<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r74704578">src/mlpack/tests/edge_boxes_test.cpp</a>:</p>
<pre style='color:#555'>> +
> + in1.slice(0) = output;
> +
> + arma::mat out_border;
> + out_border << 2 << 2 << 1 << 2 << 2 << arma::endr
> + << 2 << 2 << 1 << 2 << 2 << arma::endr
> + << 1 << 1 << 0 << 1 << 1 << arma::endr
> + << 0 << 0 << 1 << 2 << 2 << arma::endr
> + << 0 << 0 << 1 << 2 << 2;
> + arma::cube out_b(out_border.n_rows, out_border.n_cols, 1);
> + out_b.slice(0) = out_border;
> + CopyMakeBorderTest(in1, out_b, SF);
> +
> + arma::mat out_conv;
> +
> + out_conv << 1.20987 << 1.25925 << 1.30864 << arma::endr
</pre>
<p>Where do our values come from?</p>
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