slass G22GhostImage is MakesBufferedImage {
  // number of images averaged
  int imageCount;
  
  // array contains raw sum over images
  // (1 for white pixel, 0 for black pixel)
  int[] pixels;
  
  FloatBWImage toFloatBWImage() {
    
  }
  
  public BufferedImage getBufferedImage() {
    ret toFloatBWImage().getBufferedImage();
  }
}