ame and is
required here because the <code>vl_mser</code> code assumes that the row index
is the first index, but the normal image convention assumes that this is the
<code>x</code> (column) index.</p>

<p>Plotting the MSERs themselves is a bit more involved as they have
arbitrary shape.  To this end, we exploit two
functions: <code>vl_erfill</code>, which, given an image and a region
seed, returns a list of the pixels belonging to that region, and
the MATLAB built-in <code>contour</code>, which draws the c