="n">pfx</span><span class="p">,</span><span class="s">&#39;spots.tmp&#39;</span><span class="p">)</span> <span class="p">;</span>

<span class="n">I</span> <span class="p">=</span> <span class="n">imread</span><span class="p">(</span><span class="n">p_img</span><span class="p">)</span> <span class="p">;</span>
<span class="n">I</span> <span class="p">=</span> <span class="n">uint8</span><span class="p">(</span><span class="n">rgb2gray</span><span class="p">(</span><span class="n">I</span><span class="p">))