static ImageSurface showZoomedBWImage(BWImage img) {
  ret showZoomedImage(img.getBufferedImage());
}

static ImageSurface showZoomedBWImage(BWImage img, double zoom) {
  ret showZoomedImage(img.getBufferedImage(), zoom);
}

static ImageSurface showZoomedBWImage(S title, BWImage img) {
  ret showZoomedImage(title, img.getBufferedImage());
}