Error entropy model based determination of minimum detactable deformation magnitude of terrestrial laser scanning

Xijiang Chen, Kegen Yu

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

Deformation is typically estimated by comparing scans of terrestrial laser scanner (TLS) over the same area but at different time instants. However, such a method can only estimate the difference between two successive surveys, which may be caused by instrumental error and registration error instead of the real deformation, affecting the reliability of deformation monitoring. In order to improve the reliability of TLS-based deformation monitoring, it is necessary to estimate the errors in TLS measurements and determine the precursory displacements that can be detected. In this paper, the error entropy model is exploited for inspecting the threshold value in deformation monitoring, i.e. the minimum detectable deformation magnitude of a TLS. The experimental results demonstrate that deformation greater than the threshold calculated by the proposed error entropy based method can be reliably detected.

Original languageEnglish
Title of host publication2016 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Proceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages685-688
Number of pages4
Volume2016-November
ISBN (Electronic)9781509033324
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes
Event36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016 - Beijing, China
Duration: 10 Jul 201615 Jul 2016

Other

Other36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016
CountryChina
CityBeijing
Period10/07/1615/07/16

Keywords

  • deformation monitoring
  • Error entropy
  • point cloud error space
  • terrestrial laser scanning

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