srecord noeq ImageSimilarityAtScale(
  IIntegralImage img1,
  IIntegralImage img2,
  int featureSize // smallest block size looked at (in pixels)
  ) extends Probabilistic {
  
  record LookAtClip(Rect r) {
    run {
      img1.get
      
      if (r.w > r.h) {
        if (r.w > featureSize)
          splitHorizontally();
      } else
        if (r.h > featureSize)
          splitVertically();
      }
    }
    
    void splitHorizontally {
    }
    
    void splitVertically {
    }
  }
  
  run {
    assertEqualsVerbose("Sizes of compared images have to be equal", img1.getSize(), img2.getSize());
    
    schedule(new LookAtClip(imageRect(img1)));
  }
}