Johan,
What you need is a photogrammetric package. I only know one open source
package. Look at http://www.efoto.eng.uerj.br/en:start and download the
latest version. It has all you need to accomplish your task, includning a
modul for DEM (digital elevation model) extraction from the stereo pair. Yoy
dont need dual screens, fancy cards and polaroid glasses. A split screen or
re/blue glasses like som childrens books had when I was a kid will do. Note:
I found this package recentlly and had no time to test it, but I am going
to. There used to be another free package, photomodeler, but i don't think
it is free anymore and anyway it is phocused on terrestrial and not on
aerial images.
Ulf Almroth
----- Original Message -----
From: "Johan Nilsson" <[email protected]>
To: <[email protected]>
Sent: Monday, April 26, 2010 3:01 PM
Subject: [Qgis-user] IR-airphoto and 3D
I have very little knowlight of terminology in this area.
Is there a possibility if you have 2 semi-overlapping IR-photo, with
known flight-altitude, distance between picture, camera-model and
pictures corners coordinat, to make a 3D model with height-data?
To use 2 pictures to get "stereo-vision", requere quite special
dual-screens and gfx-card and polaroid-glasses, so to skip this, are
there some other software that can pick altitude for every pixel in
the area there 2 IR-photo cover?.
If not QGIS have this, is there any other open source-applications to
use, for instance GRASS that manage this, and what is the name of the
process to make a 3D-map from at leaste 2 airphoto in GIS-terminology?
/Cheers
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