<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r68501192">src/mlpack/methods/edge_boxes/feature_extraction_impl.hpp</a>:</p>
<pre style='color:#555'>> + * RGB must range in (0.0, 1.0).
> + * @param InImage Input Image in RGB color space.
> + * @param OutImage Ouptut Image in LUV color space.
> + */
> +template<typename MatType, typename CubeType>
> +void StructuredForests<MatType, CubeType>::
> +RGB2LUV(const CubeType& InImage, CubeType& OutImage,\
> + const arma::vec& table)
> +{
> + //assert type is double or float.
> +
> +
> + MatType rgb2xyz;
> + rgb2xyz << 0.430574 << 0.222015 << 0.020183 << arma::endr
> + << 0.341550 << 0.706655 << 0.129553 << arma::endr
> + << 0.178325 << 0.071330 << 0.939180;
</pre>
<p>I think what <a href="https://github.com/stereomatchingkiss" class="user-mention">@stereomatchingkiss</a> meant was, that <code>rgb2xyz</code> is unused, so we could delete the parameter.</p>
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