~~ -->
<h1 id="tut.covdet.custom">Custom frames</h1>
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<p>Finally, it is possible to use <code/><a href=../matlab/vl_covdet.html>vl_covdet</a></code> to compute
descriptors on custom feature frames, or to apply affine adaptation
and/or orientation estimation to these.</p>

<p>For example</p>

<div class="highlight"><pre><span class="n">delta</span> <span class="p">=</span> <span class="mi">30</span> <span class="p">;</span>
<span class="n