Implementation Case Studies and Challenges of Urban-Scale 3DGS

3D Gaussian Splatting (3DGS), a technique capable of generating highly photorealistic 3D representations, is beginning to influence the fields of surveying and civil engineering. However, most prior studies and practical applications have been limited to small-scale structures, and examples of urban-scale implementation remain scarce. Moreover, applying 3DGS to large-scale scenes presents several technical challenges that must be addressed. This paper presents a rare case of urban-scale 3DGS implementation using aerial imagery and examines the primary challenges encountered, along with proposed solutions.