RailwayRouteOptimization/scripts/Draw/Image/doc/Image_proc_en.html

<ol>
  <li>Choose the image file which you want to insert.</li>
  <li>Enter the desired height or width for the image in drawing units in the
  options tool bar.</li>
  <li>Type a rotation angle in the options tool bar.</li>
  <li>Specify the insertion point of the image. That is the left bottom corner
  of the image.</li>
</ol>