Acta Geodaetica et Cartographica Sinica ›› 2023, Vol. 52 ›› Issue (11): 1953-1961.doi: 10.11947/j.AGCS.2023.20220275

• Photogrammetry and Remote Sensing • Previous Articles     Next Articles

The method of variable scale mesh primitive extraction for monomeric and structural reconstruction of buildings

LIU Haibing, QU Yingjie, YAN Qingsong, DENG Fei   

  1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • Received:2022-04-06 Revised:2022-10-01 Published:2023-12-15
  • Supported by:
    Quick Support Program (No. 80911010202)

Abstract: The existing region-growing algorithm extracts planar primitives inaccurately and irregularly, ignoring the geometric structures with smaller scales. The method of variable scale mesh primitive extraction for monomeric and structural reconstruction of buildings is proposed in this paper, which uses a multi-scale region-growing algorithm to extract the corresponding planar primitives from the geometric structures of different scale sizes of the mesh, improving the accuracy and completeness of planar primitive extraction. The topological quality of planar primitives is further improved by topology optimization of planar primitives, and the reconstruction accuracy of polygonal surface model is enhanced. And the area-priority strategy is used to improve the merging efficiency of co-planar primitives. The experimental results show that this method can extract the planar primitives more accurately, preserve the small-scale geometry of the buildings, and generate a more compact and structural polygonal surface model of the buildings.

Key words: monomeric and structural reconstruction, multi-scale region-growing, topology optimization, polygonal surface model

CLC Number: