OSSIM（Open Source Software Image Map）是一个用于遥感、图像处理、地理信息系统、摄影测量领域的高性能软件。OSSIM作为一个成熟的开源软件库-OSSIM has a plugin mechanism for adding external functionality. If you are building the software from source you will need to add the ossim_plugins module. Frank Warmerdam s GDAL library is one example of an OSSIM plugin. If the user reads in a file that is not handled in the OSSIM base library it will use GDAL to translate it into OSSIM. This document includes relevant information about setting up you ossim plugins directory so that OSSIM plugins are automatically detected and loaded.