[GRASS-user] detecting olive trees from satellite imagery

Margherita Di Leo diregola at gmail.com
Wed Oct 29 08:32:06 PDT 2014


On Wed, Oct 29, 2014 at 3:35 PM, Rich Shepard <rshepard at appl-ecosys.com>

>   Is the reflected color spectrum of olive trees different from vegetation
> that would normally be expected outside the orchards?
>   If so, I would suggest a training set obtained by visiting a few olive
> orchards and recording the geographic coordinates of the center as well as
> an average radius (or the sides of a rectangular orchard). The satellite
> band values for those location can then be used to classify vegetation and
> find other olive orchards.
>   Of course, you've probably already done this, and it's been about 30
> years
> since I last worked with satellite imagery so I'm not current on the
> technologies.

 Thank you very much for your hint. I should have mentioned that I made
tentatives also in this direction. Unfortunately, so far this approach
didn't allow me to tell olive trees from other vegetation types.

Best regards,

Dr. Margherita DI LEO
Scientific / technical project officer

European Commission - DG JRC
Institute for Environment and Sustainability (IES)
Via Fermi, 2749
I-21027 Ispra (VA) - Italy - TP 261

Tel. +39 0332 78 3600
margherita.di-leo at jrc.ec.europa.eu

Disclaimer: The views expressed are purely those of the writer and may not
in any circumstance be regarded as stating an official position of the
European Commission.
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