hog</h2>

<pre><code>void ccv_hog(ccv_dense_matrix_t* a, ccv_dense_matrix_t** b, int b_type, int sbin, int size)
</code></pre>

<p><a href="https://en.wikipedia.org/wiki/Histogram_of_oriented_gradients">Histogram-of-Oriented-Gradients</a> implementation, specifically, it implements the HOG described in <em>Object Detection with Discriminatively Trained Part-Based Models, Pedro F. Felzenszwalb, Ross B. Girshick, David McAllester and Deva Ramanan</em>.</p>

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