1. A method of capturing three-dimensional (3D) information on a structure, comprising: obtaining a first image set containing images of the structure with at least one physical camera located at a first position, the first image set comprising one or more images; reconstructing 3D information from the first image set; obtaining 3D information from a virtual camera out of an existing global model of the structure; determining correspondences between the obtained 3D information and the reconstructed 3D information; determining camera motion between the obtained 3D information and the reconstructed 3D information from said correspondences; and updating the existing global model by entering the obtained 3D information using the determined camera motion.