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Is there a module in GRASS or SAGA (or a alternative open program) to do a topographic correction of a landsat image to enhance the land use classification?

Thanks! Martin

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You might want to have a look at the GRASS addon: i.topo.corr: grass.osgeo.org/wiki/GRASS_AddOns#i.topo.corr. There's a wiki page devoted to atmospheric correction: grass.osgeo.org/wiki/Atmospheric_correction –  Micha Jul 5 '12 at 17:05
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3 Answers 3

up vote 2 down vote accepted

For SAGA:

Module Name
Topographic Correction
Menu Terrain Analysis > Lighting

Note that you can always search for a module by right clicking "module library"in the workspace tab.

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Oh, thats easy! :) Thanks –  MAP Jul 6 '12 at 10:43
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Not really a direct answer, but I can't make comments. I haven't used any of the tools on the page but have you had a look at the GRASS image processing page? It lists GRASS tools for classification and image correction.

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