Example usage for org.opencv.core Mat Mat

Introduction

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

Prototype

public Mat(Mat m, Range rowRange, Range colRange) 

Source Link

Usage

From source file:MainEroding.java

public static void main(String[] args) {

    try {//from  ww w.jav a2 s  .c  om

        int erosion_size = 2;
        //int dilation_size = 5;

        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

        Mat source = Highgui.imread("D://teste.png", Highgui.CV_LOAD_IMAGE_COLOR);

        Mat destination = new Mat(source.rows(), source.cols(), source.type());

        destination = source;

        Mat element = Imgproc.getStructuringElement(Imgproc.MORPH_RECT,
                new Size(2 * erosion_size + 1, 2 * erosion_size + 1));

        Imgproc.erode(source, destination, element);

        Highgui.imwrite("D://Erosion.jpg", destination);

    } catch (Exception e) {
        System.out.println("Exception: " + e.getMessage());
    }

}

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From source file:MainGaussian.java

public static void main(String[] args) {

    try {//from  ww w  .  ja v  a  2s . c  o  m
        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

        Mat source = Highgui.imread("D://teste.png", Highgui.CV_LOAD_IMAGE_COLOR);

        Mat destination = new Mat(source.rows(), source.cols(), source.type());

        Imgproc.GaussianBlur(source, destination, new Size(45, 45), 0);
        //Imgproc.GaussianBlur(source, destination, new Size(65,65), 0);
        //Imgproc.GaussianBlur(source, destination, new Size(25,1), 0);
        Highgui.imwrite("D://Gaussian45.jpg", destination);

    } catch (Exception e) {
        System.out.println("Exception: " + e.getMessage());
    }
}

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From source file:OCV_HoughLines.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    // src//  w  w w .  j  a  v a2s . co  m
    int imw = ip.getWidth();
    int imh = ip.getHeight();
    byte[] src_ar = (byte[]) ip.getPixels();

    // mat
    Mat src_mat = new Mat(imh, imw, CvType.CV_8UC1);
    Mat dst_lines = new Mat();

    // run
    src_mat.put(0, 0, src_ar);

    double resAng = CV_PI / resAngFact;
    double minTheta = CV_PI / 360.0 * minDeg;
    double maxTheta = CV_PI / 360.0 * maxDeg;
    Imgproc.HoughLines(src_mat, dst_lines, resDist, resAng, minVotes, divDist, divAng, minTheta, maxTheta);

    // fin
    showData(dst_lines, imw, imh);
}

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From source file:OCV_AdaptiveThreshold.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    int imw = ip.getWidth();
    int imh = ip.getHeight();

    // srcdst/*from   www . ja v  a  2  s . c om*/
    byte[] srcdst_ar = (byte[]) ip.getPixels();

    // mat
    Mat src_mat = new Mat(imh, imw, CvType.CV_8UC1);
    Mat dst_mat = new Mat(imh, imw, CvType.CV_8UC1);

    // run
    src_mat.put(0, 0, srcdst_ar);
    Imgproc.adaptiveThreshold(src_mat, dst_mat, maxValue, INT_ADAPTIVEMETHOD[indMethod],
            INT_THRESHOLDTYPE[indType], blockSize, subC);
    dst_mat.get(0, 0, srcdst_ar);
}

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From source file:MainShapeConversion.java

public static void main(String[] args) {

    try {//  w  ww  .  j  a v  a2  s.c o m

        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

        File input = new File("D://teste.png");

        BufferedImage image = ImageIO.read(input);

        byte[] data = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();

        Mat mat = new Mat(image.getHeight(), image.getWidth(), CvType.CV_8UC3);

        mat.put(0, 0, data);

        Mat mat1 = new Mat(image.getWidth(), image.getHeight(), CvType.CV_8UC3);

        Core.flip(mat, mat1, -1); //-1 invert , 1 normal

        byte[] data1 = new byte[mat1.rows() * mat1.cols() * (int) (mat1.elemSize())];

        mat1.get(0, 0, data1);

