scholarly journals Approximation Of Scours Using Terrestrial 3D Laser Scanning

2015 ◽  
Vol 5 (1) ◽  
pp. 31-36
Author(s):  
Andreea Florina Jocea ◽  
E. G. Crăciun ◽  
A. Anton
Keyword(s):  
Experimental Study ◽  
Mathematical Models ◽  
Present Article ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Bridge Pier ◽  
Design Stage ◽  
Terrestrial Laser Scanner ◽  
3D Laser Scanning ◽  
Over Time

Abstract In designing artwork as bridges, hydraulic calculations have a very important role due to the fact that they are behind their sizing. Bridge designer must therefore possess knowledge of hydrology, hydraulics of bridges and river banks regularization. A problem that arises during the design stage of bridges is the scour phenomenon surrounding bridge pier. Over time, there have been conducted a number of studies which led to the provision of a plurality of mathematical models that are intended scour prediction. In the present article we will present an experimental study to determine the bed profile and measurement of scours products around a pier bridge using 3D terrestrial laser scanner.

scholarly journals Applicability of 3D laser scanning in precision horticulture

2011 ◽  
Vol 17 (4-5) ◽  
Author(s):  
J. Tamás ◽  
P. Riczu ◽  
G. Nagy ◽  
A. Nagy ◽  
T. Jancsó ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Precision Agriculture ◽  
Laser Scanning ◽  
Technological Development ◽  
Laser Scanner ◽  
Terrestrial Laser Scanner ◽  
3D Laser Scanning ◽  
Regional Research ◽  
Biophysical Parameters ◽  
The University

Due to the technological development, remote sensing instruments and methods have become widespread in all segments of life (from precision agriculture through architecture to medicine). Among the innovative development of remote sensing instruments the 3D laser scanner is of outstanding importance. Horticultural applicability of terrestrial laser scanning technique is a new innovation in the precision agriculture. The structure of trees and branches, the canopy extension, the fruit yield, which can help to recognize some biophysical parameters, can be determined. The examination was carried out with Leica ScanStation C10 terrestrial laser scanner in the Study and Regional Research Farm of the University of Debrecen near Pallag. In this article the measuring principle, the parameters and horticulture applicability of the terrestrial laser scanner are presented.

scholarly journals 3D MODELS OF OBJECTS IN PROCESS OF RECONSTRUCTION

2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Jovana Radović
Keyword(s):  
Laser Scanning ◽  
Laser System ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Terrestrial Laser Scanning ◽  
3D Models ◽  
Terrestrial Laser Scanner ◽  
Accurate Data ◽  
Final Model ◽  
Airborne Laser

Within the last years terrestrial and airborne laser scanning has become a powerful technique for fast and efficient three-dimensional data acquisition of different kinds of objects. Airborne laser system (LiDAR) collects accurate georeferenced data of extremely large areas very quickly while the terrestrial laser scanner produces dense and geometrically accurate data. The combination of these two segments of laser scanning provides different areas of application. One of the applications is in the process of reconstruction of objects. Objects recorded with laser scanning technology and transferred into the final model represent the basis for building an object as it was original. In this paper, there will be shown two case studies based on usage of airborne and terrestrial laser scanning and processing of the data collected by them.

The Horizontal Deformation Analysis of High-rise Buildings

2017 ◽  
Author(s):  
Žymantas Gražulis ◽  
Boleslovas Krikštaponis ◽  
Algirdas Neseckas ◽  
Darius Popovas ◽  
Raimundas Putrimas ◽  
...  
Keyword(s):  
Power Plants ◽  
Laser Scanning ◽  
Thermal Power ◽  
Laser Scanner ◽  
Deformation Analysis ◽  
Terrestrial Laser Scanner ◽  
Horizontal Deformation ◽  
Cloud Data ◽  
High Rise ◽  
Cloud Data Processing

