vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

modules/ximgproc/samples/find_ellipses.py

@@ -0,0 +1,46 @@
+#!/usr/bin/python
+
+'''
+This example illustrates how to use cv.ximgproc.findEllipses function.
+
+Usage:
+    find_ellipses.py [<image_name>]
+    image argument defaults to stuff.jpg
+'''
+
+# Python 2/3 compatibility
+from __future__ import print_function
+
+import numpy as np
+import cv2 as cv
+import sys
+import math
+
+def main():
+    try:
+        fn = sys.argv[1]
+    except IndexError:
+        fn = 'stuff.jpg'
+
+    src = cv.imread(cv.samples.findFile(fn))
+    cv.imshow("source", src)
+
+    ells = cv.ximgproc.findEllipses(src,scoreThreshold = 0.4, reliabilityThreshold = 0.7, centerDistanceThreshold = 0.02)
+
+    if ells is not None:
+        for i in range(len(ells)):
+            center = (int(ells[i][0][0]), int(ells[i][0][1]))
+            axes = (int(ells[i][0][2]),int(ells[i][0][3]))
+            angle = ells[i][0][5] * 180 / math.pi
+            color = (0, 0, 255)
+            cv.ellipse(src, center, axes, angle,0, 360, color, 2, cv.LINE_AA)
+
+    cv.imshow("detected ellipses", src)
+    cv.waitKey(0)
+    print('Done')
+
+
+if __name__ == '__main__':
+    print(__doc__)
+    main()
+    cv.destroyAllWindows()