Some Issues Regarding the Calibration of the Terrestrial Laser Scanner Leica Scanstation C10

Antanavičiūtė, Urtė; Obuchovski, Romuald; Paršeliūnas, Eimuntas; Popovas, M. G. Darius

doi:10.3846/20296991.2013.840356

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…The simplification of the procedures is needed as more as the buildings have a remarkable extension and complex shapes. To ensure the reliability of the measurement data, the calibration of the measurement systems is a necessary preliminary step [24]- [27].…”

Section: Test Case Peculiaritiesmentioning

confidence: 99%

Extraction of a floor plan from a points cloud: some metrological considerations

D’Emilia¹,

Chiominto²,

Gaspari

et al. 2023

Acta IMEKO

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The design of evacuation plans for safety purposes is based on the graphical synthesis and visualization of data derived from high-performance measurement systems. The data post-processing requires some suitable procedures including many steps, to obtain the information needed. These are related to the global use of the measurement system, to the real measurement operating conditions, to the complexity of the building, to the simplifying hypotheses, to the data management. As a preliminary step, this work outlines a procedure for extracting a floor plan from a points cloud acquired by means of a laser scanner. The test case is a baroque cathedral, being a large structure and presenting some elements of irregular geometry. Some critical passages have been examined, presenting similar widths but different characteristics i.e., flat and regular geometries of the elements on the walls, in some cases, statues, columns and adornments, in some others. The data management plays a key-role in the correct interpretation of the outcomes, having a great impact on the results reliability. The obtained estimated variability of the passage width is in the order of few tenth centimeters. This is strictly related to the specific operating procedure. How this affects simulation software for route optimization of emergency paths will be the object of further investigations.

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Section: Test Case Peculiaritiesmentioning

confidence: 99%

Extraction of a floor plan from a points cloud: some metrological considerations

D’Emilia¹,

Chiominto²,

Gaspari

et al. 2023

Acta IMEKO

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“…TLS point-cloud TLS 3D point-cloud was obtained using a Leica ScanStation C10, a short-range time of flight TLS with a 360° (horizontally) x 270° (vertically) field of view (FoV), a maximum scanning speed up to 50,000 points per second and characterised by high positional accuracy. For distances up to 100 m, the systematic error of C10 does not exceed 3.7 mm (Antanavičiūtė et al, 2013). C10 uses a green pulsed laser (532 nm of wavelength) for point coordinates detection and an integrated 4-megapixel RGB camera to acquire colour information for each point.…”

Section: Data Collectionmentioning

confidence: 99%

Proposal of an integrated 3D architectural survey method for application in historic agri-food building analysis and representation

et al. 2023

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In Italy historic agri-food buildings can be considered a relevant material expression and testimony of century-old agriculture and food processing practices handed down by generations. Recently they have gained ever-growing importance as a part of the wider architectural heritage. As such, they deserve dedicated general surveys to build a thorough knowledge of their distinctive characteristics and investigate their current condition, this way setting the basis for the implementation of planning and management actions for their sustainable valorisation. To this end, building information modelling (BIM) can be considered an efficient strategy to preserve construction information by creating 3D models based on surveys of the built heritage. To acquire in fast and accurate way geometric, reflectance and colour data of rural buildings, as 3D point-cloud, the terrestrial laser scanner (TLS) represents a powerful tool. The traditional TLS-based survey methods, in the context of historic agricultural buildings, have several limitations, mainly due to the presence of inaccessible parts and bulky machinery once used for processing and storage. In the present research, to overcome these issues and thus have a complete survey, we describe a proposal of an integrated methodology for obtaining 3D point-cloud data of existing rural agri-food buildings based on the integrated use of TLS, handheld scanner (HS), and unmanned aerial vehicles (UAV) instruments. The proposed methodology was tested in surveying three historic agri-food buildings and the accuracy of the obtained 3D point-cloud was calculated by means of the root mean square error (RMSE) on the X, Y, and Z alignment of the two different 3D point-clouds in correspondence of the used B/W target. Moreover, a measure of the distance between two merged 3D point-clouds, in their overlap area has been performed using the multiscale model to model cloud comparison (M3C2). RMSE analysis always shows values lesser than 1 cm and M3C2 shows values between 0 and about 6 cm.

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“…Several studies e.g. Abbas et al (2013) and Antanavičiūtė et al (2013) have investigated the calibration parameters of laser scanners Leica ScanStation C10. The results of the studies revealed only minor systematic errors in range measurement and in both horizontal and vertical angle measurement.…”

Section: Deformation Monitoring Using a Tlsmentioning

confidence: 99%

Geodetic monitoring of bridge deformations occurring during static load testing

Mill

Ellmann

Kiisa

et al. 2015

The Baltic Journal of Road and Bridge Engineering

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Terrestrial laser scanning technology has developed rapidly in recent years and has been used in various applications but mainly in the surveying of different buildings and historical monuments. The use for terrestrial laser scanning data for deformation monitoring has earlier been tested although conventional surveying technologies are still more preferred. Since terrestrial laser scanners are capable of acquiring a large amount of highly detailed geometrical data from a surface it is of interest to study the metrological advantages of the terrestrial laser scanning technology for deformation monitoring of structures. The main intention of this study is to test the applicability of terrestrial laser scanning technology for determining range and spatial distribution of deformations during bridge load tests. The study presents results of deformation monitoring proceeded during a unique bridge load test. A special monitoring methodology was developed and applied at a static load test of a reinforced concrete cantilever bridge built in 1953. Static loads with the max force of up to 1961 kN (200 t) were applied onto an area of 12 m² in the central part of one of the main beams; the collapse of the bridge was expected due to such an extreme load. Although the study identified occurrence of many cracks in the main beams and significant vertical deformations, both deflection (–4.2 cm) and rising (+2.5 cm), the bridge did not collapse. The terrestrial laser scanning monitoring results were verified by high-precision levelling. The study results confirmed that the TLS accuracy can reach ±2.8 mm at 95% confidence level.

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Some Issues Regarding the Calibration of the Terrestrial Laser Scanner Leica Scanstation C10

Cited by 7 publications

References 8 publications

Extraction of a floor plan from a points cloud: some metrological considerations

Extraction of a floor plan from a points cloud: some metrological considerations

Proposal of an integrated 3D architectural survey method for application in historic agri-food building analysis and representation

Geodetic monitoring of bridge deformations occurring during static load testing

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