public void FindTest() { List <IntPoint> contour = new List <IntPoint>(); int max = 100; for (int i = 0; i < max; i++) { add(contour, i, max); } for (int i = 0; i < max; i++) { add(contour, max, i); } for (int i = 0; i < max; i++) { add(contour, 0, i); } for (int i = 0; i < max / 2; i++) { add(contour, i, i); } for (int i = 0; i < max / 2; i++) { add(contour, i + max / 2, max / 2 - i); } PointsMarker marker = new PointsMarker(contour); var bitmap = AForge.Imaging.Image.CreateGrayscaleImage(max + 1, max + 1); bitmap = marker.Apply(bitmap); // ImageBox.Show(bitmap); GrahamConvexHull graham = new GrahamConvexHull(); List <IntPoint> hull = graham.FindHull(contour); ConvexHullDefects hullDefects = new ConvexHullDefects(10); List <ConvexityDefect> defects = hullDefects.FindDefects(contour, hull); Assert.AreEqual(1, defects.Count); Assert.AreEqual(99, defects[0].Depth); }
public void FindDefectsTest() { Bitmap bmp = Properties.Resources.hand; Bitmap gray = AForge.Imaging.Filters.Grayscale.CommonAlgorithms.BT709.Apply(bmp); BlobCounter bc = new BlobCounter(gray); bc.ObjectsOrder = ObjectsOrder.Size; Blob[] blobs = bc.GetObjectsInformation(); bc.ExtractBlobsImage(bmp, blobs[0], true); Bitmap blob = blobs[0].Image.ToManagedImage(); BorderFollowing bf = new BorderFollowing(); List <IntPoint> contour = bf.FindContour(blob); GrahamConvexHull graham = new GrahamConvexHull(); List <IntPoint> hull = graham.FindHull(contour); ConvexHullDefects hullDefects = new ConvexHullDefects(10); List <ConvexityDefect> defects = hullDefects.FindDefects(contour, hull); /* PointsMarker marker = new PointsMarker(hull, Color.Green, 10); * marker.ApplyInPlace(blob); * ImageBox.Show(blob); */ Assert.AreEqual(2, defects.Count); Assert.AreEqual(new IntPoint(130, 10), contour[defects[0].Start]); Assert.AreEqual(new IntPoint(93, 109), contour[defects[0].Point]); Assert.AreEqual(new IntPoint(64, 9), contour[defects[0].End]); Assert.AreEqual(99.549179077148438, defects[0].Depth, 1e-5); Assert.IsFalse(double.IsNaN(defects[0].Depth)); // Assert.AreEqual(9912.9531239366424, defects[0].Area); Assert.AreEqual(new IntPoint(49, 18), contour[defects[1].Start]); Assert.AreEqual(new IntPoint(61, 106), contour[defects[1].Point]); Assert.AreEqual(new IntPoint(18, 127), contour[defects[1].End]); Assert.AreEqual(35.615153852366504, defects[1].Depth, 1e-5); Assert.IsFalse(double.IsNaN(defects[1].Depth)); // Assert.AreEqual(2293.7535682510002, defects[1].Area); }
static void Main(string[] args) { Threshold thresh = new Threshold(10); Median median = new Median(9); Erosion3x3 erode = new Erosion3x3(); Dilatation3x3 dilate = new Dilatation3x3(); GrahamConvexHull hullFinder = new GrahamConvexHull(); ConnectedComponentsLabeling ccLabeler = new ConnectedComponentsLabeling(); BorderFollowing contourFinder = new BorderFollowing(); GrayscaleToRGB rgb = new GrayscaleToRGB(); ConvexHullDefects defectFinder = new ConvexHullDefects(10); Bitmap img = (Bitmap)Bitmap.FromFile("hand3.jpg"); Bitmap image = Grayscale.CommonAlgorithms.BT709.Apply(img); thresh.ApplyInPlace(image); //median.ApplyInPlace(image); erode.ApplyInPlace(image); dilate.ApplyInPlace(image); BlobCounter counter = new BlobCounter(image); counter.ObjectsOrder = ObjectsOrder.Area; Blob[] blobs = counter.GetObjectsInformation(); if (blobs.Length > 0) { counter.ExtractBlobsImage(image, blobs[0], true); UnmanagedImage hand = blobs[0].Image; var contour = contourFinder.FindContour(hand); if (contour.Count() > 0) { var initialHull = hullFinder.FindHull(contour); var defects = defectFinder.FindDefects(contour, initialHull); var filteredHull = initialHull.ClusterHullPoints().FilterLinearHullPoints(); var palmCenter = defects.Centroid(contour); var wristPoints = filteredHull.SelectWristPoints(defects, contour); Bitmap color = rgb.Apply(hand).ToManagedImage(); //BitmapData data = color.LockBits(new Rectangle(0, 0, color.Width, color.Height), ImageLockMode.ReadWrite, color.PixelFormat); //Drawing.Polyline(data, contour, Color.Blue); //Drawing.Polygon(data, filteredHull, Color.Red); //color.UnlockBits(data); Graphics gr = Graphics.FromImage(color); gr.DrawPolygon(new Pen(Brushes.Red, 3), filteredHull.ToPtArray()); gr.DrawLines(new Pen(Brushes.Blue, 3), contour.ToPtArray()); gr.DrawEllipse(new Pen(Brushes.Red, 3), palmCenter.X - 10, palmCenter.Y - 10, 20, 20); foreach (ConvexityDefect defect in defects) { gr.DrawEllipse(new Pen(Brushes.Green, 6), contour[defect.Point].X - 10, contour[defect.Point].Y - 10, 20, 20); } foreach (AForge.IntPoint pt in filteredHull) { gr.DrawEllipse(new Pen(Brushes.Yellow, 6), pt.X - 10, pt.Y - 10, 20, 20); } foreach (AForge.IntPoint pt in wristPoints) { gr.DrawEllipse(new Pen(Brushes.PowderBlue, 6), pt.X - 10, pt.Y - 10, 20, 20); } ImageBox.Show(color); } } }