Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing

Abstract : 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
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Contributor : Pauline Letortu <>
Submitted on : Wednesday, May 3, 2017 - 2:24:54 PM
Last modification on : Wednesday, October 2, 2019 - 4:04:56 PM

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Marion Jaud, Pauline Letortu, Emmanuel Augereau, Nicolas Le Dantec, Mickael Beauverger, et al.. Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing. European Journal of Remote Sensing, Taylor & Francis, 2017, 50 (1), pp.163-174. ⟨10.1080/22797254.2017.1300047⟩. ⟨hal-01517587⟩

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