Continuing my obsession with interesting free stuff...
insight3d lets you create 3D models from photographs. You give it a series of photos of a real scene (e.g., of a building), it automatically matches them and then calculates positions in space from which each photo has been taken (plus camera’s optical parameters) along with a 3D pointcloud of the scene. You can then use insight3d’s modeling tools to create textured polygonal model.
If this works as well as it says it does [I haven't tried it out yet], it could prove really useful in collecting survey data for tracking purposes really really quick... we could totally skip the process of measuring everything in detail.
More info and download links HERE and online tutorial HERE
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