Masterarbeiten (abgeschlossen)
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Visual route communication via geometric deformationThis thesis proposes visual route communication via geometric deformation while providing map readers with different route options and helping them by visual means distinguish the most efficient route according to their personal preferences. The proposed communication is directed to create individual routing solutions, motivate travelers to avoid paths traversing the territories, which should be circumvented for different reasons. For route communication via geometric deformation, human psychological aspects were examined. For representation, existing visual variables were investigated and taken as a basis. The deformation method for the thesis found inspiration in perspective drawing art techniques, previously introduced multiple scales designs for maps, geometric projections, and distortions. Finally, the idea to visualize roads in the shape of a hollow or a pit was created. For the deformation implementation, two approaches were proposed in the thesis. The first method is based on the variable scales design. The foundation of the second method is lens distortion. As part of the thesis, an automated system for deformation was realized.Leitung: Fuest, SesterTeam:Jahr: 2021
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Offene Masterarbeiten
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Occupancy-free Space Modeling and Navigation Path Planning in a 3D Voxel Grid Environment for Urban Digital Twin ApplicationsThe urban digital twin is an innovative concept within smart city technology, aiming to develop integrated and intelligent systems by harnessing diverse data from a multitude of sensors. Three-dimensional (3D) geodata plays a pivotal role in the representation and operation of urban digital twins. Tasks such as smart space management and navigation have become increasingly essential in urban digital twin applications, and they can be effectively facilitated using a foundation of 3D geospatial data. Therefore, this master thesis focuses on the modeling of unoccupied space and navigation path planning, employing a 3D voxel grid environment representation. The objective of the thesis is to develop a suitable approach for defining vacant space within urban area, which is utilized to enable collision-free 3D navigation. To achieve this, it is proposed to integrate the point cloud data of the Hannover urban area into a 3D voxel grid structure. In this context, grid cells containing point cloud data are treated as obstacles, while unoccupied cells are collectively constitute the occupancy-free space. The identified vacant space serve as a graph for implementing the shortest path algorithm. Ultimately, both the occupancy-free space and an illustrative route through it are visualized to demonstrate the approach viability.Leitung: Shkedova, FeuerhakeTeam:Jahr: 2023
