Using Error Entropy to Evaluate Point Cloud Uncertainty Influenced by Spot

CHEN Xijiang; HUA Xianghong; ZHANG Guang; WU Hao; AN Qing

doi:10.13203/j.whugis20140799

Volume 42 Issue 6

Jun. 2017

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Geomatics and Information Science of Wuhan University > 2017 > 42(6): 864-868. > DOI: 10.13203/j.whugis20140799

CHEN Xijiang, HUA Xianghong, ZHANG Guang, WU Hao, AN Qing. Using Error Entropy to Evaluate Point Cloud Uncertainty Influenced by Spot[J]. Geomatics and Information Science of Wuhan University, 2017, 42(6): 864-868. DOI: 10.13203/j.whugis20140799

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Using Error Entropy to Evaluate Point Cloud Uncertainty Influenced by Spot

CHEN Xijiang^{1, 2, 3,},
HUA Xianghong^4, ,,
ZHANG Guang¹,
WU Hao¹,
AN Qing⁵

1.
School of Resource and Environment Engineering, Wuhan University of Technology, Wuhan, 430079, China
2.
Postdoctors Innovation and Practice Base of Wuhan Geomatics Institute, Wuhan 430079, China
3.
Key Laboratory for Digital Land and Resources of Jiangxi Province, East China University of Technology, Nanchang 330013, China
4.
School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
5.
Wuhan Optics Valley Bei Dou Holding Group Company, Wuhan 430079, China

Funds:

CRSRI Open Research Program CKWV2015230/KY

the National Natural Science Foundation of China 41501502

the National Natural Science Foundation of China 41674005

the National Natural Science Foundation of China 41304001

the National Natural Science Foundation of China 41464001

the Key Laboratory for Digital Land and Resources of Jiangxi Province, East China University of Technology DLLJ201601

the Open Foundation of Postdoctors Innovation and Practice Base of Wuhan Geomatics Institute WGF2016002;

the Science and Technology Research Project of Jiang Xi Education Department GJJ150592

More Information

Author Bio:
CHEN Xijiang, PhD, lecturer, specializes in terrestrial laser scanning. E-mail: jg_0421@163.com
Corresponding author:
HUA Xianghong, PhD, professor. E-mail: xxhua@sgg.whu.edu.en
Received Date: October 16, 2016
Published Date: June 04, 2017

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Abstract

Abstract

The spot influences the positional accuracy of terrestrial laser scanning. A Laser point in the spot is uncertain and the description of this uncertainty directly relates to the evaluation of positional accuracy. This paper introduces error entropy into the evaluation of point cloud uncertainty related to the spot. Point information entropy is deduced by using The probability density function of the laser point in the spot; and error entropy is obtained based on the relationship between error entropy and information entropy and evident in the relationship between error entropy and spot size; introducing average error entropy into the evaluation of point cloud uncertainty. The evaluation of average error entropy as a measure of point cloud accuracy influenced by laser spot was verified by an analysis of different scanning intervals, thus an evaluation of point cloud uncertainty influenced by the spot was realized.
- information entropy,
- error entropy,
- point cloud,
- spot,
- uncertainty

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References (10)

References

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