文章基本信息

标题：Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing
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作者：Marion Jaud ; Pauline Letortu ; Emmanuel Augereau 等
期刊名称：European Journal of Remote Sensing
电子版ISSN：2279-7254
出版年度：2017
卷号：50
期号：In Progress
页码：163-174
DOI：10.1080/22797254.2017.1300047
摘要：ABSTRACT The georeferencing process is crucial to the accuracy of terrestrial laser scanner (TLS) 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.
关键词：Terrestrial laser scanning ; coastal monitoring ; direct georeferencing ; indirect georeferencing ; multi; temporal surveys ; geomorphological evolution