原图：

代码：

            Mat src = Cv2.ImRead(FilePath.Image.Shapes);Mat gray = new Mat();Mat binary = new Mat();Cv2.CvtColor(src, gray, ColorConversionCodes.BGR2GRAY);Cv2.Threshold(gray, binary, 1, 255, ThresholdTypes.Binary);//轮廓ConnectedComponents cc = Cv2.ConnectedComponentsEx(binary);foreach (var b in cc.Blobs.Skip(1)){Mat m = new Mat(binary, b.Rect);Cv2.FindContours(m, out Point[][] contours, out _, RetrievalModes.External, ContourApproximationModes.ApproxSimple);//寻找最大内切圆double dist;double maxdist;Point center = new Point();foreach (var VPResult in contours){maxdist = 0d;for (int i = 0; i < m.Cols; i++){for (int j = 0; j < m.Rows; j++){//点到轮廓的最大距离dist = Cv2.PointPolygonTest(VPResult, new Point(i, j), true);if (dist > maxdist){maxdist = dist;center = new Point(i, j);}}}Cv2.Circle(src, b.Left + center.X, b.Top + center.Y, (int)maxdist, Scalar.Red);}}

结果：

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