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()

Source Link

Usage

From source file:javafx1.JavaFX1.java

private Mat doBackgroundRemoval(Mat frame) {
        // init//ww w .j  a  v a  2 s.  c o  m
        Mat hsvImg = new Mat();
        List<Mat> hsvPlanes = new ArrayList<>();
        Mat thresholdImg = new Mat();

        int thresh_type = Imgproc.THRESH_BINARY_INV;
        //inverse
        thresh_type = Imgproc.THRESH_BINARY;

        // threshold the image with the average hue value
        hsvImg.create(frame.size(), CvType.CV_8U);
        Imgproc.cvtColor(frame, hsvImg, Imgproc.COLOR_BGR2HSV);
        Core.split(hsvImg, hsvPlanes);

        // get the average hue value of the image
        double threshValue = this.getHistAverage(hsvImg, hsvPlanes.get(0));

        Imgproc.threshold(hsvPlanes.get(0), thresholdImg, threshValue, 179.0, thresh_type);

        Imgproc.blur(thresholdImg, thresholdImg, new Size(5, 5));

        // dilate to fill gaps, erode to smooth edges
        Imgproc.dilate(thresholdImg, thresholdImg, new Mat(), new Point(-1, -1), 1);
        Imgproc.erode(thresholdImg, thresholdImg, new Mat(), new Point(-1, -1), 3);

        Imgproc.threshold(thresholdImg, thresholdImg, threshValue, 179.0, Imgproc.THRESH_BINARY);

        // create the new image
        Mat foreground = new Mat(frame.size(), CvType.CV_8UC3, new Scalar(255, 255, 255));
        frame.copyTo(foreground, thresholdImg);

        return foreground;
    }