Mobile Laser Scanning Calibration on A Marine Platform

Szulwic, Jakub; Tysiąc, Paweł

doi:10.2478/pomr-2018-0037

Cited by 4 publications

(5 citation statements)

References 32 publications

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“…We used data from the Riegl VMZ-400 mobile system (Manufacturer: Riegl GmbH, Horn, Austria) to analyse the airborne laser-scanning data. A description of the experiment that we performed at that time can be found in References [56,57]. The mission was served by a vessel with an immersion of 1.2 m, where the scanner was attached to a relevant structure in order to assemble the platform.…”

Section: Additional Measurement Methodsmentioning

confidence: 99%

“…In this subsection, we describe the ways to register data from terrestrial and airborne systems. Due to the fact that the mobile system was described in References [56,57], we do not focus on it here, particularly because, in our research, we used it to supplement the airborne system's data from 2014. In describing our methods for particular experiments, it is very important to recreate them as well as the best possible assessment of the acquired results.…”

Section: Data Registrationmentioning

confidence: 99%

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Stability Assessment of Coastal Cliffs Incorporating Laser Scanning Technology and a Numerical Analysis

2019

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We investigated the cliff coast in Jastrzebia Gora, Poland. The measurements that were taken between 2014 and 2018 by applying terrestrial, mobile, and airborne laser scanning describe a huge geometric modification involving dislocations in a 2.5 m range. Differential maps and a volumetric change analysis made it possible to identify the most deformed cliff’s location. Part of the monitoring of coastal change involved the measurement of a cliff sector in order to determine the soil mass flow down the slope. A full geometric image of the cliff was complemented by a stability assessment that incorporated numerical methods. The analysis showed that the stability coefficients, assuming a particular soil strata layout and geotechnical parameters, are unsafely close to the limit value. Moreover, the numerical computations, which were performed under simplifying assumptions, were not able to capture a multitude of other random factors that may have an impact on the soil mass stability. Thus, displacements of both reinforced soil and gabions were detected that are intended to prevent the cliff from deforming and to protect the infrastructure in its vicinity. The array of applied measurement methods provides a basis for the development of research aimed at optimization of applied tools, safety improvements, and a rapid reaction to threats.

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Section: Additional Measurement Methodsmentioning

confidence: 99%

Section: Data Registrationmentioning

confidence: 99%

Stability Assessment of Coastal Cliffs Incorporating Laser Scanning Technology and a Numerical Analysis

2019

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“…-data processing Błaszczak-Bąk et al (2022), Kovanič et al (2020a), Szulwic and Tysiąc (2018); -integration Bakuła et al (2022), Tysiąc et al (2023); or -publication Quattrini et al (2017), Malinverni et al (2019), Pierdicca et al (2022).…”

Section: Introductionunclassified

Selected Qualitative Aspects of Lidar Point Clouds: Geoslam Zeb-Revo and Faro Focus 3d X130

Warchoł,

Karaś,

Antoń

2023

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. This paper presents a comparison of LiDAR point clouds acquired using two, different measurement techniques: static TLS (Terrestrial Laser Scanning) performed with a FARO Focus3D X130 laser scanner and a SLAM-based (Simultaneous Localization and Mapping) unit of MLS (Mobile Laser Scanning), namely GeoSLAM ZEB-REVO. After the two point clouds were brought into a single coordinate system, they were compared with each other in terms of internal accuracy and density. The density aspect was visualized using 2D density rasters, and calculated using 3 methods available in CloudCompare software. Thus, one should consider before choosing how to acquire a LiDAR point cloud whether a short measurement time is more important (ZEB-REVO) or whether higher density and measurement accuracy is more important (FARO Focus3D X130). In BIM/HBIM modeling applications, logic dictates that the TLS solution should be chosen, despite the longer data acquisition and processing time, but with a cloud with far better quality parameters that allow objects on the point cloud to be recognized. In a situation where the TLS point cloud is 20 times more dense, it allows to model objects at the appropriate level of geometric detail.

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“…Riegl VMZ/VZ-400 system elevation data accuracy has been previously assessed by Putnik (2018), taking measurements in varying locations (below the viaduct, in a tunnel and crossroad) and on different road covers (asphalt and concrete road). Szulwic and Tysiąc (2017) mapped cracks in the road using the same system and, a year later (Szulwic & Tysiąc, 2018), conducted measurements on the sea, installing the MLS on a ship. Annok (2017) assessed elevation data accuracy on the road that passed through forest and open sky area.…”

Section: Introductionmentioning

confidence: 99%

Mobile Laser Scanning Elevation Data Accuracy in Closed and Partially Open Sky Area

Annok¹,

Tammin

Liba

2021

Geodesy and Cartography

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Mobile laser scanning is being used more often in Estonia and abroad to obtain geospatial information. As the system is still new and being upgraded, different methods are being used to find out how accurately the mobile laser scanner can measure in different conditions. In this article the mobile laser scanner accuracy is being examined depending on surrounding environment and the importance of postprocessing. Mobile laser scanning elevation data accuracy obtained in difficult conditions is being assessed. Difficult conditions are considered locations where there are tall objects that interrupt the satellite signals’ trajectory to the receiver. To determine the elevation accuracy of mobile laser scanner data, coordinates with the raw broadcast and final ephemerides with the combination of the GNSS receivers’ data that were installed in ideal and not ideal environmental conditions were computed. As a result of the study, the error of the elevation data in the first polygon, situated in difficult conditions was 7 mm when the Kunda reference station data was used with raw broadcast and final ephemerides. Error in the second polygon was accordingly 17 mm and 19 mm. When calculations were conducted using raw broadcast ephemerides in a base station in an imperfect environment, the error in the first polygon was 103 mm and in the second 75 mm. When the precise ephemerides were added to base station data, the error in the first polygon was 6 mm and in the second 21 mm. From the study results, it could be concluded that the mobile laser scanning system measures within 2 cm accuracy even in a complicated environment.

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Mobile Laser Scanning Calibration on A Marine Platform

Cited by 4 publications

References 32 publications

Stability Assessment of Coastal Cliffs Incorporating Laser Scanning Technology and a Numerical Analysis

Stability Assessment of Coastal Cliffs Incorporating Laser Scanning Technology and a Numerical Analysis

Selected Qualitative Aspects of Lidar Point Clouds: Geoslam Zeb-Revo and Faro Focus 3d X130

Mobile Laser Scanning Elevation Data Accuracy in Closed and Partially Open Sky Area

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