Remote Sensing to Estimate Saturation Differences of Chosen Building Materials Using Terrestrial Laser Scanner

Suchocki, Czesław; Katzer, Jacek; Panuś, Arkadiusz

doi:10.1515/rgg-2017-0008

Cited by 12 publications

(6 citation statements)

References 12 publications

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“…The methodology, which was developed and tested during previous research programmes [30,31] and harnessed by the research team, is comprised of four main stages. The sequence of four main stages (1-planning the measurement; 2-TLS data acquisition; 3-pre-processing of data; 4-post-processing of point clouds) is presented in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Application of TLS Technology for Documentation of Brickwork Heritage Buildings and Structures

2022

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Remote measurement of historic buildings and structures using the technology of terrestrial laser scanning (TLS) is becoming a more and more popular approach for conducting inventory activities, documentation and conservation works. In this paper, TLS was harnessed for analysis of historic brickwork structures from the 19th century. During the research programme, chosen brickwork heritage buildings were scanned. Based on the collected geometric data of the point cloud, it was possible to create an exact model of the scanned objects. The obtained radiometric information of the point cloud allowed us to identify changes in the surface of walls, such as cavities, cracks and previous repairs. Moisture was also identified in some cases. The conducted tests enabled the identification of brickwork in need of urgent repair. It was possible to assess the general technical state of the tested structures. The possibilities and limitations of the TLS diagnostic methodology of analysing the quality of historic brickwork and its future possible applications were indicated.

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Section: Methodsmentioning

confidence: 99%

Application of TLS Technology for Documentation of Brickwork Heritage Buildings and Structures

2022

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“…The reflectance of a scanned surface depends on the physio-chemical properties of the scanned objects. Thus, Equation (2) can be simplified further [51]:…”

Section: Radiometric Information Of a Laser Beammentioning

confidence: 99%

Comparison of Time-of-Flight and Phase-Shift TLS Intensity Data for the Diagnostics Measurements of Buildings

Suchocki

2020

Materials

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In recent years, the terrestrial laser scanning system (TLS) has become one of the most popular remote and nondestructive testing (NDT) methods for diagnostic measurements of buildings and structures as well as for the assessment of architectural heritage. Apart from 3D coordinates, the power of a laser beam backscattered from the scanned object can be captured by TLS. The radiometric information of the point cloud, called “intensity”, can provide information about changes in the physio–chemical properties of the scanned surface. This intensity can be effectively used to detect defects in the surfaces of walls, such as cracks and cavities, moisture, biodeterioration (mosses and lichens) or weathered parts of the wall. Manufacturers of TLS mainly use two different principles for distance measurement, time-of-flight (TOF) and phase-shift (PS). The power of energy in both types of rangefinders might be absorbed or reflected in a slightly different way and provide more or less detailed radiometric point cloud information. The main aim of this investigation is to compare TOF and PS scanners in the context of using TLS intensity data for the diagnostics of buildings and other structures. The potential of TLS intensity data for detecting defects in building walls has been tested on multiple samples by two TOF (Riegl VZ400i, Leica ScanStation C10) and two PS (Z + F 5016 IMAGER, Faro Focus3D) scanners.

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“…This value is determined by the change of colour and roughness of the scanned surface [22][23][24]. The most recent research carried out by Suchocki et al [25] and Suchocki et al [26] shows that the change of humidity of constructional materials has also a considerable effect on the change of intensity. If we assume that the disruptions of a uniform concrete surface are caused by cavities and cracks, the power of the laser beam reflectance must change considerably due to the changes in roughness and colour of the surface.…”

Section: Defect Detection Using Reflectance Data From Terrestrial Las...mentioning

confidence: 99%

Metrology and Measurement Systems

Suchocki¹,

Jagoda²,

Obuchovski³

et al. 2018

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Terrestrial laser scanning (TLS) is one of the instruments for remote detection of damage of structures (cavities, cracks) which is successfully used to assess technical conditions of building objects. Most of the point clouds analysis from TLS relies only on spatial information (3D-XYZ). This study presents an approach based on using the intensity value as an additional element of information in diagnosing technical conditions of architectural structures. The research has been carried out in laboratory and field conditions. Its results show that the coefficient of laser beam reflectance in TLS can be used as a supplementary source of information to improve detection of defects in constructional objects.

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Remote Sensing to Estimate Saturation Differences of Chosen Building Materials Using Terrestrial Laser Scanner

Abstract: Terrestrial Laser Scanner (TLS) method which is commonly used for geodetic applications has a great potential to

Cited by 12 publications

References 12 publications

Application of TLS Technology for Documentation of Brickwork Heritage Buildings and Structures

Application of TLS Technology for Documentation of Brickwork Heritage Buildings and Structures

Comparison of Time-of-Flight and Phase-Shift TLS Intensity Data for the Diagnostics Measurements of Buildings

Metrology and Measurement Systems

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