In this master's thesis we explore the 3D modeling of point clouds that were obtained through terrestrial laser scanning, methods of obtaining 3D models and their usability in virtual reality and video games. The thesis consists of a theoretical part and a practical part. The theoretical part describes types of 3D models and 3D data, ways to obtain them and forms of their usage. It also deals with the history of video gaming and virtual reality as a constituent of the video game industry, types of video games with a focus on “First person” video games that take place in constructed virtual 3D spaces and consist of moving through the virtual space along with solving various tasks. Elements of video games that are connected to multi-medial cartography and geodesy and geoinformatics in general are also addressed. The practical part of the thesis consists of three parts: acquiring of the data (scanning of the object), data processing (registration of point clouds, model-building) and the use of the model (making an application through a game engine that enables a virtual walk). For the acquiring of the data (scanning), a historically important object was chosen. Several programs that enable point cloud processing and model-making were used during the data processing. Finally, the simplest way of using a game engine for building a level of a virtual walk around a model object is described. The particular game engine was used to make various video games, many of them quite well known.
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