> 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?. >> >
just to be sure, what kind of result are you hoping? a DEM map with the altitude for each pixel, or just to watch your area in 3D? if you just want to wach your area in 3d, you can take a look at http://grass.osgeo.org/wiki/Stereo_anaglyphs! just consider that your 2 IR-photo are the result of step 1 to 3 ... so you will have to do: 1. "ppmtorgb3 left.ppm" → Creates from left.ppm the files left.red, left.green, left.blue 2. "ppmtorgb3 right.ppm" → Creates from right.ppm the files right.red, right.green, right.blue 3. "rgb3toppm left.red right.green right.blue > myfirstanaglyph.ppm" 4. Put on the red-green glasses and view myfirstanagly.ppm with your favourite image viewer. (ppmtorgb3 is part of the netpbm software http://netpbm.sourceforge.net/) Sylvain Maillard Doctorant en Sciences de l'Environnement Laboratoire Chimie Provence - UMR 6264 / Université de Provence la Tour du Valat - Centre de recherche pour la conservation des zones humides méditerranéennes Le Sambuc 13200 Arles France tél:04.90.97.29.79 fax:04.90.97.20.19 www.tourduvalat.org
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