Terrestrial Laser Scanning of Extended Cliff Sections in Dynamic Environments: Parameter Analysis

Olsen, Michael J.; Johnstone, Elizabeth; Driscoll, Neal W.; Ashford, Scott A.; Kuester, Falko

doi:10.1061/(asce)0733-9453(2009)135:4(161)

Cited by 68 publications

(50 citation statements)

References 7 publications

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“…More discussion of feature extraction will be presented in Section 5.6.9. Various calculations and analyses can then be applied to these models to permit complex calculations such as volume change (e.g., [26]). …”

Section: Generating Models From the Point Cloudmentioning

confidence: 99%

“…Ussyshkin [17] presents additional potential applications of MLS derived from existing airborne applications, such as topography, utility transmission corridors, coastal erosion (e.g., [26]), flood risk mapping, watershed analysis, etc. Duffell and Rudrum [1] discuss additional applications of ALS, which are applicable to MLS, such as feasibility studies, route alignment, environmental assessments, 3D visualizations, noise assessment, vegetation management planning, and accident investigation.…”

Section: Applicationsmentioning

confidence: 99%

“…Olsen et al [26] provide background on TLS (stop and go) of long coastal cliff sections. TLS provides many advantages over traditional methods of monitoring coastal erosion, these advantages primarily coming from the density of the data points collected on the cliff faces.…”

Section: Coastal Changementioning

confidence: 99%

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Synthesis of Transportation Applications of Mobile LIDAR

et al. 2013

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A thorough review of available literature was conducted to inform of advancements in mobile LIDAR technology, techniques, and current and emerging applications in transportation. The literature review touches briefly on the basics of LIDAR technology followed by a more in depth description of current mobile LIDAR trends, including system components and software. An overview of existing quality control procedures used to verify the accuracy of the collected data is presented. A collection of case studies provides a clear description of the advantages of mobile LIDAR, including an increase in safety and efficiency. The final sections of the review identify current challenges the industry is facing, the guidelines that currently exist, and what else is needed to streamline the adoption of mobile LIDAR by transportation agencies. Unfortunately, many of these guidelines do not cover the specific challenges and concerns of mobile LIDAR use as many have been developed for airborne LIDAR acquisition and processing. From this review, there is a lot of discussion on "what" is being done in practice, but not a lot on "how" and "how well" it is being done. A willingness to share information going forward will be important for the successful use of mobile LIDAR.

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Section: Generating Models From the Point Cloudmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

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Synthesis of Transportation Applications of Mobile LIDAR

et al. 2013

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“…Laser scanning [also known as Light Detection and Ranging (LiDAR)] has been applied to a wide variety of industries: forestry management [1], floodplain mapping [2], landslide monitoring [3] hazard identification [4] and more recently condition assessment [4][5][6][7]. Laser scanning works by laser triangulation, phase shift, or time of fight [8] and can be used from an aerial or terrestrial unit.…”

Section: Introductionmentioning

confidence: 99%

“…The LiDAR point clouds consist only of individual points with x-, y-, zcoordinates, affiliated red-green-blue values, and intensity values. This format is a major obstacle for the engineering usage of the data, especially given that the associated firmware for ALS and TLS systems are devised primarily for data viewing [3,8].…”

Section: Introductionmentioning

confidence: 99%

Processing of Terrestrial Laser Scanning Point Cloud Data for Computational Modelling of Building Facades

Laefer¹,

Truong-Hong²,

Fitzgerald³

2011

CSENG

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Abstract:With the rapidly increasing availability of laser scanning data and the growing pressure to use it as the basis for computational models, there has been heighten interest in quickly, costeffectively, and accurately processing the resulting point cloud data sets so that they are compatible for importation into computational models. This paper presents traditional strategies for solid model generation and examines in detail innovations and continuing limitations of recent patents, newly published research, and some currently available commercial programs for the transformation of laser scanning point cloud data into solid models appropriate for finite element method meshing and various meshing strategies particularly well-suited for point cloud data.

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Mapping Coastal Erosion of a Mediterranean Cliff with a Boat‐Borne Laser Scanner: Performance, Processing, and Cliff Erosion Rate

Giuliano

Dewez

Lebourg

et al. 2022

3D Digital Geological Models

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Terrestrial laser scanners (TLS) are well known for providing an efficient means to monitor coastal cliff erosion. Cliffs along micro-tidal coasts, however, have often escaped quantification because the narrow or absent coastal platforms do not offer stable and embracing vantage points. To circumvent this issue, mobile laser scanning surveys from a boat can be used. We present a case study from Provence-Alpes-Côte-d'Azur (Mediterranean coastsouthern France) to quantify cliff erosion in such micro-tidal environments. Three surveys were sub-contracted over a period of 17 months to monitor a 3.5-km-long cliff of Carry-le-Rouet (15km west of Marseille). Data quality was check independently using man-made planar walls positioned above the cliff face, to retrieve survey precision and change detection thresholds.Boat-borne mobile lidar system was capable of describing planar features with a precision of 3-4 cm (epoch 1 and 2) and improved to 2.6 cm (epoch 3) with point densities around 100 pts/m². Absolute positioning accuracy varied between 0.1 cm and 0.3 cm. Because the coastline is very sinuous, we describe a method to unfold the point clouds using a continuous analytical surface made of vertical planes joined by arcs of cylinders and perform the analysis in 2.5D.Change was detected using a unique, conservative, threshold of 14 cm (99% quantile estimated on plane change) on grids of 10 x 10 cm pixels. Integrated over the entire cliff face, the average annual cliff recession rate at Carry-le-Rouet is 1.1cm/year. In 17 months, erosion was three times more effective in sandstone and marls layers than in calcarenites and conglomerates.Erosion varies vertically with erosion three times more effective in the lower 25 m of the cliffs than above. Despite imperfections, boat-borne laser scanning system are capable of delivering meaningful erosion data even in this low erosion context.

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Terrestrial Laser Scanning of Extended Cliff Sections in Dynamic Environments: Parameter Analysis

Cited by 68 publications

References 7 publications

Synthesis of Transportation Applications of Mobile LIDAR

Synthesis of Transportation Applications of Mobile LIDAR

Processing of Terrestrial Laser Scanning Point Cloud Data for Computational Modelling of Building Facades

Mapping Coastal Erosion of a Mediterranean Cliff with a Boat‐Borne Laser Scanner: Performance, Processing, and Cliff Erosion Rate

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