[R-sig-Geo] Feature Extraction - object based image analysis

[rick reeves]

If, by 'feature extraction', the colleague refers to classifying the 
raster imagery pixels into discrete categores (e.g., vegetation types),
I would suggest looking at the 'r.' and 'i.' components of  GRASS GIS, 
which of course integrates well with R.

Hope this helps.
Rick R

Rawlins, Barry G wrote:
> I have a colleague who is not familiar with R and we were discussing feature extraction from multiple images (air photos, satellite based etc.). He uses a commercial tool for feature extraction. Can anyone point me to a package in R that does this? I have done a search but not found such a function. It is not a procedure I am familiar with.
>
> Many thanks, Barry
>
> Dr Barry Rawlins
> Sustainable Soils Team Leader
> British Geological Survey
> Keyworth
> Nottingham
> NG12 5GG
> Direct tel: 0115 9363140
> Mobile: 0788 4235473
> homepage: http://barryrawlins.googlepages.com<http://barryrawlins.googlepages.com/>
>
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>   


-- 
Rick Reeves
Scientific Programmer/Analyst and Data Manager
National Center for Ecological Analysis and Synthesis
UC Santa Barbara
www.nceas.ucsb.edu
805 892 2533