The concepts of “digital twins”, “3D real scene”, “metacosm” and others were the technical paths for building digital cities with the development of emerging surveying and mapping science and technology, which was to build a digital and virtualized city that matched the real physical world, to achieve a one-to-one correspondence between all elements of the physical world and the digital virtual world. And one of its basic geographic information data was a highly similar, virtual simulation of the 3D real scene. After exploring the traditional manual 3DsMax modeling, UAV low-altitude digital oblique photogrammetry modeling, airborne laser scanning modeling and other single modeling technologies, this paper discussed the 3D digital modeling technology used by the UAV airborne laser scanning point cloud and low-altitude digital oblique photogrammetry for complementary integration, constructing the 3D scene of the digital city. This paper expounded the technical route and production process of 3D digital modeling, in order to provide technical references for related projects.
References
[1]
Xu, H. (2020) Ideas for the Development and Construction of Smart Cities Based on “Digital Twins”. Peoples Forum and Academic Frontiers, No. 8, 94-99. (In Chinese)
[2]
He, D. (2019) Accelerating the Construction of Smart Cities. Smart Cities, 20, 26-27. (In Chinese)
[3]
Deng, L., Ji, C.D., Bhang, X.Z., et al. (2019) Application of Oblique Photography Based on Airborne Laser in 3D Modeling. Surveying and Mapping and Spatial Geographic Information, 42, 219-221. (In Chinese)
[4]
Zhong, Y., Wang, F., Liu, F., et al. (2017) Research and Application of Three Dimensional True Modeling Based on Oblique Aerial Photogrammetry. Beijing Surveying and Mapping, No. 6, 28-32. (In Chinese)
[5]
Mei. (2011) Discussion on 3D Modeling Method Based on Laser and Aerial Imagery. Bulletin of Surveying and Mapping, 12, 12-14. (In Chinese)
[6]
Li, Y.Q., Han, W.Q. and Huang, Z.H. (2010) Comparative Analysis of 3D Modeling Methods for Digital Cities. Modern Surveying and Mapping, 33, 33-35. (In Chinese)
[7]
Hao, W.W, Deng, Q., et al. (2020) Quality Evaluation of 3D Model of Oblique Photography Reality. Beijing Surveying and Mapping, 34, 56-60. (In Chinese)
[8]
Bi, Y. (2016) 3D Modeling of Urban Reality Based on Airborne Laser and Oblique Photogrammetry. Surveying and Mapping, 39, 138-141. (In Chinese)
[9]
Ciao, K. and Ding, F. (2015). Application of Laser in Three-Dimensional Modeling of Digital City. Urban Survey, 6, 86-88. (In Chinese)
[10]
Chen, J.H. (2019) Research on Screening Method of 3D Urban Modeling Image Based on Oblique Image. Beijing Surveying and Mapping, 2, 153-156. (In Chinese)
[11]
Xi, M.Z. (2020) Construction of Refined 3D Model Based on Oblique Image of UAV and Application of Smart Park. Xi’an University of Science and Technology, Xi’an. (In Chinese)
[12]
Huang, Q., Shi, H.F. and Yu, H.B. (2019) Collaborative Platform for Intelligent Planning of Beautiful Countryside Based on Real Scene 3D. Highway, 64, 233-238. (In Chinese)
[13]
Qiao, E.M. and Shang, D.W. (2018) Surveying and Mapping of Ancient Architecture Based on 3D Scene Modeling Technology. Special Edition of the 21st Annual Conference of the Chinese Society for the Study of Ethnic Architecture Research Association, National Architecture Institute of China, Beijing, 74-82. (In Chinese)
[14]
Li, T. (2019) Fine 3D Modeling of Tower Building Based on Surround Tilt Photography. Bulletin of Surveying and Mapping, No. S1, 318-321. (In Chinese)
[15]
State Administration of Surveying, Mapping and Geo Information (2015) 3D Geographic Information Model Data Product Quality Inspection and Acceptance: CH/T 9024-2014. Surveying and Mapping Press, Beijing. (In Chinese)
[16]
Bo, Z.Q. and Zhang, Y. (2016) Application of Oblique Photogrammetry in Urban Modeling in Changchun. Urban Geotechnical Investigation & Surveying, No. 3, 93-96. (In Chinese)
[17]
Zhang, H., Wang, W., Deng, Q. and Huang, Y.Q. (2020) The Quality Evaluation of 3D Model of Tilt Photography Reality. Beijing Surveying and Mapping, 34, 56-60. (In Chinese)
