv.core MatOfByte toArray

Introduction

In this page you can find the example usage for org.opencv.core MatOfByte toArray.

Prototype

public byte[] toArray() 

Source Link

Usage

From source file:ImageReade.java

/**
 * Shows given image in a window. Analogous to cv::imshow() of C++ API.
 *
 * @param title/*from w w w . ja  va  2  s.  c  om*/
 * @param img
 */
public static void imshow(String title, Mat img) {

    // Convert image Mat to a jpeg
    MatOfByte imageBytes = new MatOfByte();
    Highgui.imencode(".jpg", img, imageBytes);

    try {
        // Put the jpeg bytes into a JFrame window and show.
        JFrame frame = new JFrame(title);
        frame.getContentPane()
                .add(new JLabel(new ImageIcon(ImageIO.read(new ByteArrayInputStream(imageBytes.toArray())))));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:frmMain.java

public static void showResult(Mat img) {
    Imgproc.resize(img, img, new Size(640, 480));
    MatOfByte matOfByte = new MatOfByte();
    Highgui.imencode(".jpg", img, matOfByte);
    byte[] byteArray = matOfByte.toArray();
    BufferedImage bufImage = null;
    try {/*from  w ww.j  ava 2s.c  om*/
        InputStream in = new ByteArrayInputStream(byteArray);
        bufImage = ImageIO.read(in);
        JFrame frame = new JFrame();
        frame.getContentPane().add(new JLabel(new ImageIcon(bufImage)));
        frame.pack();
        frame.setVisible(true);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:M.java

/**
 * Call the real-time camera and resize the image to the size of
 * WIDTH*HEIGHT. The resized image is stored in the folder "img_resized".
 *
 * @throws Exception//from w  w w  .ja v a  2  s .co m
 */
public static String realtimeCamera() throws Exception {
    System.out.println("Camera is called!");
    String destPath = "";
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
    //or ...     System.loadLibrary("opencv_java244");       
    //make the JFrame
    JFrame frame = new JFrame("WebCam Capture - Face detection");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    FaceDetector fd = new FaceDetector();
    FacePanel facePanel = new FacePanel();

    frame.setSize(400, 400);
    frame.setBackground(Color.BLUE);
    frame.add(facePanel, BorderLayout.CENTER);
    //        
    frame.setVisible(true);
    facePanel.setVisible(true);
    facePanel.validate();

    //        Thread t = new Thread();
    //Open and Read from the video stream  
    Mat webcam_image = new Mat();
    VideoCapture webCam = new VideoCapture(0);
    if (webCam.isOpened()) {
        //            Thread.sleep(500); /// This one-time delay allows the Webcam to initialize itself  
        while (M.flag) {
            webCam.read(webcam_image);
            if (!webcam_image.empty()) {
                //                    Thread.sleep(200); /// This delay eases the computational load .. with little performance leakage
                System.out.println("CAMERA: " + Thread.currentThread());
                frame.setSize(webcam_image.width() + 40, webcam_image.height() + 60);
                //Apply the classifier to the captured image  
                Mat temp = webcam_image;
                temp = fd.detect(webcam_image);
                //Display the image --------BUG
                facePanel.matToBufferedImage(temp);
                System.out.println("Image buffered!");
                facePanel.repaint();
                System.out.println("Panel repainted!");
                System.out.println(facePanel.isVisible());
                //                    System.out.println("visibility:"+facePanel.isVisible());//true
                //                    System.out.println("enabled?"+facePanel.isEnabled());//true
                //                    System.out.println("validity?"+facePanel.isValid());//true
                MatOfByte mb = new MatOfByte();
                Highgui.imencode(".jpg", webcam_image, mb);
                BufferedImage image = ImageIO.read(new ByteArrayInputStream(mb.toArray()));
                destPath = "build\\classes\\cam_img\\capture.jpg";
                File file = new File(destPath);
                ImageIO.write(image, "JPEG", file);

            } else {
                System.out.println(" --(!) No captured frame from webcam !");
                break;
            }
        }
    }
    webCam.release(); //release the webcam
    String imgPath = resize(destPath);
    flag = true;
    frame.dispose();
    return imgPath;
}

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From source file:bikecalibration.Utils.java

