[Freegis-list] multi spectral images

[Markus Neteler]

On Wed, Sep 25, 2002 at 04:07:58PM +1000, G. Orme wrote:
> 
> 
> I have a multi spectral image of Mars that I need to work on. Are there
> any good programs for this. ENVI is one but you can't save the results in
> the evaluation edition.

GRASS GIS may be an option for you. It supports multi spectral image
analysis such as image classification (radiometric and combined
radiometric/geometric, unsupervised and supervised), image composites,
principal component analysis, fourier transformations, ortho rectification
for aerial images etc etc.

For commands see here:
http://grass.itc.it/gdp/html_grass5/imagery.html

Cheers

 Markus