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In order to pose the problem in a structured way, this book is divided into eight chapters:

Chapter 1 presents an overview of the basic concepts of BIM technology. It provides fundamental notions related to the concept of BIM with regard to conceptual and technical dimensions.

Chapter 2 presents the different methods for collecting and acquiring 3D data for producing a digital model. This chapter provides an overview of the most common 3D acquisition techniques and tools, with an extended reflection on 3D surveys of urban environments in general, prior to the production of urban models. This chapter also proposes a discussion around the choice of techniques and methods and the integration of multiple and heterogeneous data sources for the 3D reality capture of urban space.

Chapter 3 addresses the modeling methods for the development of a multi-scale BIM. This chapter presents the basis for the production of a digital 3D mock-up and the main approaches developed for 3D reconstruction of its objects, in particular buildings.

Chapter 4 deals with the interoperability of models and gives a global overview on Open BIM standards offering the possibility for professionals to work in an exchange environment that guarantees the interoperability of software within the framework of the “open” and standardized digital mock-up.

Chapter 5 explains the principle of combining BIM and GIS technologies under the concept of GeoBIM. It highlights the benefits of GeoBIM with respect to several topics and discusses the latest research findings in this area.

This theoretical and technical analysis is supported by three chapters presenting three case studies:

 – BIM and 3D GIS integration for real estate valuation (Chapter 6);

 – semantic segmentation of airborne LiDAR data for urban model development (Chapter 7);

 – use of BIM models for the renovation of urban spaces (Chapter 8).

Finally, the book ends with a general conclusion that summarizes the highlights of the concept of “multi-scale BIM” by posing some perspectives on the subject.