Abstract
The current computer technology facilitates the processing of large volumes of information in architectural design teams, in parallel with recent advances in-flight automation in unmanned aerial vehicles (UAVs) along with lower costs, facilitates their use to capture aerial photographs and obtain orthophotographs and 3D models of relief and terrain textures. With these technologies, 3D models can be produced that allow different geometric configurations of the distribution of construction elements on the ground to be analyzed. This article presents the process of implementation in a terrain integrated into the early stages of architectural design. A methodology is proposed that covers the detailed capture of terrain, the relationship with the architectural design environment, and its implementation on the plot. As a novelty, an inverse perspective to the remaining disciplines is presented, from the inside of the object to the outside. The proposed methodology for the use of UAVs integrates terrain capture, generation of the 3D mesh, superimposition of environmental realities and architectural design using building information modeling (BIM) technologies. In addition, it represents the beginning of a line of research on the implementation of the plot and the layout of foundations using UAVs. The results obtained in the study carried out in three different projects comparing traditional technologies with the integration of UAVs + BIM show a clear improvement in the second option. The use of new technologies applied to the execution and control of work not only improves accuracy but also reduces errors and saves time, which undoubtedly indicates significant savings in costs and deviations in the project.
Highlights
The use of unmanned aerial vehicles (UAVs) for photogrammetry has been driven by three aspects: the improvement of their performance both in-flight stability and in increasing the quality of photographic capture, and the developments in the field of graphic computing with structure from motion algorithms (SfM) Eisenbeiss and Sauerbier [1], García-Pulido et al
The current status of UAVs and their photogrammetry allows 2D and 3D models to be obtained from photographs taken with certain restrictions Everaerts [9] and are based on classic stereo viewing techniques Hiep et al [10]
The practical case we present of this work system, adapted to the region studied by the UAV, allows us to analyze from outside-to-inside the different options of volumetry and fit in the studied plot and the relation from the inside with the environment
Summary
The use of unmanned aerial vehicles (UAVs) for photogrammetry has been driven by three aspects: the improvement of their performance both in-flight stability and in increasing the quality of photographic capture, and the developments in the field of graphic computing with structure from motion algorithms (SfM) Eisenbeiss and Sauerbier [1], García-Pulido et al [2] Irschara et al [3]. This article presents a design methodology based on two starting points: obtaining 2D and 3D terrain models with acceptable quality and precision in construction and the availability of integrated systems in the design and execution phases of buildings to be integrated into BIM (building information modeling) tools. There are three different situations: the possibility of using it as an instrument of measurement and representation (data collection), a tool for the architectural design phase (decision making) and as a tool for reconsideration (implementation)
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