Example usage for org.opencv.core Mat cols

Introduction

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

Prototype

public int cols() 

Source Link

Usage

From source file:OCV_GetRotationMatrix2D.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    Mat mat = Imgproc.getRotationMatrix2D(new Point(center_x, center_y), angle, scale);

    if (mat == null || mat.rows() <= 0 || mat.cols() <= 0) {
        IJ.showMessage("Output is null or error");
        return;/*ww w  .  ja  v  a 2 s . c  om*/
    }

    ResultsTable rt = OCV__LoadLibrary.GetResultsTable(true);
    rt.incrementCounter();
    rt.addValue("Column01", String.valueOf(mat.get(0, 0)[0]));
    rt.addValue("Column02", String.valueOf(mat.get(0, 1)[0]));
    rt.addValue("Column03", String.valueOf(mat.get(0, 2)[0]));
    rt.incrementCounter();
    rt.addValue("Column01", String.valueOf(mat.get(1, 0)[0]));
    rt.addValue("Column02", String.valueOf(mat.get(1, 1)[0]));
    rt.addValue("Column03", String.valueOf(mat.get(1, 2)[0]));
    rt.show("Results");
}

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From source file:ImagetoPDF.java

public static void enhance(String fileName) throws IOException {

    Mat source = Imgcodecs.imread(fileName, Imgcodecs.CV_LOAD_IMAGE_COLOR);
    Mat destination = new Mat(source.rows(), source.cols(), source.type());
    //    Imgproc.cvtColor(source, destination, Imgproc.COLOR_BGR2GRAY);
    Imgproc.cvtColor(source, source, Imgproc.COLOR_BGR2GRAY);
    Mat imageMat = source;/*from   w  ww .  j  a  v a2  s .  c o m*/
    Imgproc.GaussianBlur(imageMat, imageMat, new Size(3, 3), 0);
    Imgproc.adaptiveThreshold(imageMat, imageMat, 255, Imgproc.ADAPTIVE_THRESH_MEAN_C, Imgproc.THRESH_BINARY, 5,
            4);
    Imgcodecs.imwrite(fileName, imageMat);
}

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From source file:MainBorder.java

public static void main(String[] args) {

    try {//from  w  w w .j av a 2 s .c  om

        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());

        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());
    }

}

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From source file:MainEroding.java

public static void main(String[] args) {

    try {/*  w w  w . ja va  2  s.  c  o  m*/

        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 {/*  w  w  w . j a  va  2s.c  om*/
        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());
    }
}

---

From source file:MainShapeConversion.java

public static void main(String[] args) {

    try {//from   ww w  .j av  a  2  s  .co  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:Video.java

public BufferedImage matToBufferedImage(Mat matrix) {
    int cols = matrix.cols();
    int rows = matrix.rows();
    int elemSize = (int) matrix.elemSize();
    byte[] data = new byte[cols * rows * elemSize];
    int type;//from w  w  w. j ava 2s. c  o m

    matrix.get(0, 0, data);

    switch (matrix.channels()) {
    case 1:
        type = BufferedImage.TYPE_BYTE_GRAY;
        break;

    case 3:
        type = BufferedImage.TYPE_3BYTE_BGR;

        // bgr to rgb
        byte b;
        for (int i = 0; i < data.length; i = i + 3) {
            b = data[i];
            data[i] = data[i + 2];
            data[i + 2] = b;
        }
        break;

    default:
        return null;
    }

    BufferedImage image = new BufferedImage(cols, rows, type);
    image.getRaster().setDataElements(0, 0, cols, rows, data);

    return image;
}

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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.  j  a v a 2  s . co m

        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 {//from   w ww.j a  va2  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:Questao2.java

void ruidoGaussiano() {
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

    Mat original_Bgr = image.clone();

    // cria uma imagem e inicializa com valores aleatorios
    Mat mGaussian_noise = new Mat(original_Bgr.size(), original_Bgr.type());
    System.out.print("Valor Principal: ");
    int mean = in.nextInt();
    System.out.print("Desvio Padro: ");
    int desv = in.nextInt();
    // randn(matriz destino, mean value, desvio padrao)
    randn(mGaussian_noise, mean, desv);//w  w  w.j av  a 2  s  .co m

    // aplicacao do ruido: original(clone) + mGaussian_noise
    for (int m = 0; m < original_Bgr.rows(); m++) {
        for (int n = 0; n < original_Bgr.cols(); n++) {
            double[] val = new double[3];
            for (int i = 0; i < original_Bgr.get(m, n).length; i++) {
                val[i] = original_Bgr.get(m, n)[i] + mGaussian_noise.get(m, n)[i];
            }
            original_Bgr.put(m, n, val);
        }
    }

    // normalize(matriz entrada, matriz saida, valor minimo, valor maximo, tipo de normalizacao, tipo da imagem de saida)
    normalize(original_Bgr, original_Bgr, 0, 255, Core.NORM_MINMAX, CvType.CV_8UC3);

    // salva resultado do ruido gaussiano na imagem "gaussian.jpg"
    Imgcodecs.imwrite("gaussian.jpg", original_Bgr);
    showResult("gaussian.jpg");
}

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