matrix_t** b, int type, int size, double low_thresh, double high_thresh)
</code></pre>

<p><a href="https://en.wikipedia.org/wiki/Canny_edge_detector">Canny edge detector</a> implementation. For performance size, this is a clean-up reimplementation of OpenCV’s Canny edge detector, it has very similar performance characteristic as the OpenCV one. As of today, ccv’s Canny edge detector only works with CCV_8U or CCV_32S dense matrix type.</p>

<ul>
  <li><strong>a</strong>: the input matrix.</li>
  <li><st