[OSGeo-Discuss] Creating Value from Raster Data

2011-01-04 Thread Landon Blake
I'm working on a magazine article for ACSM Bulliten entitled Creating Value From Raster Data. The target audience will be land surveyors. I was hoping some of the OSGeo guys would be able to help me with a few questions as I do my research for the article: - Are there any open source

Re: [OSGeo-Discuss] Creating Value from Raster Data

2011-01-04 Thread Noli Sicad
Hi Landon, - Does anyone know of research or work being done with the development of open source algorithms and programming libraries to enable automated feature creation from raster data? Does it means to produce a polygon feature layer from a raster? GDAL has this function -

Re: [OSGeo-Discuss] Creating Value from Raster Data

2011-01-04 Thread Alex Mandel
One might argue that slippy maps and tile caches have added a lot of value to raster data or at least demand. But more directly on the topic in addition to GDAL. GRASS http://www.perrygeo.net/wordpress/?p=104 See pg 115+ from Open Source GIS A GRASS Approach (Neteler, Mitasova) More generically

Re: [OSGeo-Discuss] Creating Value from Raster Data

2011-01-04 Thread Noli Sicad
Just to add what Alex mentioned already, here a link for GRASS Image classification (how to). http://grass.osgeo.org/wiki/Image_classification In reference to these works, * Micha Silver: Analyzing acacia tree health in the Arava with GRASS GIS * Perrygeo: Impervious surface

Re: [OSGeo-Discuss] Creating Value from Raster Data

2011-01-04 Thread Paolo Cavallini
Il giorno mer, 05/01/2011 alle 14.14 +1100, Noli Sicad ha scritto: Just to add what Alex mentioned already, here a link for GRASS Image classification (how to). http://grass.osgeo.org/wiki/Image_classification Also, have a look to Orfeo ToolBox (OTB), who also has a QGIS plugin,