vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

modules/ximgproc/test/test_find_ellipses.cpp

@@ -0,0 +1,43 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#include "test_precomp.hpp"
+
+using namespace cv;
+
+namespace opencv_test { namespace {
+
+
+TEST(FindEllipsesTest, EllipsesOnly)
+{
+    std::string picture_name = "cv/imgproc/stuff.jpg";
+    std::string filename = cvtest::TS::ptr()->get_data_path() + picture_name;
+    Mat src = imread(filename, IMREAD_GRAYSCALE);
+    EXPECT_FALSE(src.empty()) << "Invalid test image: " << filename;
+
+    std::vector<Vec6f> ells;
+    ximgproc::findEllipses(src, ells, 0.7f, 0.75f, 0.02f);
+
+    // number check
+    EXPECT_EQ(ells.size(), size_t(3)) << "Should find 3 ellipses";
+
+    // position check
+    // target centers
+    Point2f center_1(226.9f, 57.2f);
+    Point2f center_2(393.1f, 187.0f);
+    Point2f center_3(208.5f, 307.5f);
+    // matching
+    for (auto ell: ells) {
+        bool has_match = false;
+        for (auto c: {center_1, center_2, center_3}) {
+            Point2f diff = c - Point2f(ell[0], ell[1]);
+            float distance = sqrt(diff.x * diff.x + diff.y * diff.y);
+            if (distance < 5.0) {
+                has_match = true;
+                break;
+            }
+        }
+        EXPECT_TRUE(has_match) << "Wrong ellipse center:" << Point2f(ell[0], ell[1]);
+    }
+}
+}}