<p>In <a href="https://github.com/mlpack/mlpack/pull/696#discussion_r67198515">src/mlpack/methods/edge_boxes/feature_extraction_impl.hpp</a>:</p>
<pre style='color:#555'>> + // transform along rows
> + for (size_t y = 0; y < im.n_rows; y++)
> + {
> + f.subvec(0, im.n_cols - 1) = im.row(y).t();
> + arma::vec d = this->DistanceTransform1D(f, im.n_cols, inf);
> + im.row(y) = d.t();
> + }
> +}
> +
> +/* euclidean distance transform of binary image using squared distance */
> +template<typename MatType, typename CubeType>
> +MatType StructuredForests<MatType, CubeType>::
> +DistanceTransformImage(MatType const &im, double on)
> +{
> + //need a large value but not infinity.
> + double inf = 999999.99;
</pre>
<p>As zoq mentions, we can define a const value for inf and -inf(DBL_MAX and -DBL_MAX).</p>
<pre><code>constexpr double DBL_MAX = std::numeric_limits<double>::max();
constexpr double DBL_MIN = std::numeric_limits<double>::min();
</code></pre>
<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/mlpack/mlpack/pull/696/files/b38b688edfc4c2ee8bf461240f8384a70575d3a4#r67198515">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe/AJ4bFI2owORC9-qIY3-DAjq_dr4TWht6ks5qMCq7gaJpZM4I1lnr">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AJ4bFDeQthkDmKvw0CFXq9cMo4Hcg5Cgks5qMCq7gaJpZM4I1lnr.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
<link itemprop="url" href="https://github.com/mlpack/mlpack/pull/696/files/b38b688edfc4c2ee8bf461240f8384a70575d3a4#r67198515"></link>
<meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>