When geospatial big data meets high performance computing in 3D GIS

Authors: Tianyang Chen*, University of North Carolina - Charlotte, Wenwu Tang, Advisor
Topics: Geographic Information Science and Systems, Spatial Analysis & Modeling
Keywords: 3D GIS, structure from motion, high performance computing
Session Type: Paper
Day: 4/5/2019
Start / End Time: 8:00 AM / 9:40 AM
Room: Roosevelt 3, Marriott, Exhibition Level
Presentation File: No File Uploaded

3D GIS is one of the cutting-edge topics in geography, flooding many subjects, such as urban planning, environmental assessment, and disaster management. Structure from motion (SfM), a state-of-art technique for 3D reconstruction based on photogrammetry, has warmed up in geospatial data acquisition and analytics of 3D GIS. However, SfM faces a geospatial big data challenge that dramatically slows down the associated processing and analytics. Most of the existing solutions are to make a compromise to the computing speed by sacrificing the accuracy of the modeling. High-performance computing driven by cyberinfrastructure could be a potential solution in facing such massive computing. Coupling with high-performance computing, SfM would release more ability in 3D modeling without making the compromise between computing and accuracy. Therefore, we developed an approach that integrates structure from motion and high-performance computing to bridge the gaps between the demand for highly accurate modeling in 3D GIS and the low efficiency of SfM. A case study of 3D geospatial data modeling related to hydraulic structures such as bridges is conducted to evaluate the performance of this approach.

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