Clip Image

Hi All,

Is it possible to get the points of a image? for example a ellipse has 13 points in a graphics path, now if I had a image that was a ellipse how could I get 13 points from the image?

is it possible?

Thanks

Loftty

You can scan the image point-by-point and put all colored points (not white) in an array

But this only works for a special kind of images, where it only have one shape

Hi,

This is how far I got as I need to create a graphics path from a image

Code:

---

OpenFileDialog op = new OpenFileDialog();
            op.ShowDialog();

            Bitmap b = new Bitmap(op.FileName);
            Bitmap bat = new Bitmap(Im, pictureBox1.Width, pictureBox1.Height);
            Image d = bat;
            Graphics g = Graphics.FromImage(d);
            g.SmoothingMode = SmoothingMode.AntiAlias;

            List<Point> pnts = new List<Point>();
            List<RectangleF> Rects = new List<RectangleF>();
            GraphicsPath gp = new GraphicsPath();
            int h = 0;
            for (int i = 0; i < b.Width; i++)
            {

                for (int j = 0; j < b.Height; j++)
                {
                    if (b.GetPixel(i, j) != Color.FromArgb(255, 255, 255, 255))
                    {
                        if (j <= h+1)
                        {
                            pnts.Add(new Point(i, j));
                        }
                        h = j;
                    }
                   
                }
            }

            Point[] pts = new Point[pnts.Count];
            for (int i = 0; i < pnts.Count; i++)
            {
                pts[i] = pnts[i];
            }

            gp.AddLines(pts);
            gp.CloseFigure();
            Brush bdd = new SolidBrush(Color.Red);
            g.FillPath(bdd, gp);
            g.DrawPath(new Pen(Color.Black), gp);
           
            pictureBox1.Refresh();
            pictureBox1.Image = d;

---

Which is from the attached image, but for some reason it does not create the correct path.
Why is this?

Thanks

Loftty

Hi,

Is this possible to do then?

Thanks

Loftty