Good Evening,
I have a trouble with finding extreme points in frames. I am detecting all contours, but I want find there one extreme point, which is lowest from others (southernmost contour). Here is a preview of screen, what I have.
And here is a preview of screen, what I want ! For example, lowest point will bounded by red rectangle.
.
And here is my code, what I have now.
contours = new ArrayList<MatOfPoint>();
Rect rect;
Point c1 = new Point(); Point c2 = new Point();
Imgproc.cvtColor(mRgba, mGray, Imgproc.COLOR_RGB2GRAY);
subtractorMOG2.apply(mGray, mFGMask, 0.005);
Imgproc.threshold(mFGMask, mFGMask, 45, 255, Imgproc.THRESH_BINARY);
Imgproc.erode(mFGMask, mFGMask, new Mat());
Imgproc.dilate(mFGMask, mFGMask, new Mat());
Imgproc.findContours(mFGMask, contours, new Mat(), Imgproc.RETR_EXTERNAL , Imgproc.CHAIN_APPROX_NONE);
Imgproc.drawContours(mRgba, contours, -1, new Scalar(255, 255, 0), 3);
/*for (int idx = 0; idx < contours.size(); idx++) {
double contourarea = Imgproc.contourArea(contours.get(idx));
rect = boundingRect(contours.get(idx));
c1.x = rect.x; c1.y = rect.y;
c2.x = rect.x + rect.width; c2.y = rect.y + rect.height;
if (contourarea > 1024 && contourarea < 30000) {
Imgproc.rectangle(mRgba, c1, c2, new Scalar(255, 0, 0), 3);
}
}*/
return mRgba;
Thanks everybody for help and comments !