<span class="p">;</span> <span class="n">clf</span> <span class="p">;</span>
<span class="n">imagesc</span><span class="p">(</span><span class="n">I</span><span class="p">)</span> <span class="p">;</span> <span class="n">axis</span> <span class="n">off</span> <span class="p">;</span> <span class="n">axis</span> <span class="n">equal</span> <span class="p">;</span> <span class="n">axis</span> <span class="n">tight</span> <span class="p">;</span>
<span class="n">colormap</span><span class="p">(</span><span cl