An Algorithm for Automatically Extracting Plumb Plane Based on Vehicle Laser Scanning Data

Abstract

The invention provides an algorithm for automatically extracting the plumb plane based on vehicle-mounted laser scanning data. The algorithm for automatically extracting the plumb plane based on vehicle-mounted laser scanning data includes the following steps: obtaining the scanning data of the measured object through the vehicle-mounted laser scanning device; The acquired scanning data of the measured object is resolved to the point cloud data of the set coordinate system; the algorithm for finding the plumb plane is calculated; the vertical plane where the measured object is located is calculated based on the algorithm for finding the plumb surface. , during calculation, the band-shaped area where the horizontal projection of the measured object is located is obtained based on the residual size of the straight line fitting, and then the band-shaped area is fitted into a straight line according to the least squares method, and according to the width and interception of the band-shaped area The length of the strip area is used to make a horizontal projection of the vertical plane. The invention has the following beneficial effects: automatic completion, the algorithm conforms to the basic theory of surveying and mapping errors, and improves the disadvantages of manual extraction such as low efficiency, inaccuracy, and the need to rotate the model to check whether the capture is accurate.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping, in particular to an algorithm for automatically extracting a vertical plane based on vehicle-mounted laser scanning data. Background technique [0002] The representation on the map of each facade of the building in the map element is mainly the outline of the wall, the outline of the mailbox / newsstand / board newspaper window / bus station notice board, and the vertical plane where the measured object is located in the prior art The data is collected manually, and then the vertical plane where the measured object is located is calculated according to the collected data, but the above-mentioned surveying and mapping methods have large errors and relatively low efficiency. [0003] Aiming at the problems in the related technologies, no effective solution has been proposed yet. Contents of the invention [0004] Aiming at the problems in the related technologies, the present invention ...

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Problems solved by technology

[0002] The representation on the map of each facade of the building in the map element is mainly the outline of the wall, the outline of the mailbox / newsstand / board newspaper window / bus station notice board, and the vertical plane where the measured object is located in the prior art All data are collected manually, and then the vertical plane where the measured object is located is calculated according to the collected data, but the above-mentioned surveying and mapping methods have large errors and low efficiency

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