e)
</code></pre>

<p><a href="https://en.wikipedia.org/wiki/Otsu%27s_method">OTSU</a> implementation.</p>

<ul>
  <li><strong>a</strong>: the input matrix.</li>
  <li><strong>outvar</strong>: the inter-class variance.</li>
  <li><strong>range</strong>: the maximum range of data in the input matrix.</li>
</ul>

<p>It turns the threshold, inclusively. e.g. 5 means 0~5 is in the background, and 6~255 is in the foreground.</p>

<h2 id="ccvopticalflowlucaskanade">ccv_optical_flow_lucas_kanade</h2>

<pre><code>vo