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:OCV_DistanceTransform.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    // srcdst//from   w w w  .  j a v a  2 s .c  o m
    int imw = ip.getWidth();
    int imh = ip.getHeight();
    float[] srcdst_floats = (float[]) ip.getPixels();

    // mat
    Mat src_mat_32f = new Mat(imh, imw, CvType.CV_32FC1);
    Mat src_mat_8u = new Mat(imh, imw, CvType.CV_8UC1);
    Mat dst_mat_32f = new Mat(imh, imw, CvType.CV_32FC1);

    // run
    src_mat_32f.put(0, 0, srcdst_floats);
    src_mat_32f.convertTo(src_mat_8u, CvType.CV_8UC1);
    Imgproc.distanceTransform(src_mat_8u, dst_mat_32f, INT_DISTANCETYPE[indDistType],
            INT_DISTANCETRANSFORMMASKS[indMskSize]);
    dst_mat_32f.get(0, 0, srcdst_floats);
}

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From source file:OCV_Watershed.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    // src (RGB)//from ww  w . j a va 2 s. c om
    int[] arr_src_rgb = (int[]) imp_src.getChannelProcessor().getPixels();
    int imw_src = imp_src.getWidth();
    int imh_src = imp_src.getHeight();
    Mat mat_src_rgb = new Mat(imh_src, imw_src, CvType.CV_8UC3);

    // map (32bit)
    float[] arr_map_32f = (float[]) imp_map.getChannelProcessor().getPixels();
    int imw_map = imp_map.getWidth();
    int imh_map = imp_map.getHeight();
    Mat mat_map_32f = new Mat(imh_map, imw_map, CvType.CV_32FC1);
    Mat mat_map_32s = new Mat(imh_map, imw_map, CvType.CV_32SC1);

    // run
    OCV__LoadLibrary.intarray2mat(arr_src_rgb, mat_src_rgb, imw_src, imh_src);
    mat_map_32f.put(0, 0, arr_map_32f);
    mat_map_32f.convertTo(mat_map_32s, CvType.CV_32SC1);

    Imgproc.watershed(mat_src_rgb, mat_map_32s);

    mat_map_32s.convertTo(mat_map_32f, CvType.CV_32FC1);
    mat_map_32f.get(0, 0, arr_map_32f);
}

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From source file:MainDilation.java

public static void main(String[] args) {

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

        //int erosion_size = 5;
        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 * dilation_size + 1, 2 * dilation_size + 1));

        Imgproc.dilate(source, destination, element);

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

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

}

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From source file:MainTextWatermark.java

public static void main(String[] args) {

    try {// w  w w. j  a  va2  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());

        Core.putText(source, "Tutorialspoint.com by DAC",
                new Point(source.rows() / 2, (source.cols() / 15 * 11)), //Posio do texto na tela
                Core.FONT_HERSHEY_PLAIN, new Double(1.1), new Scalar(150));

        Highgui.imwrite("D://Watermarked.jpg", source);

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

}

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From source file:OCV_GaussianBlur.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    if (ip.getBitDepth() == 8) {
        // srcdst
        int imw = ip.getWidth();
        int imh = ip.getHeight();
        byte[] srcdst_bytes = (byte[]) ip.getPixels();

        // mat//from   w  w  w.ja v  a 2 s .c o  m
        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_bytes);
        Imgproc.GaussianBlur(src_mat, dst_mat, ksize, sigma_x, sigma_y, INT_BORDERTYPE[indBorderType]);
        dst_mat.get(0, 0, srcdst_bytes);
    } else if (ip.getBitDepth() == 16) {
        // srcdst
        int imw = ip.getWidth();
        int imh = ip.getHeight();
        short[] srcdst_shorts = (short[]) ip.getPixels();

        // mat
        Mat src_mat = new Mat(imh, imw, CvType.CV_16S);
        Mat dst_mat = new Mat(imh, imw, CvType.CV_16S);

        // run
        src_mat.put(0, 0, srcdst_shorts);
        Imgproc.GaussianBlur(src_mat, dst_mat, ksize, sigma_x, sigma_y, INT_BORDERTYPE[indBorderType]);
        dst_mat.get(0, 0, srcdst_shorts);
    } else if (ip.getBitDepth() == 32) {
        // srcdst
        int imw = ip.getWidth();
        int imh = ip.getHeight();
        float[] srcdst_floats = (float[]) ip.getPixels();

        // mat
        Mat src_mat = new Mat(imh, imw, CvType.CV_32F);
        Mat dst_mat = new Mat(imh, imw, CvType.CV_32F);

