!7

// uses only one prototype image
// goes through different granularities at once

cmodule ImageRecogSpike {
  switchable S prototypeImageID = #1102884;
  switchable S inputImageID = #1102883;

  // how big do we think the prototype is in the whole image
  // (percentage by height)
  transient double assumedPrototypeHeightPercentage = 70;
  
  transient L<Int> widths = ll(32, 64, 128);
  transient new L<IBWIntegralImage> integralImages;
  transient BWIntegralImage baseImage;
  transient JTabbedPane tabs = jTabbedPane();
  transient BWImage prototypeImage;
  transient new L<OneLevel> levels; // recognizers for each granularity

  class OneLevel extends SteppableAndBest<Rect> {
    IBWIntegralImage ii; // scaled integral image
    BWImage image;       // scaled image
    BWImage prototype;   // scaled prototype
    float minSimilarity = 0.5f;
    ImageSurface is;

    *(IBWIntegralImage *ii) {
      image = iBWIntegralImageToBWImage(ii);
      // get assumed height of prototype in scaled-down image
      int ph = iround(ii.getHeight()*assumedPrototypeHeightPercentage/100.0);
      // resize prototype
      prototype = bwResizeToHeightSmooth(prototypeImage, ph);
      addTab(tabs, "proto " + ii.getWidth(),
        jFullCenterScroll(jPixelatedZoomedImageSurface(4.0, prototype)));
    }
    
    public bool step() {
      FoundImg fi = bwImageSearch_best(image, prototype, minSimilarity);
      print("Search result: " + fi);
      if (fi != null) {
        best.put(fi.r, fi.sim);
        setImageSurfaceSelection(is, best!);
      }
      false; // done
    }
  }
  
  start-thread {
    if (baseImage == null)
      baseImage = BWIntegralImage(loadImage2(inputImageID));
    if (prototypeImage == null)
      prototypeImage = loadBWImage(prototypeImageID);
    for (int w : widths) {
      IBWIntegralImage ii = scaledIBWIntegralImage(baseImage, w);
      integralImages.add(ii);
      ImageSurface is = jPixelatedZoomedImageSurface(
        doubleRatio(baseImage.getWidth(), w), iBWIntegralImageToBWImage(ii));
      addTab(tabs, "w=" + w, jFullCenterScroll(is));
      levels.add(setAll(new OneLevel(ii), +is));
    }
    addTab(tabs, "Prototype", jFullCenterScroll(jPixelatedZoomedImageSurface(4, prototypeImage)));

    time "Process" {
      for (OneLevel lvl : levels)
        lvl.step();
    }
  }

  visual tabs;
}

Began life as a copy of #1027204