static ImageSurface showZoomedImage(final RGBImage image) {
  ret showZoomedImage(image, 2);
}

static ImageSurface showZoomedImage(S title, RGBImage image) {
  ret showZoomedImage(title, image, 2);
}

static ImageSurface showZoomedImage(S title, RGBImage image, double zoom) {
  ret setFrameTitle(showZoomedImage(image, zoom), title);
}

static ImageSurface showZoomedImage(final RGBImage image, final double zoom) {
  ret (ImageSurface) swingAndWait(func {
    ImageSurface is = showImage(image);
    is.setZoom(zoom);
    packFrame(is);
    ret is;
  });
}

ifclass BWImage
  static ImageSurface showZoomedImage(BWImage image) {
    ret showZoomedImage(image.getBufferedImage());
  }
endif