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Hello all, hello Markus,<br>
<br>
I would like to test the rectify module, too. I have a lot of scanned
air photographs from the pyrenees...<br>
<br>
For this I would love to have some instructions - for dummies - how to
compile new modules into my system. I've started now, after some years
os wishing it, with GRASS 6.0.2 on a fast and heavy of memory machine
running with SuSe 10.0, tryed to compile "everything" and had some
problems... but it works fine....<br>
<br>
thanks to all developpers for their good work!<br>
<br>
Manuel<br>
<br>
<br>
<br>
Markus Neteler schrieb:<br>
<blockquote type="cite" cite="mid20051216201115.GF16982@thuille.itc.it">
<pre wrap="">hi,
a student of us has implemented improved versions of
i.points and i.rectify based on previous work as published
in our last year's Bangkok paper.
The new version
- use FFT correlation to automatically search for ground
control points in a user given window pair (so, just zoom
more or less the same zone in the master and the slave
image)
- do this for the entire stripe of images
- bad GCPs are identified and eliminated
- run the modified i.rectify to rectify the entire stripe.
We are using this to geocode historical images. I still
have to cleanup the code to the current coding standards,
then I need a beta tester :-)
If course you can also work with just 2 overlapping images
and enjoy the automated GCP search.
Interested?
Markus
On Fri, Dec 16, 2005 at 03:13:03PM +0100, Wolfgang Zillig wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I'm not sure if this helps for my problem (perhaps I was not clear
enough in my description). The problem is, that I have one original
images which I want to use as reference and all others are more or less
deformed but no one at the same level. So I think I will have mark my
reference points in all deformed images. When I understand right
grouping is good, when you have many images whith the same deformation,
or am I wrong?
Wolfgang
Hamish schrieb:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">I need to rectify several images in the next time. Is there a way to
automatize this procedure a little bit? I have the "original" image and
then about 10 to 20 images which needs to be corrected that they refer
to the original one. I thought of something like saving the correction
points of the original image to an file, so that I don't need to mark
again (the reference points will be the same for all images) and I only
need to specify them in the images which needs to be rectified.
</pre>
</blockquote>
<pre wrap="">
Add all the images to a group, then rectify the lot.
i.group input=name[,name,...]
i.rectify -a
Hamish
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dr. Manuel Seeger
Wiss. Assistent Scientific Assistant
Physische Geographie Dpt. of Physical Geography
FB VI - Geographie/Geowissenschaften Geography/Geosciences
Universität Trier University of Trier
D - 54286 Trier
Tel.: +49-651-201 4557
Fax: +49-651-201 3976
Web: <a class="moz-txt-link-freetext" href="http://www.uni-trier.de/uni/fb6/geographie/mitarbeiter/Seeger/">http://www.uni-trier.de/uni/fb6/geographie/mitarbeiter/Seeger/</a>
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