<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r74704289">src/mlpack/methods/edge_boxes/feature_extraction.hpp</a>:</p>
<pre style='color:#555'>&gt; +  void DistanceTransform1D(const arma::vec&amp; f, const size_t n,
&gt; +                           const double inf, arma::vec&amp; d);
&gt; +  
&gt; +  /**
&gt; +   * Computes distance transform of a 2D array
&gt; +   * @param Im input array whose distance transform is to be found.
&gt; +   * @param inf a large double value.
&gt; +   */
&gt; +  void DistanceTransform2D(MatType &amp;Im, const double inf);
&gt; +
&gt; +  /**
&gt; +   * euclidean distance transform of binary Image using squared distance
&gt; +   * This is the discription of the paper which discribes the approach 
&gt; +   * for this algorithm : Distance Transforms of Sampled Functions,
&gt; +   * P. Felzenszwalb, D. Huttenlocher
&gt; +   * Theory of Computing, Vol. 8, No. 19, September 2012
</pre>
<p>Can you use the doxygen style to cite the paper. Here is an example: <a href="https://github.com/mlpack/mlpack/blob/master/src/mlpack/methods/ann/layer/dropout_layer.hpp">https://github.com/mlpack/mlpack/blob/master/src/mlpack/methods/ann/layer/dropout_layer.hpp</a></p>

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