<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'>&gt; +  
&gt; +  in1.slice(0) = output;
&gt; +  
&gt; +  arma::mat out_border;
&gt; +  out_border &lt;&lt; 2 &lt;&lt; 2 &lt;&lt; 1 &lt;&lt; 2 &lt;&lt; 2 &lt;&lt; arma::endr
&gt; +             &lt;&lt; 2 &lt;&lt; 2 &lt;&lt; 1 &lt;&lt; 2 &lt;&lt; 2 &lt;&lt; arma::endr
&gt; +             &lt;&lt; 1 &lt;&lt; 1 &lt;&lt; 0 &lt;&lt; 1 &lt;&lt; 1 &lt;&lt; arma::endr
&gt; +             &lt;&lt; 0 &lt;&lt; 0 &lt;&lt; 1 &lt;&lt; 2 &lt;&lt; 2 &lt;&lt; arma::endr
&gt; +             &lt;&lt; 0 &lt;&lt; 0 &lt;&lt; 1 &lt;&lt; 2 &lt;&lt; 2;
&gt; +  arma::cube out_b(out_border.n_rows, out_border.n_cols, 1);
&gt; +  out_b.slice(0) = out_border;
&gt; +  CopyMakeBorderTest(in1, out_b, SF);
&gt; +
&gt; +  arma::mat out_conv;
&gt; +
&gt; +  out_conv &lt;&lt; 1.20987 &lt;&lt; 1.25925 &lt;&lt; 1.30864 &lt;&lt; arma::endr
</pre>
<p>Where do our values come from?</p>

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