Scoring hits in a shooting target

asked 2018-04-25 12:57:42 -0600

kkalwa gravatar image

updated 2018-04-25 13:24:33 -0600

I am working on a Java project in which I take the image of shooting target and I compute scoring. I've alreeady found this But it wasn't helpful. I already written code that finds bullet holes and now I need something that will score them. I was thinking about Hough Transform to find circles but the algorithm works poorly in my case (I don't know why but I can't add an image). In my case algorithm finds 88 circles on my image and that is too much. I need help with improving Hough or with developing other algorithm. EDIT:

Type of target I'm working with Type of target I'm working with

Below output of Hough transform Circles found on my image with circular Hough Transform

Below the code I used for Hough Transform

 static void drawCircles(Mat input, Mat circles)
    for(int i=0; i<circles.cols(); ++i)
        double[] current = circles.get(0, i);
        for(double e: current)
  ,new Point(current[0], current[1]), (int)current[2], new Scalar(0,0,255),10);
static void tests()
    Mat input = Imgcodecs.imread(sciezkaStartowa + "D.jpg"), output = new Mat(), gray = new Mat();
        System.out.println("Couldn't open file");

    Imgproc.cvtColor(input, gray, Imgproc.COLOR_BGR2GRAY);
    Mat circles = new Mat();
    Imgproc.HoughCircles(gray, circles, Imgproc.HOUGH_GRADIENT, 0.5, 50, 120, 200, 40, gray.cols());
    drawCircles(input, circles);
    saveFile(input, "Kola.jpg");
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show us images, you're working on, and code, that you tried, please.

(only referencing, what others did, is not helpful at all here)

berak gravatar imageberak ( 2018-04-25 13:00:07 -0600 )edit