ide the boundary margin (2)
</pre>

<p>The <code/><a href=../matlab/vl_plotframe.html>vl_plotframe</a></code> command can then be used to plot
these features</p>

<div class="highlight"><pre><span class="n">hold</span> <span class="n">on</span> <span class="p">;</span>
<span class="n">vl_plotframe</span><span class="p">(</span><span class="n">frames</span><span class="p">)</span> <span class="p">;</span>
</pre></div>


<p>which results in the image</p>

<div class="figure">
 <img src="../demo/covdet_basic_f