Thresholding.cs

Bitmap bmp1 = new Bitmap(AppDomain.CurrentDomain.BaseDirectory + "STU.bmp");
Bitmap bmp2 = new Bitmap(256, 256);
Color myColor = new Color();

int T = 75;
for (int r = 0; r < bmp1.Height; r++) {
  for (int c = 0; c < bmp1.Width; c++) {
    myColor = bmp1.GetPixel(c, r);

    if (myColor.G > T) {
      bmp2.SetPixel(c, r, Color.FromArgb(255, 255, 255));
    }
    else {
      bmp2.SetPixel(c, r, Color.FromArgb(0, 0, 0));
    }
  }
}