public void Video_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
UnmanagedImage image = UnmanagedImage.FromManagedImage((Bitmap) eventArgs.Frame.Clone());
var extractChannel = new ExtractChannel(RGB.R);
UnmanagedImage channel = extractChannel.Apply(image);
// UnmanagedImage originalRed = channel.Clone();
if (true) {
var threshold = new Threshold(200);
threshold.ApplyInPlace(channel);
////filter to convert RGB image to 8bpp gray scale for image processing
//IFilter gray_filter = new GrayscaleBT709();
//gray_image = gray_filter.Apply(gray_image);
////thresholding a image
//Threshold th_filter = new Threshold(color_data.threshold);
//th_filter.ApplyInPlace(gray_image);
//erosion filter to filter out small unwanted pixels
Erosion3x3 erosion = new Erosion3x3();
erosion.ApplyInPlace(channel);
//dilation filter
//Dilatation3x3 dilatation = new Dilatation3x3();
//dilatation.ApplyInPlace(channel);
//GrayscaleToRGB filter = new GrayscaleToRGB();
//image = filter.Apply(channel);
//ReplaceChannel replaceFilter = new ReplaceChannel(RGB.B, channel);
//replaceFilter.ApplyInPlace(image);
}
BlobCounter bc = new BlobCounter();
//arrange blobs by area
bc.ObjectsOrder = ObjectsOrder.Area;
bc.FilterBlobs = true;
bc.MinHeight = minObjectSize;
bc.MinWidth = minObjectSize;
bc.MaxHeight = maxObjectSize;
bc.MaxWidth = maxObjectSize;
//process image for blobs
bc.ProcessImage(channel);
channel.Dispose();
// if (motionDetector.ProcessFrame(image) > 0.02) {
// for (int i = 0; i < blobCountingObjectsProcessing.ObjectRectangles.Length; i++) {
Rectangle[] rectangles = bc.GetObjectsRectangles();
Blob[] blobs = bc.GetObjectsInformation();
for (int i = 0; i < bc.ObjectsCount; i++) {
Rectangle rectangle = rectangles[i];
int width = rectangle.Width;
int height = rectangle.Height;
// if (width < maxObjectSize && height < maxObjectSize && width > minObjectSize && height > minObjectSize) {
Drawing.Rectangle(image, rectangle, colorList[i % colorList.Length]);
if (i == 0) {
Position = GetCenterOfMass(image, rectangle);
Drawing.FillRectangle(image, rectangle, Color.BlanchedAlmond);
Drawing.FillRectangle(image, new Rectangle((int) Position.U - dotSize, (int) Position.V - dotSize, dotSize * 3, dotSize * 3), Color.Indigo);
}
// }
}
// }
Image = image.ToManagedImage();
// videoForm.ImageDestination.Image = image.ToManagedImage();
}
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);
}
}
}
