Computer assisted reconstruction of buildings from photographic data

We present an approach to the reconstruction of 3D textured models of buildings starting from photographic data. We have defined a simple and easy to use interface that allows inexperienced users to be driven in the pro­cess of entering all the inputs (points, segments and so on, detected on the photo) necessary to define the geometry of the building. The basic building block is the rectangle, and mechanisms are provided, to make the interaction intuitive, fast (in the order of few minutes for reconstructing a simple model of few tens of quads), and leading to relatively precise results. The system then builds the corresponding mesh, previewing it directly using perspective textures, or resampling rectified texture to export the reconstructed model into a com­mon mesh format.