Construction of nested pyramid model based on linear reference

doi:10.13474/j.cnki.11-2246.2021.0022

Bulletin of Surveying and Mapping ›› 2021, Vol. 0 ›› Issue (1): 116-120.doi: 10.13474/j.cnki.11-2246.2021.0022

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Construction of nested pyramid model based on linear reference

ZHAI Jialei¹, HUO Liang^1,2, SHEN Tao¹, DUAN Yuanjing¹, ZHANG Xiaoyong¹, FU Jiying¹

1. School of Geomatics and Urban Spatial Information, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 102616, China

Received:2020-02-20 Revised:2020-09-16 Published:2021-02-08

Abstract

Abstract: In view of the lack of effective spatial data model in the construction of linear reference virtual scene, this paper proposes a nested pyramid model construction method based on linear reference based on the current mainstream pyramid model, spatial index structure and dynamic segmentation.Firstly, the dynamic segmentation technology is expanded by combining with the data characteristics of linear scenes, and the vertical structured pyramid model is added.Secondly, the linear reference is statically segmented in multi-scale, the independent arcs are stored separately, and the static segmented pyramid model is constructed.Finally, a unified mapping relationship is established, and a nested pyramid model is constructed, so as to improve the continuity of the model when switching between scales and complete the unified organization and integrated management of multi-source data of linear scenes.

Key words: linear reference, nested pyramid, spatial index, dynamic segmentation, static segmentation

CLC Number:

P208

ZHAI Jialei, HUO Liang, SHEN Tao, DUAN Yuanjing, ZHANG Xiaoyong, FU Jiying. Construction of nested pyramid model based on linear reference[J]. Bulletin of Surveying and Mapping, 2021, 0(1): 116-120.

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Construction of nested pyramid model based on linear reference

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