<gegl>

  <node operation='gegl:matting-levin'>

    <params>

      <param name='levels'>1</param>

      <param name='active_levels'>1</param>

    </params>

    <node operation='gegl:load'>

      <params>

        <param name='path'>data/duck_scribble.png</param>

      </params>

    </node>

  </node>

  <node operation='gegl:load'>

    <params>

      <param name='path'>data/duck.png</param>

    </params>

  </node>

</gegl>