Research on optimizing algorithms for massive model of network three-dimensional digital city

doi:10.13474/j.cnki.11-2246.2019.0229

测绘通报 ›› 2019, Vol. 0 ›› Issue (7): 104-108.doi: 10.13474/j.cnki.11-2246.2019.0229

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Research on optimizing algorithms for massive model of network three-dimensional digital city

CHENG Liangyong^1,2, LI Nanjiang²

1. Tianjin Institute of Geotechnical Investigation and Surveying, Tianjin 300191, China;
2. Tianjin StarGIS Information Engineering Co., Ltd., Tianjin 300384, China

Received:2019-04-08 Revised:2019-05-20 Online:2019-07-25 Published:2019-07-31

Abstract

Abstract: Large-scale massive 3D model data network transmission and terminal visualization are the key technologies of web-oriented 3D GIS application. This paper proposes a combination of 3D model adaptive surface deletion simplification algorithm and terrain model one-sided automatic generation algorithm to realize large-scale simplified LOD (level of detail model) model library automatic building, effectively solving massive high-precision, large-scale 3D model library. The application of the model to web-oriented 3D GIS has been successfully experimented in Tianjin network 3D digital urban planning management system project, and the results are remarkable.

Key words: face deletion, single piece, automatic model of simplification, LOD, 3D network

CLC Number:

P208

CHENG Liangyong, LI Nanjiang. Research on optimizing algorithms for massive model of network three-dimensional digital city[J]. 测绘通报, 2019, 0(7): 104-108.

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