sPath);
</precode>

<p>
The detected features can be visualises with their regions
using <code>vl_plotframe</code> function.
</p>

<precode type="matlab">
imshow(ellBlobs);
sfH = vl_plotframe(siftFrames,'g');
bssfH = vl_plotframe(bigScaleSiftFrames,'r');
legend([sfH bssfH],'SIFT','Big Scale SIFT');
</precode>

<div class="figure">
 <img src="%pathto:root;demo/siftFrames.jpg"/>
 <div class="caption">
  <span class="content">
   SIFT frames detected on a test image using different peak threshold.
  </span>
 <