The integration of water and soil based on three-in-one 3DD-P algorithm

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Peipei^1 ; Liu, Xianglei^1 ; Fei, Lifan^2

Key Laboratory for Urban Geomatics of National Administration of Surveying, Mapping and Geoinformation, Beijing Key Laboratory for Architectural Heritage Fine Reconstruction and Health Monitoring, Beijing University of Civil Engineering and Architecture, Beijing, China^1

School of Geographic Information and Tourism, Chuzhou University, China^2

关键词: Corresponding weights;    Discrete points;    Douglas-peucker algorithm;    Multi-scale dynamics;    Spatial relationships;    Threshold setting;    Topographic features;    Topological consistency;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/6/062008/pdf
DOI  :  10.1088/1757-899X/490/6/062008

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In view of the fact that geomorphic synthesis using conventional three-dimensional Douglas-Peucker algorithm leads threshold setting randomness, Complicated calculation and spatial relationship conflicts in the integrated geomorphic structure line, this paper proposes an improved 3D D-P algorithm of the indirect generalization of terrain which maintains spatial relationship consistency. Firstly, the discrete points on the water systems and the contour lines are sorted on the basis of the 3D Douglas algorithm. Then each sequence assigns a corresponding weight according to their respective characteristics, re-adjusts the position of the point, and integrates the sequence using the "three in one" idea to obtain a more comprehensive queue. Finally, the data is simplified and reconstructed according to the compression ratio to Multi-scale dynamic synthesis of terrain. The experimental results show that the method has higher accuracy in simplification, which can maintain the main topographic features of the drawing area and ensure the topological consistency between the structural lines.