 class="va">img</span>,</span>
<span>  index <span class="op">=</span> <span class="st">"B"</span>,</span>
<span>  invert <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  fill_hull <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  threshold <span class="op">=</span> <span class="st">"Otsu"</span>,</span>
<span>  k <span class="op">=</span> <span class="fl">0.1</span>,</span>
<span>  windowsize <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span> 