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Error in target-based georeferencing and registration in terrestrial laser scanning

Error in target-based georeferencing and registration in terrestrial laser scanning
Error in target-based georeferencing and registration in terrestrial laser scanning
Terrestrial laser scanning (TLS) has been used widely for various applications, such as measurement of movement caused by natural hazards and Earth surface processes. In TLS surveying, registration and georeferencing are two essential steps, and their accuracy often determines the usefulness of TLS surveys. So far, evaluation of registration and georeferencing errors has been based on statistics obtained from the data processing software provided by scanner manufacturers. This paper demonstrates that these statistics are incompetent measures of the actual registration and georeferencing errors in TLS data and, thus, should no longer be used in practice. To seek a suitable replacement, an investigation of the spatial pattern and the magnitude of the actual registration and georeferencing errors in TLS data points was undertaken. This led to the development of a quantitative means of estimating the registration- or georeferencing-induced positional error in point clouds. The solutions proposed can aid in the planning of TLS surveys where a minimum accuracy requirement is known, and are of use for subsequent analysis of the uncertainty in TLS datasets.
terrestrial laser scanning (TLS), accuracy, error, georeferencing, registration, point clouds
0098-3004
54-64
Fan, L.
ca106119-a91a-4c08-867b-daa80c35f778
Smethurst, J.A.
8f30880b-af07-4cc5-a0fe-a73f3dc30ab5
Atkinson, P.M.
96e96579-56fe-424d-a21c-17b6eed13b0b
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Fan, L.
ca106119-a91a-4c08-867b-daa80c35f778
Smethurst, J.A.
8f30880b-af07-4cc5-a0fe-a73f3dc30ab5
Atkinson, P.M.
96e96579-56fe-424d-a21c-17b6eed13b0b
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c

Fan, L., Smethurst, J.A., Atkinson, P.M. and Powrie, W. (2015) Error in target-based georeferencing and registration in terrestrial laser scanning. Computers & Geosciences, 83, 54-64. (doi:10.1016/j.cageo.2015.06.021).

Record type: Article

Abstract

Terrestrial laser scanning (TLS) has been used widely for various applications, such as measurement of movement caused by natural hazards and Earth surface processes. In TLS surveying, registration and georeferencing are two essential steps, and their accuracy often determines the usefulness of TLS surveys. So far, evaluation of registration and georeferencing errors has been based on statistics obtained from the data processing software provided by scanner manufacturers. This paper demonstrates that these statistics are incompetent measures of the actual registration and georeferencing errors in TLS data and, thus, should no longer be used in practice. To seek a suitable replacement, an investigation of the spatial pattern and the magnitude of the actual registration and georeferencing errors in TLS data points was undertaken. This led to the development of a quantitative means of estimating the registration- or georeferencing-induced positional error in point clouds. The solutions proposed can aid in the planning of TLS surveys where a minimum accuracy requirement is known, and are of use for subsequent analysis of the uncertainty in TLS datasets.

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More information

Accepted/In Press date: 29 June 2015
e-pub ahead of print date: 6 July 2015
Published date: October 2015
Keywords: terrestrial laser scanning (TLS), accuracy, error, georeferencing, registration, point clouds
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 378585
URI: http://eprints.soton.ac.uk/id/eprint/378585
ISSN: 0098-3004
PURE UUID: 87fb76a2-28f4-48e4-a688-0e8f71a7acf9
ORCID for P.M. Atkinson: ORCID iD orcid.org/0000-0002-5489-6880
ORCID for W. Powrie: ORCID iD orcid.org/0000-0002-2271-0826

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Date deposited: 08 Jul 2015 16:07
Last modified: 15 Mar 2024 02:48

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Contributors

Author: L. Fan
Author: J.A. Smethurst
Author: P.M. Atkinson ORCID iD
Author: W. Powrie ORCID iD

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