Method, apparatus, device and storage medium for extracting feature lines of a geographical area
By acquiring the location information of detection points in a geographical area using LiDAR, and combining triangulation and stacked storage technologies, feature lines of the geographical area are automatically extracted. This solves the problems of low automation and insufficient accuracy in existing technologies, and achieves efficient and high-precision feature line extraction.
CN116594760BActive Publication Date: 2026-07-07CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD
- Filing Date
- 2023-01-06
- Publication Date
- 2026-07-07
Smart Images
Figure CN116594760B_ABST
Abstract
The application provides a method and device for extracting feature lines of a geographic area, equipment and a storage medium, and the method comprises the following steps: obtaining position information of a plurality of detection points of the geographic area by emitting and receiving laser pulses through a laser radar; performing triangulation on a surface formed by the plurality of detection points to obtain a triangulation triangle; wherein, when performing the triangulation, a stack is used to store edges of the triangulation triangle to be constructed; determining feature points of the geographic area according to height values between vertices of the obtained triangulation triangle; obtaining a top feature line of the geographic area according to the top feature points; and obtaining a bottom feature line of the geographic area according to the bottom feature points. The method of the embodiment of the application improves the extraction accuracy of the feature line and reduces the memory consumption.
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