static BufferedImage dropAlphaChannelFromBufferedImage(BufferedImage img) {
  if (img == null || img.getType() == BufferedImage.TYPE_INT_RGB) ret img;
  int w = img.getWidth(), h = img.getHeight();
  BufferedImage newImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
  int[] rgb = img.getRGB(0, 0, w, h, null, 0, w);
  newImage.setRGB(0, 0, w, h, rgb, 0, w);
  ret newImage;
}