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Tran, H. (author), Khoshelham, K. (author), Kealy, A. (author), Díaz-Vilarino, L. (author)3D models of indoor environments are essential for many application domains such as navigation guidance, emergency management and a range of indoor location-based services. The principal components defined in different BIM standards contain not only building elements, such as floors, walls and doors, but also navigable spaces and their...conference paper 2017