Vehicle-mounted lidar three-dimensional scanning method, ground object classification method and system

Abstract

The invention provides a vehicle laser radar three-dimensional scanning method, and a terrain classification method and system. A laser emission unit, a signal detection unit, a POS unit and a core processing unit are arranged on a vehicle, wherein the laser emission unit comprises a colorful laser source, an acquisition result of the signal detection unit is inputted to the core processing unit, point cloud acquired through scanning is acquired, the colorful spectrum information of the point cloud is acquired, and the relative geometric position of the point cloud is determined; the attitude position information is further recorded by the POS unit and is inputted to the core processing unit, according to the relative attitude of the laser emission unit and the POS unit, the absolute geometric position of the point cloud is acquired based on the relative geometric position of the point cloud, and the space position information of the point cloud is acquired. The vehicle laser radar three dimensional scanning method is advantaged in that the colorful laser spectrum information of a target terrain and the laser point cloud space information are directly and simultaneously acquired, so colorful laser imaging of the target terrain is acquired through three-dimensional reconstruction, and the method can be widely applied to the digital city and smart city fields.

Description

Technical field [0001] The invention relates to the technical field of integrated application of mobile measurement and surveying, mapping and remote sensing, in particular to a vehicle-mounted color three-dimensional scanning laser radar scheme, which can simultaneously obtain color spectrum information and three-dimensional space information of target features on a mobile vehicle platform. Background technique [0002] Vehicle-mounted Earth Observation Lidar technology is an important remote sensing method to achieve high-resolution three-dimensional space description of ground objects in a road environment, especially in urban environments, which has outstanding advantages in quickly acquiring three-dimensional spatial information. However, due to the single wavelength limitation of traditional lidar, it is difficult to obtain effective spectral features of ground features, and spectral information can effectively express the attributes of ground features. It is usually necess...

AI Technical Summary

Problems solved by technology

However, due to the limitation of a single wavelength of traditional lidar, it is difficult to obtain effective spectral features of ground objects, and spectral information can effectively express the attributes of ground objects

Usually it is necessary to match a panoramic camera to detect at the same time to obtain the corresponding texture and color spectrum information, but the cost is too high, the subsequent data processing is complicated, and the accuracy effect is no longer suitable for market development needs

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