I've not had a chance to use these, but these do what you want? http://grass.itc.it/grass64/manuals/html64_user/r.thin.html http://grass.itc.it/grass64/manuals/html64_user/r.to.vect.html
Not spatial, but may also be of interest. http://wiki.inkscape.org/wiki/index.php/Tools http://wiki.inkscape.org/wiki/index.php/Potrace Doug Newcomb USFWS Raleigh, NC 919-856-4520 ext. 14 [email protected] --------------------------------------------------------------------------------------------------------- The opinions I express are my own and are not representative of the official policy of the U.S.Fish and Wildlife Service or Dept. of the Interior. Life is too short for undocumented, proprietary data formats. "Landon Blake" <[email protected] m> To Sent by: "OSGeo Discussions" discuss-boun...@l <[email protected]> ists.osgeo.org cc Subject 02/04/2010 02:40 [OSGeo-Discuss] Open Source Raster PM Tracing - What Is Available? Please respond to OSGeo Discussions <[email protected] geo.org> Is anyone aware of a raster tracing tool for geospatial users released under an open source license? I’m looking for something similar to: http://www.vextrasoft.com/vextractor.htm I found the Autotrace program (http://autotrace.sourceforge.net/), but it seems to be a little more limited, and not geared to the GIS user. Vextractor allows you to georeference your tracing output and supports export of the traced vectors to SHP and DXF. The price for a single license of Vextractor isn’t bad ($99 US), but I’d love to find a similar open source project. I’ve thought about trying to write something up using JTS, but I know it would be a very challenging project. I’d like to know if any of you have worked on open source projects in this area. Thanks for any info. Landon Warning: Information provided via electronic media is not guaranteed against defects including translation and transmission errors. If the reader is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this information in error, please notify the sender immediately._______________________________________________ Discuss mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/discuss
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