private void TrainPerseptron()
 {
     var folderName = AppDomain.CurrentDomain.BaseDirectory;
     var perFile = folderName + "\\per.data";
     var imgsFolder = folderName + "\\Lightshot";
     var imgsNames = Directory.GetFiles(imgsFolder);
     var imgToVes = new Dictionary<int[], double[]>();
     for (int i = 0; i < Letters.Length; i++)
     {
         var fn = String.Format("{0}\\Screenshot_{1}.png", imgsFolder, i + 1);
         var img = new Bitmap(System.Drawing.Image.FromFile(fn));
         var ves = new double[imgsNames.Length];
         ves[i] = 1;
         imgToVes.Add(BitmapEditor.ImgToInts(img), ves);
     }
     System.Diagnostics.Debug.WriteLine("Training start");
     Perseptron p = new Perseptron(30 * 40, 30 * 40, Letters.Length);
     p.Train(imgToVes);
     p.Save(perFile);
 }