[GRASS-user] imagery data: geometry shift validation

GRASS GRASS user
1

Hi,

one colleague of mine was asking me about possibilities in GRASS how
to validate geometry shift in imagery data similar to [1]. I would
appreciate any tips where to start, thanks! Martin

[1] https://geoacca.enveo.at/about/

--
Martin Landa
http://geo.fsv.cvut.cz/gwiki/Landa
http://gismentors.cz/mentors/landa

2

Hi Martin,

Maybe this:
https://grass.osgeo.org/grass72/manuals/addons/i.points.auto.html
can be of help?

Cheers
Stefan

-----Original Message-----
From: grass-user [mailto:grass-user-bounces@lists.osgeo.org] On Behalf Of Martin Landa
Sent: søndag 3. desember 2017 19.37
To: GRASS users list <grass-user@lists.osgeo.org>
Subject: [GRASS-user] imagery data: geometry shift validation

Hi,

one colleague of mine was asking me about possibilities in GRASS how to validate geometry shift in imagery data similar to [1]. I would appreciate any tips where to start, thanks! Martin

[1] https://geoacca.enveo.at/about/

--
Martin Landa
http://geo.fsv.cvut.cz/gwiki/Landa
http://gismentors.cz/mentors/landa
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3

Hi Martin

We did similar work to correct the geometry shift of time series of AVHRR data. Entire workflow was developed in GRASS GIS except for the homologous point extraction, for which we used SIFT algorithm implemented in Orfeo Toolbox.

You can find the details in this paper [1] including the scripts.

[1] http://www.mdpi.com/2072-4292/8/3/169/htm

regards

Sajid

···

On Sun, Dec 3, 2017 at 7:36 PM, Martin Landa <landa.martin@gmail.com> wrote:

Hi,

one colleague of mine was asking me about possibilities in GRASS how
to validate geometry shift in imagery data similar to [1]. I would
appreciate any tips where to start, thanks! Martin

[1] https://geoacca.enveo.at/about/

–
Martin Landa
http://geo.fsv.cvut.cz/gwiki/Landa
http://gismentors.cz/mentors/landa

grass-user mailing list
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4

Dear Sajid,

2017-12-04 10:04 GMT+01:00 Sajid Pareeth <spareeth@gmail.com>:

We did similar work to correct the geometry shift of time series of AVHRR
data. Entire workflow was developed in GRASS GIS except for the homologous
point extraction, for which we used SIFT algorithm implemented in Orfeo
Toolbox.

thanks, very interesting! BTW, is the bash script somewhere accessible
as a plain text file (mdpi offers only images :-(, eg. [1])?

Martin

[1] http://www.mdpi.com/remotesensing/remotesensing-08-00169/article_deploy/html/images/remotesensing-08-00169-i004.png

--
Martin Landa
http://geo.fsv.cvut.cz/gwiki/Landa
http://gismentors.cz/mentors/landa

5

Hi Martin

(attachments)

AppendixA.py (4.94 KB)
AppendixB.sh (7.07 KB)

···

thanks, very interesting! BTW, is the bash script somewhere accessible
as a plain text file (mdpi offers only images :-(, eg. [1])?

Attached those scripts given in the paper.

I haven’t provided them in any public repo yet.

regards

Sajid

6

Hi Sajid,

2017-12-04 16:26 GMT+01:00 Sajid Pareeth <spareeth@gmail.com>:

Attached those scripts given in the paper.
I haven't provided them in any public repo yet.

thanks! Martin

--
Martin Landa
http://geo.fsv.cvut.cz/gwiki/Landa
http://gismentors.cz/mentors/landa