[GRASS-user] image fusion in grasss 6.4.2

GRASS GRASS user
1

Dear all,

How can I do image fusion in grass gis 6.4.2?

Aparently i.pansharpen works fine on grass 7 only.

best wishes

--
Miltinho - mcr@rc.unesp.br
Laboratório de Ecologia Espacial e Conservação - LEEC
Depto de Ecologia - UNESP - Rio Claro
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Google citations http://scholar.google.com/citations?user=OWX_2eAAAAAJ

2

Hi,

How can I do image fusion in grass gis 6.4.2?

One can use the r.his module and the r.composite module.

For example, to make a shaded and colorized DEM:
r.his h_map=<DEM> i_map=<shaded_reliefr> r_map=terrain.red
g_map=terrain.green b_map=terrain.blue

Then to make a composite raster:
r.composite red=terrain.red green=terrain.green blue=terrain.blue
levels=32 output=shaded_color_DEM

Hope that helps get things rolling in the right direction.

Mark

3

On Tue, Jun 4, 2013 at 6:38 PM, miltinhoastronauta .
<miltinho.astronauta@gmail.com> wrote:

Dear all,

How can I do image fusion in grass gis 6.4.2?

Here a few pointers:

* http://grass.osgeo.org/grass64/manuals/i.fusion.brovey.html

* http://grasswiki.osgeo.org/wiki/Image_processing#Geometric_Enhancements_-_Image_Fusion_-_Pansharpening_-_Image_Segmentation

* http://wiki.awf.forst.uni-goettingen.de/wiki/index.php/Image_fusion_using_color_transformations

* Neteler, M., Grasso, D., Michelazzi, I., Miori, L., Merler, S.,
Furlanello, C., 2005. An integrated toolbox for image registration,
fusion and classification. International Journal of Geoinformatics.
Special Issue on FOSS/GRASS 2004 & GIS-IDEAS 2004 1, 51–61.
http://www.grassbook.org/neteler/papers/neteler2005_IJG_051-061_draft.pdf

Aparently i.pansharpen works fine on grass 7 only.

It is a new module integrating several approaches in one command.

Hope this helps
Markus