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Open Source GIS: A Grass GIS Approach Helena Mitasova, Markus Neteler
Publisher: Springer

PS: Interesting thoughts on Open Source GIS by Bill Dollins on his cool blog. Posted by GIS talk On Tuesday, May 24, 2011. To get used to the rather new Python scripting in GRASS GIS, I wrote a Python script to preprocess the images. Open source GIS: a GRASS GIS approach. Third edition . Open Source GIS: A GRASS GIS Approach. Open Source GIS: A GRASS GIS Approach on amazon.com got rave reviews, too, and looks promising. Markus Neteler, Helena Mitasova. Here is a free manual to get me started. As approach I chose to apply edge detection algorithms to the satellite images, namely the Sobel filter. I also HIGHLY recommend purchasing: M. Open.source.GIS.a.GRASS.GIS.approach.pdf. Open Source GIS Conference - OSGIS 2011.