C# Image to PathGeometry

Question

I am trying to Convert an Image to a PathGeometry. I upload a picture, and then I do canny edge detection and now I want to convert that in to a PathGeometry. My over all plan it to fill it with different colors.

So I tried this :

  public Shape MakeSape(Brush customColor, double[,] image)
     {
     Path graphPath = new Path();
     graphPath.Fill = customColor;
            graphPath.Stroke = Brushes.Black;
            PathFigure pf = new PathFigure();
            pf.StartPoint = new Point(0, 0);
            pf.IsClosed = true;
            int row = image.GetLength(0);
            int column = image.GetLength(1);

            for (int y = 0; y < row; y++)
            {
                for (int x = 0; x < column; x++)
                {
                    if (image[y, x] >= LowThreshold)
                    {
                        pf.Segments.Add(new LineSegment(new Point(x, y), true));
                    }
                }

            }

            PathGeometry pg = new PathGeometry();
            pg.Figures.Add(pf);
            graphPath.Data = pg;

            ImageAsShape = graphPath;
            return graphPath;
        }

And that looked like it should work, but I am just getting all black.

Answer 1

You can see the source code of Vectorization (not simple...)