private void circlesToolStripMenuItem_Click(object sender, EventArgs e) { if (img == null) { return; } float angleSpacing = 1; float minAngle = 0; float maxAngle = 180; InputBox Threshold = new InputBox(); Threshold.ShowDialog(); int T = Convert.ToInt32(Threshold.ValueTextBox.Text); imgUndo = img.Copy(); Image <Gray, float> houghImg = ImageClass.HoughTransform(img.Convert <Gray, byte>(), angleSpacing, minAngle, maxAngle); Image <Bgr, byte> lines = ImageClass.ShowHoughCircles(img, imgOri, T); ShowIMG.ShowIMGStatic(img, lines); }