Scan to BIM using Smartphone 3D Scanning
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New tools for digital recreation of existing buildings as building information models,based on 3D scanning, are gradually being adopted by the construction industry. Thesetechnologies are emerging as the concept Scan to BIM. The use of scanning to gain accurate digital models of reality could revolutionize the way some construction projects are conducted. Today, the scanning is primarily done by using ground fixed laser scanners. The aim of this study was to test the possibility of using a smartphone for Scan to BIM projects. To achieve this, research of current state of the art technologies and testing various procedures of scanning, post processing and BIM creation were conducted. Then, a full-scale smartphone Scan to BIM experiment was carried out on a suitable building. The experiment included various aspects of the technology such as procedure, precision and efficiency. This thesis provides a detailed description of the tests leading to the experiment and the established Scan to BIM procedure. The experiment proves that it is possible to create a BIM from smartphone scanning. As there is no straightforward method of creating a BIM from this kind of scanning, the process proved to be challenging and several software packages were needed. The smartphone scanning was surprisingly accurate. On the contrary, the final BIM was prone to error as the process of creating the BIM was mainly manual and based on the best fit by visual estimates. Overall, using a smartphone for scanning proved to be an efficient tool, as it is a convenient way of scanning and accessing all parts of a building. The experiment also provided some evidence that this is a faster way of scanning and establishing a BIM than methods currently in use and that smartphone scanning could easily be combined with other scanning techniques.