Photogrammetric 2D/3D restitution of architectural elements and the integration of virtual models with his photographed real environment, using CAD, freeware software and conventional cameras

Abstract

This article shows a working method using CAD and free software to do the calibration process for a conventional digital camera to correct the distortion produced by the lens. It will continue with the 3D restitution of the main geometric elements of the projection, and finally, the spatial geometric reconstruction of the elements of interest appearing in the photo, without needing of topographical support. It will be also shown a method to make the integration of the three-dimensional model on the photograph of the environment in which the building will be constructed, so that, if it’s seen from the appropriate point of view, it will be perfectly integrated in the place of photography where it really should be, which is extremely useful when showing an architectural project.