Print Email Facebook Twitter Terrestrial laser scanning for geometry extraction and change monitoring of rubble mound breakwaters Title Terrestrial laser scanning for geometry extraction and change monitoring of rubble mound breakwaters Author Puente, I. (University of Vigo) Lindenbergh, R.C. (TU Delft Optical and Laser Remote Sensing) González-Jorge, H. (University of Vigo) Arias, P. (University of Vigo) Date 2014-05-28 Abstract Rubble mound breakwaters are coastal defense structures that protect harbors and beaches from the impacts of both littoral drift and storm waves. They occasionally break, leading to catastrophic damage to surrounding human populations and resulting in huge economic and environmental losses. Ensuring their stability is considered to be of vital importance and the major reason for setting up breakwater monitoring systems. Terrestrial laser scanning has been recognized as a monitoring technique of existing infrastructures. Its capability for measuring large amounts of accurate points in a short period of time is also well proven. In this paper we first introduce a method for the automatic extraction of face geometry of concrete cubic blocks, as typically used in breakwaters. Point clouds are segmented based on their orientation and location. Then we compare corresponding cuboids of three co-registered point clouds to estimate their transformation parameters over time. The first method is demonstrated on scan data from the Baiona breakwater (Spain) while the change detection is demonstrated on repeated scan data of concrete bricks, where the changing scenario was simulated. The application of the presented methodology has verified its effectiveness for outlining the 3D breakwater units and analyzing their changes at the millimeter level. Breakwater management activities could benefit from this initial version of the method in order to improve their productivity. Subject Breakwater modelingChange detectionLiDARPoint cloudSegmentation To reference this document use: http://resolver.tudelft.nl/uuid:1964edce-d84f-4c94-bde6-1978e4a9eca4 DOI https://doi.org/10.5194/isprsannals-II-5-289-2014 ISSN 2194-9042 Source ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences, 2 (5), 289-295 Event ISPRS Technical Commission V Symposium, 2014-06-23 → 2014-06-25, Riva del Garda, Italy Part of collection Institutional Repository Document type journal article Rights © 2014 I. Puente, R.C. Lindenbergh, H. González-Jorge, P. Arias Files PDF isprsannals_II_5_289_2014.pdf 957.5 KB Close viewer /islandora/object/uuid:1964edce-d84f-4c94-bde6-1978e4a9eca4/datastream/OBJ/view