Example usage for org.opencv.core MatOfPoint height

Introduction

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

Prototype

public int height() 

Source Link

Usage

From source file:qupath.opencv.DetectCytokeratinCV.java

License:Open Source License

public static void updateArea(final List<MatOfPoint> contours, final Mat hierarchy, final Area area, int row,
        int depth) {
    while (row >= 0) {
        int[] data = new int[4];
        hierarchy.get(0, row, data);//w  ww.ja va  2s  .  com

        MatOfPoint contour = contours.get(row);

        // Don't include isolated pixels - otherwise add or remove, as required
        if (contour.height() > 2) {
            Path2D path = getContour(contour);
            if (depth % 2 == 0)
                area.add(new Area(path));
            else
                area.subtract(new Area(path));
        }

        // Deal with any sub-contours
        if (data[2] >= 0)
            updateArea(contours, hierarchy, area, data[2], depth + 1);

        // Move to next contour in this hierarchy level
        row = data[0];
    }
}

---

From source file:simeav.Utils.java

public static ArrayList<Point> detectarVertices(Mat original) {
    MatOfPoint corners = new MatOfPoint();
    Imgproc.goodFeaturesToTrack(original, corners, 100, 0.01, 0, new Mat(), 2, false, 0.04);
    Mat vertices = Mat.zeros(original.size(), CvType.CV_8UC3);
    for (int i = 0; i < corners.height(); i++) {
        Core.circle(vertices, new Point(corners.get(i, 0)), 8, new Scalar(180, 170, 5), -1);
    }/*from  ww w.  jav  a  2  s  .  c o m*/

    Mat imGrises = new Mat();
    Mat bw = new Mat();
    Imgproc.cvtColor(vertices, imGrises, Imgproc.COLOR_BGR2GRAY);
    Imgproc.Canny(imGrises, bw, 100, 150, 5, true);

    Mat jerarquia = new Mat();
    ArrayList<MatOfPoint> contornos = new ArrayList<>();
    Imgproc.findContours(bw.clone(), contornos, jerarquia, Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE);
    ArrayList<Point> mc = Utils.getCentros(contornos);
    Mat resultado = Mat.zeros(original.size(), CvType.CV_8UC3);
    for (int i = 0; i < contornos.size(); i++) {
        Scalar color = new Scalar(180, 170, 5);
        //            Imgproc.drawContours(resultado, contornos, i, color, 2, 8, jerarquia, 0, new Point());
        Core.circle(resultado, mc.get(i), 4, color, -1, 8, 0);
    }
    return mc;
}

---