SampleApp.MainForm.videoSourcePlayer1_NewFrame C# (CSharp) Method

        private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image)
        {
            Invert inv = new Invert();
            inv.ApplyInPlace(image);

            UnmanagedImage ui = UnmanagedImage.FromManagedImage(image);

            pictureBox1.Image = image;


            if (controller.Tracker.TrackingObject == null)
                return;

            if (controller.Tracker.TrackingObject.IsEmpty)
                return;

            var rect = controller.Tracker.TrackingObject.Rectangle;
            Crop crop = new Crop(rect);

            UnmanagedImage head = crop.Apply(ui);

            var points = new List<IntPoint>() { new IntPoint(head.Width / 2, head.Height / 2) };
            var pps = head.Collect16bppPixelValues(points);

            double mean = pps.Mean();

            double cutoff = mean + 15;
            Threshold t = new Threshold((int)cutoff);
            var mask = t.Apply(ui);



            LevelsLinear16bpp levels = new LevelsLinear16bpp();
            levels.InGray = new IntRange((int)cutoff, 65535);
            levels.OutGray = new IntRange(0, 65535);
            levels.ApplyInPlace(ui);


            var mask8bit = Accord.Imaging.Image.Convert16bppTo8bpp(mask.ToManagedImage());



            BlobCounter bc = new BlobCounter();
            bc.ObjectsOrder = ObjectsOrder.Area;
            bc.ProcessImage(mask8bit);
            var blobs = bc.GetObjectsInformation();

            inv.ApplyInPlace(image);
            Intersect intersect = new Intersect();
            intersect.UnmanagedOverlayImage = mask;
            mask = intersect.Apply(ui);

            List<Rectangle> rects = new List<Rectangle>();

            // Extract the uppermost largest blobs.
            for (int i = 0; i < blobs.Length; i++)
            {
                double dx = (blobs[i].Rectangle.Top - controller.Tracker.TrackingObject.Center.Y);
                double d = (dx * dx) / controller.Tracker.TrackingObject.Area;
                if (d < 2 && blobs[i].Area > 1000)
                    rects.Add(blobs[i].Rectangle);
            }

            rects.Sort(compare);

            if (rects.Count > 0)
            {
                captureHand(mask, rects[0], pbLeftArm, pbLeftHand);
            }
            if (rects.Count > 1)
            {
                captureHand(mask, rects[1], pbRightArm, pbRightHand);

            }

            RectanglesMarker marker = new RectanglesMarker(rects);
            marker.MarkerColor = Color.White;
            marker.ApplyInPlace(mask8bit);

            image = mask.ToManagedImage();
        }