private void btnCapture_Click(object sender, EventArgs e)
  {
      if (!Directory.Exists(Application.StartupPath + "/Faces"))
      {
          Directory.CreateDirectory(Application.StartupPath + "/Faces");
      }

      count = count + 1;
      grayFace = camera.QueryGrayFrame().Resize(320, 240, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);
      MCvAvgComp[][] detectedFaces = grayFace.DetectHaarCascade(faceDetected, 1.2, 10, Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new Size(20, 20));
      foreach (MCvAvgComp f in detectedFaces[0])
      {
          trainedFace = frame.Copy(f.rect).Convert<Gray, byte>();
          break;
      }
      trainedFace = result.Resize(100, 100, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);
      trainingImage.Add(trainedFace);
      labels.Add(student.StudentName);
      biometric.FaceId = string.Format("{0}.bmp", student.StudentName);
      trainingImage.ToArray()[1 - 1].Save(Application.StartupPath + "/Faces/" + biometric.FaceId);

      trainingImage.Add(new Image<Gray, byte>(Application.StartupPath + "/Faces/" + biometric.FaceId));
      SaveBiometric(student.StudentId);

      btnCapture.Enabled = false;
  }