Method and device for managing point clouds on basis of tracks and navigation equipment

Abstract

The invention discloses a method and device for managing point clouds on basis of tracks and navigation equipment. The method comprises the following steps of: obtaining a track file and point cloud file, wherein the track file comprises time stamp information of track points, and the point cloud file comprises time stamp information of point clouds; establishing a corresponding relationship between the cloud points and the track points according to the time stamp information of the track points and the time stamp information of the point clouds; carrying out reduplication removal and segmentation on point clouds corresponding to every two adjacent track points, and carrying out associated storage and management on the point cloud file according to the track points. According to the methodand device, the relationship between the point clouds and the tracks can be calculated, point cloud positions can be rapidly positioned according to the tracks, coordinate positions can be seen in real time through the point clouds, and rapid positioning and real-time pulling of the point clouds can be realized through carrying out framing management on the point clouds according to GPS tracks, so that the information integrity of point clouds and tracks in a same tile can be ensured at the same time, the management cost is decreased and the production efficiency is improved.

Description

technical field [0001] The present invention relates to point clouds, in particular to a method and device for managing point clouds based on trajectories, and a navigation device. Background technique [0002] Point cloud is a kind of data collection, which is a collection of massive points expressing the spatial distribution of objects and surface characteristics of objects under the same spatial reference system. It was first applied in the mechanical field. With the decrease of equipment cost and the improvement of accuracy, it is also more and more used in other fields, for example, it can be used to make street views in the field of electronic maps. [0003] Point clouds contain different attribute information according to different acquisition methods. For example, the point cloud obtained by the principle of laser measurement includes three-dimensional coordinates (XYZ) and laser reflection intensity (Itensity); the point cloud obtained by the principle of photogram...

AI Technical Summary

Problems solved by technology

Therefore, the real geographical coordinates cannot be seen according to the point cloud, and the coordinate position cannot be quickly located due to the massive data of the point cloud

[0006] As mentioned above, trajectory data and point cloud are managed separately, so high-precision point cloud files cannot be viewed in real time through trajectory

The inventor of this application found that there is a connection between the point cloud and the trajectory data itself, but currently it is not possible to query the trajectory based on the point cloud, which brings difficulties to the production and management of the data

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