// g = grid size - typical values are 3 or 4
static L<Rect> autoSegment(BWImage img, int g) {
  new AutoSegmenter as;
  as.g = g;
  as.go(img);
  ret as.clips;
}

static L<Rect> autoSegment(BWImage img) {
  ret autoSegment(img, 3);
}

static L<Rect> autoSegment(BufferedImage img) {
  ret autoSegment(new BWImage(img));
}