<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r74704039">src/mlpack/methods/edge_boxes/feature_extraction_impl.hpp</a>:</p>
<pre style='color:#555'>> + FtrDim = arma::vec(2);
> +
> + const size_t shrink = this->params.Shrink();
> + const size_t pSize = this->params.PSize();
> + const size_t numCell = this->params.NumCell();
> + const size_t numOrient = this->params.NumOrient();
> + const size_t nColorCh = params.RGBD() == 0 ? 3 : 4;
> + const size_t nCh = nColorCh + 2 * (1 + numOrient);
> + FtrDim[0] = std::pow((pSize / shrink) , 2) * nCh;
> + FtrDim[1] = std::pow(numCell , 2) * (std::pow (numCell, 2) - 1) / 2 * nCh;
> +}
> +
> +
> +template<typename MatType, typename CubeType>
> +void StructuredForests<MatType, CubeType>::
> +DistanceTransform1D(const arma::vec& f, const size_t n, const double inf,
</pre>
<p>Is this function from the "Distance Transforms of Sampled Functions" paper? If that's the case, we should cite the paper, as we did here: <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>. Also do you think, we could define inf inside the function and probably use DBL_MAX and -DBL_MAX instead of 999999.99?</p>
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