pan><span class="p">(</span><span class="n">neighbors</span><span class="p">[</span><span class="n">np</span><span class="o">.</span><span class="n">newaxis</span><span class="p">,</span> <span class="p">:,</span> <span class="p">:],</span> <span class="mi">1</span><span class="p">,</span> <span class="n">axis</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
    <span class="n">fc_diff</span> <span class="o">=</span> <span class="n">fc_copy</span> <span class="o">-</span> <spa