 opening <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  closing <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  filter <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  erode <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  dilate <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  watershed <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  tolerance <span class="op">=</spa