        BufferedImage image1 = new BufferedImage(mat1.cols(), mat1.rows(), 5);

        image1.getRaster().setDataElements(0, 0, mat1.cols(), mat1.rows(), data1);

        File output = new File("D://hsv.jpg");

        ImageIO.write(image1, "jpg", output);

    } catch (Exception e) {
        System.out.println("Exception: " + e.getMessage());

    }
}

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From source file:MainThresholding.java

public static void main(String[] args) {
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

    try {/*from   w  ww .  jav a  2s. c  om*/

        Mat source = Highgui.imread("D://teste.png", Highgui.CV_LOAD_IMAGE_COLOR);

        Mat destination = new Mat(source.rows(), source.cols(), source.type());

        destination = source;

        //Imgproc.threshold(source, destination, 125, 255, Imgproc.THRESH_TOZERO);
        //Imgproc.threshold(source, destination, 125, 255, Imgproc.THRESH_BINARY);
        //Imgproc.threshold(source, destination, 125, 255, Imgproc.THRESH_BINARY_INV);
        //Imgproc.threshold(source, destination, 125, 255, Imgproc.THRESH_TOZERO_INV);
        Imgproc.threshold(source, destination, 125, 255, Imgproc.THRESH_TRUNC);

        Highgui.imwrite("D://ThreshZero.jpg", destination);

    } catch (Exception e) {
        System.out.println("Exception: " + e.getMessage());
    }

}

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From source file:PutFiltro.java

public static Mat mainBorda(Mat source) {
    Mat destination = new Mat(source.rows(), source.cols(), source.type());
    try {/* www.  j  a  va  2 s.c o m*/

        //System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

        /*
             Mat source = Highgui.imread("D:\\teste.png",
        Highgui.CV_LOAD_IMAGE_COLOR);
        */

        int top, bottom, left, right;

        int borderType;

        //initialize arguments for the filter border

        top = (int) (0.05 * source.rows());
        bottom = (int) (0.05 * source.rows());

        left = (int) (0.15 * source.cols());
        right = (int) (0.15 * source.cols());

        destination = source;

        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_WRAP); //borda com a imagem
        Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_CONSTANT); //borda preta
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_DEFAULT); //borda transparente
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_ISOLATED); // borda escura??
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_REFLECT); //borda com reflexo da prpria imagem
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_REFLECT101);
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_REFLECT_101);
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_REPLICATE); //borda efeito movimento
        //Imgproc.copyMakeBorder(source, destination, top, bottom, left, right, Imgproc.BORDER_TRANSPARENT); //borda no funciona

        //Highgui.imwrite("D:\\borderWrap.jpg", destination);

    } catch (Exception e) {
        System.out.println("Exception: " + e.getMessage());
    }
    return destination;
}

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From source file:ImagemScreen.java

public static void main(String[] args) throws InterruptedException, AWTException, IOException {

    JFrame f = new JFrame("Image Example");

    f.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);//from ww  w.  ja  v  a  2 s  .c om
        }
    });

    ImagemScreen si = new ImagemScreen();
    f.add("Center", si);

    //
    JComboBox choices = new JComboBox(si.getDescriptions());
    choices.setActionCommand("SetFilter");
    choices.addActionListener(si);

    //  
    JComboBox formats = new JComboBox(si.getFormats());
    formats.setActionCommand("Formats");
    formats.addActionListener(si);

    //
    JComboBox opcao = new JComboBox(si.getComando());
    opcao.setActionCommand("Escolher");
    opcao.addActionListener(si);

    //
    JPanel panel = new JPanel();
    panel.add(opcao);
    panel.add(choices);
    panel.add(new JLabel("Salvar como"));
    panel.add(formats);

    f.add("South", panel);
    f.pack();
    f.setVisible(true);

    System.loadLibrary(Core.NATIVE_LIBRARY_NAME); // load native library of opencv

    byte[] bgrPixelData = ImagemScreen.GetCurrentScreenImage();
    Mat screenFrame = new Mat(600, 600, CvType.CV_8UC3);
    screenFrame.put(0, 0, bgrPixelData);
    // Create a blank output image, that we will draw onto.
    Mat outputFrame = new Mat(screenFrame.size(), CvType.CV_8UC3);
    // Save output and display the openCV Mat image onto the screen.

