Analyzing the geometric accuracy of simple shaped reference object models created by terrestrial laser scanners

Gumus, Kutalmis; Erkaya, Halil

doi:10.5897/ijps11.344

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…We used an Optech ILRIS 3D (wavelength: 1,500 nm). The scanning distance was~270 m, which is within the device range of 500 to 600 m. According to the manufacturer, the precision of the obtained model is 7 mm for the distance and 8 mm for the position at 100 m. There is a lack of critical review of the ILRIS 3D characteristics, but this precision remains consistent with different tests done with other scanners Leica, Mensi, Riegl, Faro, or Z+F (Boehler, Bordas Vicent, & Marbs, 2003;Gordon, Lichti, Stewart, & Tsakiri, 2000;Gumus & Erkaya, 2011).…”

Section: Terrestrial Laser Scanningsupporting

confidence: 66%

Recent evolution of an ice‐cored moraine at the Gentianes Pass, Valais Alps, Switzerland

et al. 2018

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Lateral moraines located in permafrost environments often preserve large amounts of both glacier and periglacial ice. To understand how ice‐cored moraines located in high alpine environments evolve in a context of both glacier retreat and permafrost degradation, we performed 11 terrestrial laser‐scanning measurement campaigns between 2007 and 2014 on a highly anthropogenic overprinted moraine prone to instability. Resulting comparison of the subsequent 3D models allowed to qualitatively and quantitatively analyze the morphological evolution of the moraine. The comparisons indicate a very high geomorphic activity of the moraine including large areas affected by downslope movements of blocks and 10 landslides with a volume between 24 ± 1 and 1,138 ± 47 m3. Data also indicated a very strong ice melt with a loss of ice thickness locally reaching 17.7 m at the foot of the moraine. These results, compared with resistivity and thermal measurements of the ground, suggest the combined role of ice loss at the foot of the moraine and the permafrost activity/warming in triggering these processes.

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Section: Terrestrial Laser Scanningsupporting

confidence: 66%

Recent evolution of an ice‐cored moraine at the Gentianes Pass, Valais Alps, Switzerland

et al. 2018

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“…Investigation and analysis of errors occurring in measurements from pulsed timeof-flight TLS was carried out by Reshetyuk (2006) and Gottwald (2008). Gumus and Erkaya (2011) focused on the investigation of the positioning accuracy of TLS using 3D models obtained from point cloud data and Fernández Pareja et al (2013) who presented a procedure for assessing the quality of the TLS measurements and in order to estimate an uncertainty value for the points in the cloud. In recent years, the method of selfcalibration has been a popular approach for laser scanner calibration (e.g., Parian and Gruen 2005, Lichti and Licht 2006, Lichti 2007.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a pulsed terrestrial laser scanner based on ISO standards

Tsakiri

Pagounis

Arabatzi

2015

Surf. Topogr.: Metrol. Prop.

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The evaluation of the accuracy and precision of measuring equipment is critical in order to achieve results that meet the specifications of a given project. Standard calibration models and field procedures exist for all traditional surveying instruments, but are still lacking for recently developed technologies like terrestrial laser scanners (TLS). The main reason is limited knowledge of errors that affect these systems, owing to the proprietary design of the scanners and their software, and the integration of many potential sources of error. Owing to the difficulty of separating the different error sources of TLS, it is proposed in this paper that a test procedure can assess the overall achievable precision for a scanner instrument without individual errors being known. The proposed tests are based on the International Organization for Standardization specifications for geodetic instruments (www.iso.org). The tests can be performed in either a controlled or uncontrolled environment, which is advantageous for on-the-job calibration. A pulsed terrestrial laser scanner (Leica Scanstation 2) was used as a test subject and the evaluation results indicated that the specific instrument performed well within the manufacturer's specifications.

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“…In early TLS accuracy studies, prismatic objects have been measured and compared [84][85][86][87] to either nominal or reference values to evaluate TLS systems. More careful metrological performance evaluation with carefully constructed artifacts has also been reported in the literature.…”

Section: Pre-calibrated Artifact-based Methodsmentioning

confidence: 99%

Performance evaluation of terrestrial laser scanners—a review

Muralikrishnan¹

2021

Meas. Sci. Technol.

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Terrestrial laser scanners (TLSs) are increasingly used in several applications such as reverse engineering, digital reconstruction of historical monuments, geodesy and surveying, deformation monitoring of structures, forensic crime scene preservation, manufacturing and assembly of engineering components, and architectural, engineering, and construction applications. The tolerances required in these tasks range from few tens of millimeters (for example, in historical monument digitization) to few tens of micrometers (for example, in high precision manufacturing and assembly). With numerous TLS instrument manufacturers, each offering multiple models of TLSs with idiosyncratic specifications, it is a considerable challenge for users to compare instruments or evaluate their performance to determine if they meet specifications. As a result, considerable efforts have been made by research groups across the world to model TLS error sources and to develop specialized performance evaluation test procedures. In this paper, we review these efforts including recent work to develop documentary standards for TLS performance evaluation and discuss the role of these test procedures in establishing metrological traceability of TLS measurements.

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Analyzing the geometric accuracy of simple shaped reference object models created by terrestrial laser scanners

Cited by 6 publications

References 7 publications

Recent evolution of an ice‐cored moraine at the Gentianes Pass, Valais Alps, Switzerland

Recent evolution of an ice‐cored moraine at the Gentianes Pass, Valais Alps, Switzerland

Evaluation of a pulsed terrestrial laser scanner based on ISO standards

Performance evaluation of terrestrial laser scanners—a review

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