Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Point cloud correction method and device of laser scanner and storage medium

A laser scanner and laser scanning technology, applied in the field of laser scanners, can solve the problems of high time and space complexity, high time and space complexity, and difficulty in filtering processing, so as to reduce the time and space complexity. , Improve the quality of point cloud, eliminate the effect of fluctuation

Pending Publication Date: 2021-10-08
GUANGZHOU SOUTH SATELLITE NAVIGATION INSTR
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a point cloud correction method for laser scanners, which can solve the high time and space complexity or difficulty in the filter processing of point cloud data in the prior art Large, time-consuming and other issues
[0007] The second object of the present invention is to provide a point cloud correction device for laser scanners, which can solve the problems of high time and space complexity, difficulty, and time-consuming filter processing of point cloud data in the prior art.
[0008] The third object of the present invention is to provide a storage medium, which can solve the problems of high time and space complexity, difficulty, and time-consuming filtering processing of point cloud data in the prior art.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Point cloud correction method and device of laser scanner and storage medium
  • Point cloud correction method and device of laser scanner and storage medium
  • Point cloud correction method and device of laser scanner and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present invention provides a point cloud correction method of a laser scanner, by filtering the original data of a three-dimensional laser scanner in the process of converting into point cloud data, that is, reducing three-dimensional spatial filtering to one-dimensional linear filtering, through The one-dimensional linear filtering process smoothes the fluctuations caused by random errors, reduces the measurement thickness of the point cloud, and improves the quality of the point cloud. Compared with the three-dimensional spatial filtering in the prior art, the present invention undoubtedly greatly reduces the difficulty of filtering, the complexity of time and space, and improves the filtering efficiency. The present invention does not need to make any improvement to the hardware of the equipment, and solves the problems of high cost, great difficulty, and long time consumption in the prior art when reducing errors through hardware improvement.

[0038] The presen...

Embodiment 2

[0061] The invention provides a point cloud correction device of a laser scanner. Such as Figure 4 As shown, a schematic diagram of the internal structure of a point cloud correction device for a laser scanner provided by an embodiment of the present invention.

[0062] In this embodiment, a point cloud correction device of a laser scanner may be a PC (Personal Computer, personal computer), or may be a terminal device such as a smart phone, a tablet computer, or a portable computer. The point cloud correction device for a laser scanner at least includes: a processor 12 , a communication bus 13 , a network interface 14 and a memory 11 .

[0063] Wherein, the memory 11 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (eg, SD or DX memory, etc.), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of a point...

Embodiment 3

[0084] A storage medium, the storage medium is a computer-readable storage medium on which a point cloud correction program is stored, the point cloud correction program is a computer program, and the point cloud correction program is executed by a processor to implement the following steps:

[0085] Obtaining step: obtaining all scanning points in the original laser scanning data of the three-dimensional laser scanner;

[0086] Reading step: reading a scanning point from the original laser scanning data and recording it as a scanning point to be processed, and obtaining the scanning data of the scanning point to be processed;

[0087] Judging step: judging whether the scanning point to be processed is the first scanning point in the original laser scanning data, if so, performing the storing step; if not, performing the comparing step;

[0088] Storing step: storing the scan points to be processed in a temporary cache, and then performing a reading step;

[0089] Comparing s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a point cloud correction method for a laser scanner, which is applied to the laser scanner and comprises the following steps: acquiring all scanning points in original laser scanning data of a three-dimensional laser scanner, and reading one scanning point as a scanning point to be processed; judging whether the to-be-processed scanning point is a first scanning point or not, and if yes, storing the to-be-processed scanning point in a temporary cache and then continuing to read the scanning point; if not, judging whether the to-be-processed scanning point and the previous to-be-processed scanning point belong to the same line segment or not; if yes, storing the to-be-processed scanning points in a temporary cache, and continuing to read the scanning points; if not, taking out all the scanning points in the temporary cache, and storing the scanning data of each scanning point locally after being filtered; meanwhile, creating a new temporary cache to store the to-be-processed scanning points in the new temporary cache, and then reading the scanning points until all the scanning points are read. The invention further provides a point cloud correction device of the laser scanner and a storage medium.

Description

technical field [0001] The present invention relates to a laser scanner, in particular to a point cloud correction method, device and storage medium for a laser scanner. Background technique [0002] At present, the 3D laser scanner calculates the distance between the scanning point and the laser emission position based on the time difference between emitting the laser and receiving the returning laser, combined with the speed of light. At the same time, it cooperates with the horizontal angle and pitch angle of the scanning point to decompose to obtain the relative coordinate value. . Due to the systematic error and random error caused by internal factors of the equipment or other external environments during scanning, error fluctuations will occur in the measured scanning points. In order to ensure the accuracy of subsequent calculations, it is generally necessary to process and optimize the point cloud data obtained by the original laser scanner through later software to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T1/60
CPCG06T1/60G06T2207/10012G06T5/70
Inventor 庄所增文述生马原付小兵王江林李宁周光海肖浩威黄劲风丁永祥闫少霞赵瑞东
Owner GUANGZHOU SOUTH SATELLITE NAVIGATION INSTR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com