static L<RGBImageAndRect> markedFaces_scaledToWidth(int width) {
  new L<RGBImageAndRect> images;
  for (File f : listImageFiles(ai_markedFacesDir())) {
    BufferedImage img = loadImage2(f);
    Rect face = unstruct(getFileInfoField(f, "Face position"));
    if (face == null) continue;
    BufferedImage img2 = scaleImageToWidth(img, width);
    Rect face2 = rescaleRect_imageToImage(face, img, img2);
    images.add(RGBImageAndRect(RGBImage(img2), face2));
  }
  ret images;
}