Hot answers tagged photogrammetry
Opticks Image Segmentation Opticks is an open source Imagery Analysis Software. It will perform segmentation on an image and save the results to a Shapefile. The link has a short segmentation tutorial. The software runs on Windows 32/64, Linux and Solaris.
There is something better! Check this out: http://www.123dapp.com/. You can use 123Catch to combine many photo's into a 3D model. Then use 123Sculpt to make the model better! Alternately, try this stuff for a home-made solution: http://www.visual-experiments.com/ the guy who put it together has gone to work with Microsoft, so he's doing good things!
Open Aerial Map's wiki (http://openaerialmap.org/Processing) suggests GRASS GIS' i.ortho.photo and related modules (per Micha's suggestion). OSSIM http://trac.osgeo.org/ossim/ - probably best bet. http://www.digilab.uni-hannover.de/index.html - looks like it would require some development work to be useful http://www.orfeo-toolbox.org/otb/ - very active ...
Multipatch feature are supported 3D building. So you can try to do this method. plz refer to this link. http://resources.arcgis.com/en/help/main/10.1/index.html#//00q80000007n000000
So if I assume the following variables: x = camera sensor x size y = camera sensor y size f = focal length h = height above ground And I am looking for: ay = photo y ground distance ax = photo x ground distance Would these formulas work? making sure that I compare the proper units to the proper units. (f/h)*x = ax (f/h)*y = ay Does this make ...
There are successful solutions available based on eCognition, for instance: http://www.trimble.com/imaging/pdf/TM18_FINAL_INPHO.pdf eCognition offers the possibility to translate your mind model (why you see buildings in our images) into computer understandable code (= rule set). The eCognition Developer is the environment to create rule set. A good rule ...
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