PACKAGES required:

1. OSSIM, found at ossim.org.  This is the core geospatial image and corrdinate processing ngine used by ossimPlanet

2. libwms.  Used for WMS access.  This uses libcurl for the http protocol.

3. OpenSceneGraph.  Found at http://www.openscenegraph.org.  This is used for the 3-D visualization.