In the past 15 years, mapping technology has become increasingly vital for the development of smart cities, with 3D maps gradually supplementing traditional 2D maps. These 3D maps are now widely utilized in cartography to provide a detailed, three-dimensional perspective of landscapes and buildings. This paper examines the concept of 3D maps and compares two prominent methods for their creation. In this study, one 3D map was generated using photogrammetric 3D stereo-restitution, while the other was created by automatically extruding a LiDAR point cloud with 2D vector polygons. Upon comparing the two methods, we found that their accuracy is comparable, with performance largely determined by the quality of the input data. We also observed that constructing a 3D map using photogrammetry requires significantly more time than the LiDAR-based approach. As 3D maps play an increasingly important role in mapping, the demand for more precise and comprehensive field data is growing. With the availability of better field data, a clearer determination of which method yields the most accurate 3D map could be made. The rapid evolution of 3D mapping technology, along with its growing applications in fields like surveying and material monitoring, is essential to the development of smart cities. Ultimately, the advancement of infrastructure design and city planning will rely heavily on 3D mapping technology as a fundamental tool.
Maps, Third-dimension Photo, grammerty Smart
Soni, (2025-01-07 11:05:58.774). The Future of 3D Mapping: Analyzing Two Popular Methods in Photogrammetry. Abhi International Journal of Applied Engineering, Volume pIxiKMSyqcR7LuqFkcaI, Issue 1.