id ccv_optical_flow_lucas_kanade(ccv_dense_matrix_t* a, ccv_dense_matrix_t* b, ccv_array_t* point_a, ccv_array_t** point_b, ccv_size_t win_size, int level, double min_eigen)
</code></pre>

<p><a href="https://en.wikipedia.org/wiki/Lucas%E2%80%93Kanade_Optical_Flow_Method">Lucas Kanade</a> optical flow implementation with image pyramid extension.</p>

<ul>
  <li><strong>a</strong>: the first frame</li>
  <li><strong>b</strong>: the next frame</li>
  <li><strong>point_a</strong>: the points in first frame, of