sclass DominantColorBasedSegmenter implements IF1<BufferedImage, L<Rect>> {
  ParameterizedSegmenter baseSegmenter;
  int nColors = 5;
  
  *() {}
  *(ParameterizedSegmenter *baseSegmenter) {}
  
  public L<Rect> get(BufferedImage img) {
    L<ParameterizedSegmenter> segmenters = asList(chessOCR_adaptSegmenterToMainImageColors(img, baseSegmenter, maxColors := nColors));
    L<Rect> l = asList(roundRobinCombinedIterator(
      map(segmenters, s -> s.get(img))));
    print("Have " + nRects(l));
    ret l;
  }
}