Re: [GRASS-user] Geometric correction with GRASS

Josep Sitjar Tue, 15 Jan 2013 07:16:51 -0800

Thanks to all for your comments, are very helpful for me.
I will work on it.

Regards,

Josep

On 01/15/2013 03:34 PM, Margherita Di Leo wrote:

Hi Josep,

maybe OSSIM can be of use: http://trac.osgeo.org/ossim/wiki/orthorectification

HTH,

madi

On Tue, Jan 15, 2013 at 1:05 PM, Josep Sitjar <[email protected]> wrote:

OK Moritz, thanks for the comment.
While the linewise ortho-rectification of satellite data is not implemented, do you know another open source solution to perform this task?

Thanks,

On 01/15/2013 12:09 PM, Moritz Lennert wrote:
On 15/01/13 10:44, Nikos Alexandris wrote:

Josep:

Hi,

Hi Josep!

I'm working with an SPOT scene, which is preprocessed at the level 1A.
Now I need to do a geometric correction of this scene, not only with
control points but also with a Digital Terrain Model. It's possible to
do this in GRASS? How?

Of course it is possible. Please, get your grip on the respective GRASS-wiki
page and the related manuals.

Pointers:

<http://grasswiki.osgeo.org/wiki/Georeferencing>

and

<http://grass.osgeo.org/grass64/manuals/gm_georect.html>
<http://grass.osgeo.org/grass64/manuals/wxGUI.GCP_Manager.html>

and, of course<http://grass.osgeo.org/grass64/manuals/i.ortho.photo.html>

i.ortho.photo is used for aerial photography, not for satellite imagery. There is currently no orthorectification of satellite images in GRASS. It is on the ToDo list though: http://trac.osgeo.org/grass/wiki/Grass7/ImageryLib => "Implement/finish linewise ortho-rectification of satellite data"

Moritz
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Josep Sitjar
Técnico SIG

Tel. (34)972418039
www.sigte.udg.edu

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Margherita DI LEO

Postdoctoral Researcher

European Commission - DG JRC

Institute for Environment and Sustainability (IES). Unit H03 – FRC

Via Fermi, 2749

I-21027 Ispra (VA) - Italy - TP 261

Tel. +39 0332 78 3600

[email protected]

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.

Josep Sitjar Técnico SIG
Tel. (34)972418039 www.sigte.udg.edu

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