Algorithm for automatically extracting vertical plane on basis of vehicle-mounted laser scanning data

A vehicle-mounted laser scanning and automatic extraction technology, applied in the field of surveying and mapping, can solve problems such as low efficiency and large errors in surveying and mapping methods, and achieve the effect of improving low efficiency

Active Publication Date: 2015-01-28
浙江四维远见信息技术有限公司
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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

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  • Algorithm for automatically extracting vertical plane on basis of vehicle-mounted laser scanning data

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0018] Such as figure 1 As shown, the present embodiment provides an algorithm for automatically extracting a vertical plane based on vehicle-mounted laser scanning data, and the algorithm includes the following steps:

[0019] Obtain the scanning data of the measured object through the vehicle-mounted laser scanning device;

[0020] Calculate the acquired scan data of the measured object to the point cloud data of the set coordinate system;

[0021] Explore the algorithm of finding the plu...

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Abstract

The invention provides an algorithm for automatically extracting a vertical plane on basis of vehicle-mounted laser scanning data. The algorithm for automatically extracting the vertical plane on basis of the vehicle-mounted laser scanning data includes the following steps that scanning data of a measured object are obtained through a vehicle-mounted laser scanning device; the obtained scanning data of the measured object are calculated to point cloud data of a set coordinate system; an algorithm of the vertical plane is found out; a vertical plane where the measured object is located is calculated according to the found algorithm of the vertical plane, a strip area where a horizontal projection of the measured object is located is obtained according to residual errors during fitting of a straight line while the calculation is performed, the strip area is fit to the straight line according to a least square method, and a horizontal projection of the vertical plane is designed according to width of the strip area and length of the cut-out strip area. The algorithm for automatically extracting the vertical plane on basis of the vehicle-mounted laser scanning data has the advantages that automatic finishing can be achieved, the algorithm is suitable for a surveying and mapping error basic theory, and defects that manual extracting is low in efficiency and inaccurate, and model rotating is required to check whether capturing is accurate or not can be overcome.

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 ...

Claims

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Application Information

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IPC IPC(8): G06T7/60G01C15/10
Inventor 杨铁利左建章关艳玲马浩王留召魏占营
Owner 浙江四维远见信息技术有限公司
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