        // run
        src_mat.put(0, 0, srcdst_floats);
        Imgproc.GaussianBlur(src_mat, dst_mat, ksize, sigma_x, sigma_y, INT_BORDERTYPE[indBorderType]);
        dst_mat.get(0, 0, srcdst_floats);
    } else {
        IJ.error("Wrong image format");
    }
}

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From source file:OCV_BilateralFilter.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    if (ip.getBitDepth() == 8) {
        // srcdst
        int imw = ip.getWidth();
        int imh = ip.getHeight();
        byte[] srcdst_bytes = (byte[]) ip.getPixels();

        // mat//from w w w  .ja  v a  2 s .c  om
        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_bytes);
        Imgproc.bilateralFilter(src_mat, dst_mat, diameter, sigmaColor, sigmaSpace,
                INT_BORDERTYPE[indBorderType]);
        dst_mat.get(0, 0, srcdst_bytes);
    } else if (ip.getBitDepth() == 24) {
        // dst
        int imw = ip.getWidth();
        int imh = ip.getHeight();
        int[] srcdst_ints = (int[]) ip.getPixels();

        // mat
        Mat src_mat = new Mat(imh, imw, CvType.CV_8UC3);
        Mat dst_mat = new Mat(imh, imw, CvType.CV_8UC3);

        // run
        OCV__LoadLibrary.intarray2mat(srcdst_ints, src_mat, imw, imh);
        Imgproc.bilateralFilter(src_mat, dst_mat, diameter, sigmaColor, sigmaSpace,
                INT_BORDERTYPE[indBorderType]);
        OCV__LoadLibrary.mat2intarray(dst_mat, srcdst_ints, imw, imh);
    } else if (ip.getBitDepth() == 32) {
        // srcdst
        int imw = ip.getWidth();
        int imh = ip.getHeight();
        float[] srcdst_bytes = (float[]) ip.getPixels();

        // mat
        Mat src_mat = new Mat(imh, imw, CvType.CV_32FC1);
        Mat dst_mat = new Mat(imh, imw, CvType.CV_32FC1);

        // run
        src_mat.put(0, 0, srcdst_bytes);
        Imgproc.bilateralFilter(src_mat, dst_mat, diameter, sigmaColor, sigmaSpace,
                INT_BORDERTYPE[indBorderType]);
        dst_mat.get(0, 0, srcdst_bytes);
    } else {
        IJ.error("Wrong image format");
    }
}

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From source file:OCV_EqualizeHist.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    // srcdst//from  ww w  .  j a v  a2s.  c  o  m
    int imw = ip.getWidth();
    int imh = ip.getHeight();
    byte[] srcdst_bytes = (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_bytes);
    Imgproc.equalizeHist(src_mat, dst_mat);
    dst_mat.get(0, 0, srcdst_bytes);
}

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From source file:OCV_HoughLinesP.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    // src/*from  ww  w.  j  a  va  2 s .c om*/
    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);
    Imgproc.HoughLinesP(src_mat, dst_lines, resDist, CV_PI / resAngFact, minVotes, minLen, maxGap);

    // fin
    showData(dst_lines);
}

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From source file:OCV_MedianBlur.java

License:Open Source License

@Override
public void run(ImageProcessor ip) {
    // srcdst//from   w  w w.j  a  v a2  s. co m
    int imw = ip.getWidth();
    int imh = ip.getHeight();
    byte[] srcdst_bytes = (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_bytes);
    Imgproc.medianBlur(src_mat, dst_mat, ksize);
    dst_mat.get(0, 0, srcdst_bytes);
}

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From source file:MainPyramids.java

public static void main(String[] args) {

    try {/*from   w w  w .j  a v a2s. c om*/

        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
        System.out.println("Verso OPENCV: " + Core.VERSION);

        //pyramids UP

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

        Mat destinationUp = new Mat(source.rows() * 2, source.cols() * 2, source.type());

        destinationUp = source;

        Imgproc.pyrUp(source, destinationUp, new Size(source.cols() * 2, source.rows() * 2),
                Imgproc.BORDER_DEFAULT);

        Highgui.imwrite("D://pyrUp.jpg", destinationUp);

        //pyramids DOWN

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

        Mat destinationDown = new Mat(source.rows() / 2, source.cols() / 2, source.type());

        destinationDown = source;

        Imgproc.pyrDown(source, destinationDown, new Size(source.cols() / 2, source.rows() / 2));

        Highgui.imwrite("pyrDown.jpg", destinationDown);

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

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