On 31/07/08 20:39, Nikos Alexandris wrote:
Any Open Source alternatives for image segmentation?
SAGA GIS has some segmentation algorithms included:
http://www.saga-gis.uni-goettingen.de/html/index.php
Moritz
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Nikos Alexandris pisze:
how do Open Source Professionals image normalisation for aerial
photos... let's say 300 photos? I cannot imagine that people sit-down
and extract psuedoinvariant targets for 300 photos (except they are
payed a lot for that).
Nikos,
Have you looked at OSSIM? Not that
On Fri, 2008-08-01 at 12:01 +0200, Maciej Sieczka wrote:
Nikos Alexandris pisze:
how do Open Source Professionals image normalisation for aerial
photos... let's say 300 photos? I cannot imagine that people sit-down
and extract psuedoinvariant targets for 300 photos (except they are
payed
On Fri, 2008-08-01 at 15:29 +0200, G. Allegri wrote:
A collegue sent me this ticks to run OSSIM on Ubuntu 7.10:
http://trac.osgeo.org/ossim/wiki/Ubuntu-7.10Build
after every make make install, give a ldconfig and start another
shell to continue the
After examining the mosaic I found multiple and big differences. I
conclude that the producer did not perform any radiometric nor
topographic corrections. It is a collage and not a mosaic :-)
Is this the way it should be?
Thank you,
Nikos
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Nikos:
Performing relative radiometric normalization is a *requirement* of
applying a single classification to multiple images (also for change
detection). Unfortunately, it is not an algorithm that is available (to
my knowledge), out-of-the-box, on ANY remote sensing platform (GRASS,
On Thu, 2008-07-31 at 11:17 -0700, Jonathan Greenberg wrote:
Nikos:
Performing relative radiometric normalization is a *requirement* of
applying a single classification to multiple images (also for change
detection). Unfortunately, it is not an algorithm that is available (to
my
I am still struggling with this. In theory it sounds easy but when it
comes to the point it's quite hard considering that we don't have the
raw data. Any other ideas?
Thank you,
Nikos
On Wed, 2008-07-16 at 16:50 +0200, Nikos Alexandris wrote:
[...]
My workflow
1. Stretch colour orthophotos
Dear GRASSers,
I would like to have a confirmation that my feet are on the ground when
I try to realise the following work-flow with G-FOSS. I want to classify
forest gaps out of orthophotos (...actually it's not my job but I want
to help somebody who intented to do all by hand or accept what
