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Laser point cloud intensity calibration method, device, equipment and storage medium

A technology of laser point cloud and calibration method, which is applied in the direction of radio wave measurement systems and instruments, can solve the problems of poor display effect of laser point cloud, unnatural intensity distribution of laser point cloud, poor correction effect, etc., and improve the display effect , the overall intensity distribution is improved, and the effect of point cloud intensity weakening

Active Publication Date: 2020-09-18
WUHAN HI TARGET DIGITAL CLOUD TECH CO LTD
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Problems solved by technology

[0004] However, using the existing theoretical model, in actual operation, the collected data does not necessarily fully meet the preset conditions, and is easily affected by a variety of factors, resulting in poor correction results and unnatural intensity distribution of the laser point cloud. The problem that caused the poor display effect of laser point cloud

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  • Laser point cloud intensity calibration method, device, equipment and storage medium
  • Laser point cloud intensity calibration method, device, equipment and storage medium
  • Laser point cloud intensity calibration method, device, equipment and storage medium

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Embodiment Construction

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0058] figure 1 A schematic structural diagram of a laser point cloud intensity calibration provided in the embodiment of the present application; figure 1 As shown, the laser point cloud intensity calibration device 100 includes: a laser scanner 101 , a target 102 and an installation platform 103 .

[0059] It should be noted that when using the laser scanner 101 to collect data, it should be avoided that the ground may not be horizontal in the radar coordinate system due to bumps or the installation tilt of the laser scanner 101 or the slope of t...

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Abstract

The invention provides a laser point cloud intensity calibration method, a device, equipment and a storage medium, and relates to the technical field of laser point cloud reconstruction. The laser point cloud intensity calibration method comprises the following steps of: acquiring intensity calibration data of a laser point, aligned with a target, of a laser scanner when the target moves in a laser emergent ray direction; determining a relation curve of the distance and the intensity according to the strength calibration data; determining a reference distance according to the relation curve; and determining an intensity data correction function of the laser scanner according to the reference distance and the intensity data of each detection distance in the intensity calibration data. In the laser point cloud intensity calibration method of the invention, the relation curve of the distance and the strength is determined according to the strength calibration data, therefore, the intensity correction function can be determined according to the reference distance and the intensity data of each detection distance in the intensity calibration data, the influence of other factors on the intensity can be effectively removed, the corrected intensity reflects the characteristics of the target as much as possible, and the display effect of the laser point cloud is improved.

Description

technical field [0001] The present invention relates to the technical field of laser point cloud reconstruction, in particular to a laser point cloud intensity calibration method, device, equipment and storage medium. Background technique [0002] In recent years, lidar has been widely used in terrain surveying and mapping, smart cities and other fields due to its advantages in obtaining geographic information data with high efficiency and high precision. The lidar data is presented in the form of a point cloud, and the information of each point mainly includes the three-dimensional coordinates and intensity information of the point. Among them, the intensity information reflects the reflection characteristics of the ground object, which is of great significance in point cloud data processing and information extraction. The laser point intensity is related to the reflection characteristics of the ground object, laser emission power, incident angle and the distance between th...

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Application Information

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IPC IPC(8): G01S7/497
CPCG01S7/497Y02A90/10
Inventor 颜源杨晶汪开理陈海佳罗胜何平
Owner WUHAN HI TARGET DIGITAL CLOUD TECH CO LTD
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