Development of augmented BIM models for built environment management

Traditional surveys in the built environment are time-consuming and usually result in enormous amounts of data, that are difficult to manage and contains bias. Therefore, BIM modeling of both geometries and related information leads to inconsistent, incomplete, or the other way around highly detailed models that need to be reworked afterwards, slowing the design process. The proposed methodology combines point cloud surveying technique, photogrammetry, and BIM within a game engine platform to define a workflow for an incremental model semantic enrichment that leads to an augmented BIM environment. The case study prototype allows stepwise accurate integration of detailed BIM objects by easing positioning them in the scene in accordance with the overlapped aligned images, giving the possibility of model enrichment only when it is required.