It is widely acknowledged that the integration of BIM and GIS data a crucial step forward for future 3D city modelling, but most research conducted so far has covered only high-level semantic aspects GIS-BIM integration. This paper presents results GeoBIM project, which tackled three problems focussing instead on involving geometry processing: (i) automated processing complex architectural IFC models; (ii) existing subsoil in BIM; (iii) georeferencing models their use software. All have been...

As we realize that spend most of our time in increasingly complex indoor environments, applications to assist activities (e.g. guidance) have gained a lot attention the recent years. The advances ubiquitous computing made possible development several spatial models intending support context-aware and fine-grained navigation systems. However, available often rely on simplified representations 2D plans) ignore features furniture), thereby missing reflect complexity environment. In this paper,...

Abstract. Geographic information and building modelling both model buildings infrastructure, but the way in which they are modelled is usually complimentary BIM-GIS integration widely considered as a forward for domains. For one, more detailed BIM data can feed general GIS provide context that necessary to data. While previous studies have focused on theoretical aspects of such an at schema level, this paper we focus explaining geometric topological issues found while trying develop software...

In spatial science and urban applications, “space" is presented by multiple disciplines as a notion referencing our living environment. Space used general term to help understand particular characteristics of the However, definition perception space varies these variations have be harmonised. For example, may diverse definitions classification, same environment abstracted/modelled contradicting notions space, which can lead inconsistencies misunderstandings. this paper, we seek investigate...

Abstract Contemporary public buildings are becoming conglomerates of open, semi‐open and closed spaces, with indoor, outdoor underground sections. For humans robots to navigate seamlessly through such environments, new flexible approaches need be developed. Navigation systems generally rely on a network (nodes edges) as an abstraction underlying space availability. However, indoor networks have different origins. While subdivision approaches, current utilize road‐based approaches. Linking...

Abstract. 3D modelling of precincts and cities has significantly advanced in the last decades, as we move towards concept Digital Twin. Many city models have been created but a large portion them neglect representing terrain buildings accurately. Very often surface is either considered planar or not represented. On other hand, many Terrain Models (DTM) 2.5D triangular irregular networks (TIN) grids for different applications such water management, sign view shadow computation, tourism, land...

Seamless navigation has attracted lots of attention and many methods have been reported in the literature or made available as commercial applications. The process can be interpreted a continuous movement 3D objects from one unoccupied indoor/outdoor space to another. From technical perspective, model is critical components that should perform successful navigation. A major approach build unified support seamless path computation linking indoor networks outdoor road/street-based networks....

Abstract 3D indoor navigation in multi‐story buildings and under changing environments is still difficult to perform. models of are commonly not available or outdated. point clouds turned out be a very practical way capture interior spaces provide notion an empty space. Therefore, pathfinding rapidly emerging. However, processing raw can expensive, as these semantically poor unstructured data. In this article we present innovative octree‐based approach for the purpose pathfinding. We...

Abstract. Updated and detailed indoor models are being increasingly demanded for various applications such as emergency management or navigational assistance. The consolidation of new portable mobile acquisition systems has led to a higher availability 3D point cloud data from indoors. In this work, we explore the combined use clouds trajectories SLAM-based laser scanner automate reconstruction building methodology starts by door detection, since doors represent transitions one space other,...

The BIM paradigm, supplied by appropriate standards like IFC, became unavoidable in recent construction projects. Several applications (e.g. indoor navigation, energy analysis ...) find it a source of information on which they can rely. However, practices reveal that models are not always directly reliable for and the latter have to ensure validity data their own. In case calculations will highly rely IfcSpace objects describing rooms, addition spatial relationships with surrounding...

Abstract. We present a comparison of point cloud generation and quality data acquired by Zebedee (Zeb1) Leica C10 devices which are used in the same building interior. Both sensor come with different practical technical advantages. As it could be expected, these advantages some drawbacks. Therefore, depending on requirements project, is important to have vision about what expect from sensors. In this paper, we provide detailed analysis clouds room interior Zeb1 First, visually assessed how...

Abstract. In recent years, the concept of Digital Twin (DT) for cities is increasingly at core most smart city initiatives, as it has been identified a critical tool tackling challenges this century. A robust modelling framework essential if local, state and national governments are to move towards sustainable built environments work together across complex multi-sectoral problems drive impacts that improve urban liveability climate adaptability. Furthermore, level collaboration...

It is widely acknowledged that the integration of BIM and GIS data a crucial step forward for future 3D city modelling, but most research conducted so far has covered only semantic aspects GIS-BIM integration. We present here results GeoBIM project, in which we tackled three problems focussing instead on involving geometry processing: (i) automated processing complex architectural IFC models, (ii) existing subsoil BIM, (iii) georeferencing models their use software. All have been studied...

Over recent decades, more and cities worldwide have created semantic 3D city models of their built environments based on standards across multiple domains. models, which are often employed for a large range tasks, go far beyond pure visualization. Due to different spatial scale requirements planning managing various environments, integration Geographic Information Systems (GIS) Building Modeling (BIM) has emerged in years. Focus is now shifting Precinct (PIM) general sense built-environment...

Abstract. Indoor navigation can be a tedious process in complex and unknown environment. It gets more critical when the first responders try to intervene big building after disaster has occurred. For such cases, an accurate map of is among best supports possible. Unfortunately, not always available, or generally outdated imprecise, leading error prone decisions. Thanks advances laser scanning, 3D maps built relatively small amount time using all sort scanners (stationary, mobile, drone),...

Abstract. For several decades, indoor navigation has been exclusively investigated in a 2D perspective, based on floor plans, projection and other representations of buildings. Nevertheless, 3D are closer to our reality offer more intuitive description the space configuration. Thanks recent advances modelling, is timidly but increasingly gaining interest through applications. But, because structure environment often complex than outdoor, very simplified models used obstacles not considered...

Abstract. This paper presents a system architecture for structuring and manipulation of Building Information Models (BIM), three-dimensional (3D) geospatial information, point clouds time series data obtained from sensors. The consists four layers including pre-processing, storage, interface front-end manipulation. To enable the integration different data, unified UML model is developed. explains all steps 3D reconstruction, BIM geo-referencing, storage spatial visualisation. Special...

Abstract Indoor 3D models are digital representations of building interiors reconstructed from scanned data acquired by laser scanners, depth (RGBD) cameras, and CAD drawings. Consequently, there is noise in the source a notable variety methods used to treat process these into models. Alas, correctness reconstructions thus their suitability for given application uncertain. There lack robust base logic that would allow controlling consistency (automatically) generated Fortunately, criteria...

Abstract With the development of cities, indoor structures contemporary public or commercial buildings are becoming increasingly complex. Accordingly, need for navigation has arisen. Among positioning technologies, quick response (QR) code, a low‐cost, easily deployable, flexible, and efficient approach, been used purposes. A network (model) is precondition pedestrian path planning. However, no thorough research completed to investigate relationship between networks locations QR codes, which...

This paper describes a new method allowing to retrieve the indoor and outdoor topology of detailed 3D building model from its geometry extract different levels detail (LoD) resulting topological description. No prior information about initial model, except geometric is needed as input, using combinatorial maps data structure, recovers identified parts building. The for most applications models after architects design it. While classical available are mainly furnished in Boundary...

Abstract. Automatic generation of indoor navigable models is mostly based on 2D floor plans. However, in many cases the plans are out date. Buildings not always built according to their blue prints, interiors might change after a few years because modified walls and doors, furniture may be repositioned user’s preferences. Therefore, new approaches for quick recording environments should investigated. This paper concentrates laser scanning with Mobile Laser Scanner (MLS) device. The MLS...