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71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
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// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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//
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// Copyright (C) 2016, Itseez, Inc, all rights reserved.
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#include "test_precomp.hpp"
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#include <vector>
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#include <cmath>
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using namespace cv;
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using namespace std;
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// return true if point lies inside ellipse
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static bool check_pt_in_ellipse(const Point2f& pt, const RotatedRect& el) {
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Point2f to_pt = pt - el.center;
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double pt_angle = atan2(to_pt.y, to_pt.x);
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double el_angle = el.angle * CV_PI / 180;
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double x_dist = 0.5 * el.size.width * cos(pt_angle + el_angle);
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double y_dist = 0.5 * el.size.height * sin(pt_angle + el_angle);
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double el_dist = sqrt(x_dist * x_dist + y_dist * y_dist);
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return norm(to_pt) < el_dist;
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}
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// Return true if mass center of fitted points lies inside ellipse
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static bool fit_and_check_ellipse(const vector<Point2f>& pts) {
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RotatedRect ellipse = fitEllipse(pts);
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Point2f mass_center;
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for (size_t i = 0; i < pts.size(); i++) {
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mass_center += pts[i];
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}
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mass_center /= (float)pts.size();
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return check_pt_in_ellipse(mass_center, ellipse);
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}
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TEST(Imgproc_FitEllipse_Issue_4515, DISABLED_accuracy) {
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vector<Point2f> pts;
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pts.push_back(Point2f(327, 317));
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pts.push_back(Point2f(328, 316));
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pts.push_back(Point2f(329, 315));
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pts.push_back(Point2f(330, 314));
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pts.push_back(Point2f(331, 314));
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pts.push_back(Point2f(332, 314));
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pts.push_back(Point2f(333, 315));
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pts.push_back(Point2f(333, 316));
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pts.push_back(Point2f(333, 317));
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pts.push_back(Point2f(333, 318));
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pts.push_back(Point2f(333, 319));
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pts.push_back(Point2f(333, 320));
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EXPECT_TRUE(fit_and_check_ellipse(pts));
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}
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TEST(Imgproc_FitEllipse_Issue_6544, DISABLED_accuracy) {
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vector<Point2f> pts;
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pts.push_back(Point2f(924.784f, 764.160f));
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pts.push_back(Point2f(928.388f, 615.903f));
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pts.push_back(Point2f(847.4f, 888.014f));
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pts.push_back(Point2f(929.406f, 741.675f));
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pts.push_back(Point2f(904.564f, 825.605f));
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pts.push_back(Point2f(926.742f, 760.746f));
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pts.push_back(Point2f(863.479f, 873.406f));
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pts.push_back(Point2f(910.987f, 808.863f));
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pts.push_back(Point2f(929.145f, 744.976f));
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pts.push_back(Point2f(917.474f, 791.823f));
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EXPECT_TRUE(fit_and_check_ellipse(pts));
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}
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