pan class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">mask</span><span class="o">.</span><span class="n">shape</span><span class="p">)</span> <span class="o">==</span> <span class="mi">3</span><span class="p">:</span>
                <span class="n">mask</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">any</span><span class="p">(</span><span class="n">mask</span><span class="p">,</span> <span class="n">axis</span><span clas