Vulnerability restoration method for laser radar point cloud data
A technology of lidar and vulnerability repair, applied in image data processing, 3D modeling, instruments, etc., can solve data loopholes, reduce data accuracy, lack of laser point cloud data and other problems
Pending Publication Date: 2022-03-22
JIANGSU FRONTIER ELECTRIC TECH
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[0002] Lidar point cloud data is often used to construct three-dimensional surface data, but in the process of obtaining laser point cloud data, due to the influence of factors such as building and vegetation occlusion and water body absorption, the acquired laser point cloud data will be partially missing, and The formation of data loopholes greatly reduces the accuracy of the data
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[0057] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be further described in detail below in conjunction with the accompanying drawings.
[0058] It should be clear that the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the embodiments of the present application.
[0059] When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not nece...
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The invention provides a vulnerability restoration method for laser radar point cloud data. The method comprises the following steps: acquiring laser radar point cloud data and historical digital elevation model data of a to-be-detected area; performing filtering processing, gridding processing and vulnerability detection on the laser radar point cloud data to obtain a target vulnerability area; performing discrete point sampling on the historical digital elevation model data according to the target vulnerability area to obtain a plurality of vulnerability repair discrete points; in the laser radar point cloud data, obtaining position coordinates of a plurality of target repair points corresponding to the plurality of vulnerability repair discrete points; acquiring laser radar points in a preset range by taking the position coordinates of the target repair points as centers; calculating an elevation modification value according to the distance and the elevation difference between the laser radar point and the position of the corresponding target repair point; correcting the vulnerability repair discrete points according to the elevation modification value; and repairing the target vulnerability area according to the corrected vulnerability repairing discrete points to obtain repaired laser radar point cloud data.
Description
technical field [0001] The present invention relates to the technical field of vulnerability repairing of point cloud data, in particular to a method for repairing vulnerabilities of lidar point cloud data. Background technique [0002] Lidar point cloud data is often used to construct three-dimensional surface data, but in the process of obtaining laser point cloud data, due to the influence of factors such as building and vegetation occlusion and water body absorption, the acquired laser point cloud data will be partially missing, and The formation of data loopholes greatly reduces the accuracy of the data. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide a loophole repair method for lidar point cloud data, which can repair the data loopholes in the lidar point cloud data and improve the accuracy of the lidar point cloud data. [0004] An embodiment of the present inven...
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IPC IPC(8): G06T17/20G06T19/20G06T5/00
CPCG06T17/205G06T19/20G06T2207/10028G06T5/77G06T5/90Y02A90/10
Inventor 黄郑王红星张欣陈玉权王海楠
Owner JIANGSU FRONTIER ELECTRIC TECH