Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing
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2017
- ISIDORE Id: 10670/1.dc3471...
- hal: hal-01517587
- doi: 10.1080/22797254.2017.1300047
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info:eu-repo/semantics/altIdentifier/doi/10.1080/22797254.2017.1300047
info:eu-repo/semantics/OpenAccess
Mots-clés
Indirect georeferencing Direct georeferencing Multi-temporal surveys Geomorphological evolution Coastal monitoring Terrestrial Laser ScanningSujets proches
Land surveys Government surveys Service of process Service of papers Abuse of process ProcessCiter ce document
Marion Jaud et al., « Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.1080/22797254.2017.1300047
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Résumé
The georeferencing process is crucial to the accuracy of Terrestrial Laser Scanner data, in particular in the context of diachronic studies relying on multi-temporal surveys. The use of Ground Control Points in the georeferencing process can however be complex when confronted with the practical constraints of coastal surveying.A simple and quick alternative method called “pseudo-direct georeferencing” is proposed in the present paper. This method involves internal inclinometers to measure roll and pitch angles and a centimetric GPS to measure the position of the TLS center and the position of one backsight target. When assessing the transformational uncertainty by using a set of independent ground validation points for both classical indirect and proposed pseudo-direct methods, we respectively obtain Root Mean Square errors of 4.4 cm for the indirect method and 3.8 cm for the pseudo-direct method
