GRASS (the geographic Resource Analysis Support system) is a raster and vector based GIS (geographic information system) GIS, For image http://www.aliyun.com/zixun/aggregation/34332.html "> processing system, graphic production system, Space Modeling system." It includes many raster data processing modules, vector data processing, image rendering on display or paper, multispectral image geocoding and processing, point management and general data management. It also has digitizer, scanner interface connection, support PostgreSQL, DBF and ODBC connection database connection.
 
 
 
GRASS GIS 6.4.2 This version includes more than 760 updates to 6.4.1 source code. Wxpython's graphical user interface (Wxgui) has updated many new features and tools. Python is now a fully supported scripting language. This release debuted with 10 new modules, a new GUI mapping tool, a new graphical user interface, an object-oriented modeling environment, improved infrastructure installation, and community-provided add-on modules.
 
Software Information: http://grass.osgeo.org/
 
Screenshot: http://grass.osgeo.org/screenshots/index.php
 
Download Address: http://grass.osgeo.org/download/software.php#g64x