<image>
  <stack>
      <filter type='gegl:brightness-contrast'>
         <params>
              <param name='contrast'>1.4</param>
         </params>
      </filter>
      <filter type='gegl:unsharp-mask'>
          <params>
              <param name='std-dev'>4.8</param>
              <param name='scale'>2.0</param>
          </params>
      </filter>
      <layer src='data/romedalen.jpg'/>
  </stack>
</image>