研究目的
Investigating the application of three-dimensional laser scanning technology in hydraulic engineering topographic mapping and modeling to improve data acquisition efficiency and accuracy.
研究成果
The research demonstrates that three-dimensional laser scanning technology, combined with the proposed data management and processing methods, can efficiently and accurately generate topographic contours and 3D models for hydraulic engineering. The method reduces workload and provides high precision, offering significant support for construction management.
研究不足
The study acknowledges potential data loss during the scanning, pre-process, and post-process stages, which may result in differences between the topographic model and actual data. Areas with data missing or scarcity may exhibit higher errors.
1：Experimental Design and Method Selection:
The study employs three-dimensional laser scanning technology for data measurement, pre-process, and post-process in hydraulic engineering topographic mapping. It uses B-tree and its expansion structure for point cloud management and a self-adaptive mesh Delaunay algorithm for generating triangular irregular network digital elevation models.
2：Sample Selection and Data Sources:
The data is collected from a hydraulic engineering site using a Leica HDS8800 scanner, covering an area of over 30 square kilometers.
3：List of Experimental Equipment and Materials:
Leica HDS8800 large-scale spatial three-dimensional laser scanner.
4：Experimental Procedures and Operational Workflow:
The process includes scanning plan design, site scanning, data registration, de-noising, compression, contour generation, and 3D entity modeling.
5：Data Analysis Methods:
The study analyzes the variance between models generated from laser scan data and traditional methods to verify accuracy.
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