    //Gravando imagem no disco
    try { //   ImageToScreen.DrawImageToScreen("c:\\temp\\wtf.png", outputFrame);
        BufferedImage teste = createBufferedImage(outputFrame);
        //Obtemos o contexto grfico dessa imagem
        Graphics2D g2d = teste.createGraphics();
        File outputfile = new File("f:\\saved.png");
        boolean write = ImageIO.write(teste, "png", outputfile);
        if (write) {
            System.out.println("Tudo OK!");
        }
        g2d.dispose();
    } catch (IOException e) {
        System.out.println("Error: " + e);
    }

    //Liberamos o contexto.
}

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From source file:Questao2.java

public Questao2() {
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
    this.in = new Scanner(System.in);
    this.output = new Mat(256, 26, CvType.CV_8UC3);
    this.img = "lena.jpg";
    this.image = Imgcodecs.imread(img);

    showResult(img);/*from   w  w w  . ja  v a2s  . c  om*/

    do {
        System.out.println("Escolha o rudo a ser aplicado: ");
        System.out.println("1 - Gaussiano");
        System.out.println("2 - Sal e Pimenta");
        System.out.println("0 - Sair");

        while ((ruido = in.nextInt()) != 0) {
            aplicarRuidos();
        }
        if (ruido == 0) {
            break;
        }
    } while (ruido < 0 || ruido > 8);

    do {
        System.out.println("Escolha o filtro a ser aplicado: ");
        System.out.println("1 - Mdia");
        System.out.println("2 - Mediana");
        System.out.println("3 - Gaussiano");
        System.out.println("4 - Mximo");
        System.out.println("5 - Mnimo");

        while ((filtro = in.nextInt()) != 0) {
            aplicarFiltros();
        }

        if (filtro == 0) {
            return;
        }

    } while (filtro < 0 || filtro > 5);
}

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From source file:Fiji_OpenCV.java

License:Creative Commons License

public void process(int[] pixels) {
    int channels = 3;
    byte[] buf = new byte[pixels.length * channels];
    for (int i = 0; i < pixels.length; i++) {
        buf[i * channels] = (byte) (0x000000ff & (pixels[i]));
        buf[i * channels + 1] = (byte) (0x000000ff & (pixels[i] >>> 8));
        buf[i * channels + 2] = (byte) (0x000000ff & (pixels[i] >>> 16));
    }//ww w  .j ava 2s  .com

    Mat image = new Mat(width, height, CvType.CV_8UC3);
    image.put(0, 0, buf);

    // Create a face detector from the cascade file in the resources
    // directory.
    CascadeClassifier faceDetector = new CascadeClassifier(
            getClass().getResource("/opencv/data/haarcascades/haarcascade_frontalface_alt2.xml").getPath());

    // Detect faces in the image.
    // MatOfRect is a special container class for Rect.
    MatOfRect faceDetections = new MatOfRect();
    faceDetector.detectMultiScale(image, faceDetections);

    System.out.println(String.format("Detected %s faces", faceDetections.toArray().length));

    // Draw a bounding box around each face.
    for (Rect rect : faceDetections.toArray()) {
        Core.rectangle(image, new Point(rect.x, rect.y), new Point(rect.x + rect.width, rect.y + rect.height),
                new Scalar(0, 255, 0));
    }

    image.get(0, 0, buf);
    for (int i = 0; i < pixels.length; i++) {
        pixels[i] = 0x80000000 + ((int) (buf[i * channels + 2]) << 16) + ((int) (buf[i * channels + 1]) << 8)
                + ((int) (buf[i * channels + 0]));
    }
    this.ip = new ColorProcessor(width, height, pixels);
}

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