/**
 * Convert OpenCV Mat to JavaFX Image (using bmp)
 *
 * @param img/*from   ww w.  j  a v  a 2s  .  c  o m*/
 * @return
 */
public static Image matToImage(Mat img) {
    MatOfByte byteMat = new MatOfByte();
    Imgcodecs.imencode("*.bmp", img, byteMat);
    return new Image(new ByteArrayInputStream(byteMat.toArray()));
}

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From source file:br.com.prj.TelaPrincipal.java

/**
 * Converte um Mat em Image//from  w ww  .j a v a  2s.c  o m
 *
 * @param m
 * @return new Image()
 */
public Image convertMatToImage(Mat m) {
    MatOfByte bytemat = new MatOfByte();
    Imgcodecs.imencode(".jpg", m, bytemat);
    byte[] bytes = bytemat.toArray();
    InputStream in = new ByteArrayInputStream(bytes);
    try {
        return ImageIO.read(in);
    } catch (IOException ex) {
        Logger.getLogger(TelaPrincipal.class.getName()).log(Level.SEVERE, null, ex);
        return null;
    }
}

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From source file:carmelo.CameraTask.java

private Image createImageFromMat(Mat src) {
    MatOfByte dst = new MatOfByte();
    Imgcodecs.imencode(".bmp", src, dst);
    return new Image(new ByteArrayInputStream(dst.toArray()));
}

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From source file:cctvanalization.FXMLDocumentController.java

private Image grabFrame() {
    if (applicationShouldClose) {
        if (videoCapture.isOpened()) {
            videoCapture.release();//from   w  ww.  ja v a2 s . c  o  m
        }
        scheduledExecutorService.shutdown();
    }

    Image imageToShow = null;
    Mat frame = new Mat();
    //     Mat prevFrame = new Mat(grabbedImagesPrev.get(grabbedImagesPrev.size() - 1));
    int frameNum = 0;
    if (videoCapture.isOpened()) {
        try {
            videoCapture.read(frame);

            if (!frame.empty()) {
                Imgproc.cvtColor(frame, frame, Imgproc.COLOR_BGR2GRAY);

                MatOfByte buffer = new MatOfByte();
                Imgcodecs.imencode(".png", frame, buffer);
                imageToShow = new Image(new ByteArrayInputStream(buffer.toArray()));

                grabbedFramesTemp.removeAll(grabbedFramesTemp);
                if (grabbedFramesPrev.size() < 10) {
                    grabbedFramesPrev.add(frame);
                } else {
                    for (int i = 1; i < grabbedFramesPrev.size(); i++) {
                        grabbedFramesTemp.add(grabbedFramesPrev.get(i));
                    }
                    grabbedFramesPrev.removeAll(grabbedFramesPrev);
                    for (int i = 0; i < grabbedFramesTemp.size(); i++) {
                        grabbedFramesPrev.add(grabbedFramesTemp.get(i));
                    }
                    grabbedFramesPrev.add(frame);
                }
            }

        } catch (Exception e) {
            System.err.println(e);
        }
    }

    return imageToShow;
}

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From source file:Clases.Segmentador.java

public Image convertir(Mat imagen) {
    MatOfByte matOfByte = new MatOfByte();
    Highgui.imencode(".jpg", imagen, matOfByte);

    byte[] byteArray = matOfByte.toArray();
    BufferedImage bufImage = null;

    try {// w w  w  . j  a v  a 2 s .c o  m

        InputStream in = new ByteArrayInputStream(byteArray);
        bufImage = ImageIO.read(in);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return (Image) bufImage;
}

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From source file:classes.ObjectFinder.java

public static void imshow(Mat img, String title) {
    MatOfByte matOfByte = new MatOfByte();
    Highgui.imencode(".jpg", img, matOfByte);
    byte[] byteArray = matOfByte.toArray();
    BufferedImage bufImage = null;
    try {//from w  w w. j a  v  a2s  . c om
        InputStream in = new ByteArrayInputStream(byteArray);
        bufImage = ImageIO.read(in);
        JFrame frame = new JFrame(title);
        frame.getContentPane().add(new JLabel(new ImageIcon(bufImage)));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:com.armeniopinto.stress.control.vision.VisionAgent.java

public byte[] getCapturedFrame() {
    final MatOfByte frameBytes = new MatOfByte();
    synchronized (capturedFrame) {
        Imgcodecs.imencode(".jpg", capturedFrame, frameBytes);
    }// w  w  w .ja va 2  s .  co  m
    final byte[] bytes = frameBytes.toArray();
    frameBytes.release();

    return bytes;
}

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