The horizontal deformation analysis of high-rise buildings, quite often is complicated because buildings like chimneys, towers and etc, have complex and asymmetric shapes, consequently there is not always the possibility to apply the method of single points motion analysis. Furthermore, the horizontal deformation analysis is complicated using standard measurement methods like measurements with electronic total stations or optical theodolites. In such case the terrestrial laser scanner could be superior to traditional measurements. However, the terrestrial laser scanner still not widely used to survey building horizontal deformations using high precision measurements. The main aim of this work is to determine the suitability to measure deflections of buildings from the vertical using terrestrial laser scanners and to investigate point cloud data processing. Measurements of horizontal deformation were carried out using the over ground laser scanner and electronic total station. Horizontal deformations of chimneys of thermal power plants were investigated using corresponding methods. Deformation indicators and evaluated measurement accuracies between different methods were compared. Data analysis of terrestrial laser scanning is more complex, time consuming and requires sophisticated hardware resources in comparison with the traditional methods, however results are much more detailed and informative.

Design of Light-Small Mobile 3D Laser Measurement System

2013 ◽  
Vol 405-408 ◽  
pp. 3032-3036
Author(s):  
Yi Bo Sun ◽  
Xin Qi Zheng ◽  
Zong Ren Jia ◽  
Gang Ai
Keyword(s):  
Point Cloud ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Digital Camera ◽  
Scanning System ◽  
Point Cloud Data ◽  
3D Laser Scanning ◽  
Large Area ◽  
Cloud Data ◽  
Laser Scanning System

At present, most of the commercial 3D laser scanning measurement systems do work for a large area and a big scene, but few shows their advantage in the small area or small scene. In order to solve this shortage, we design a light-small mobile 3D laser scanning system, which integrates GPS, INS, laser scanner and digital camera and other sensors, to generate the Point Cloud data of the target through data filtering and fusion. This system can be mounted on airborne or terrestrial small mobile platform and enables to achieve the goal of getting Point Cloud data rapidly and reconstructing the real 3D model. Compared to the existing mobile 3D laser scanning system, the system we designed has high precision but lower cost, smaller hardware and more flexible.

scholarly journals The TLS technique as a way of identification and measurement of damaged elements of a historic sacral building

2019 ◽  
Vol 284 ◽  
pp. 08007
Author(s):  
Joanna A. Pawłowicz
Keyword(s):  
Laser Scanning ◽  
Laser Scanner ◽  
Terrestrial Laser Scanning ◽  
Technical Condition ◽  
Terrestrial Laser Scanner ◽  
Building Trade ◽  
Measurement Devices ◽  
Short Time ◽  
Cloud Of Points ◽  
Advanced Computer

3D terrestrial laser scanning (TLS) is a modern measurement technique which enables to obtain a large amount of data in short time. The gathered data is very detailed, thus the scope of its use is vast. Therefore scanners other measurement devices which results in considerable acceleration of stock-taking work. This approach enables to prepare a documentation of a building or to make an assessment of its technical condition using only a 3D cloud of points. Additionally, flexibility of data and advanced computer programmes make it possible to use such data in many sectors, not only in the building trade. The paper shows the issue of using a 3D terrestrial laser scanner ant the TLS (Terrestrial Laser Scanning) technique for identification and measurement of damaged elements on the example of a historical sacral building.

RESEARCH OF RELIABILITY AT THE DESIGN STAGE OF COMPLEX TECHNICAL SYSTEMS

2020 ◽  
pp. 1-20
Author(s):  
V. M. Trukhanov ◽  
S. S. Basova ◽  
G. V. Trukhanov ◽  
G. I. Kuprovskiy
Keyword(s):  
Mathematical Models ◽  
Present Article ◽  
Design Stage ◽  
Calculation Methods ◽  
Reliability Indices ◽  
Design Reliability ◽  
Complex Technical Systems ◽  
Technical Systems

The issues of nomenclature choice of reliability indices and methods of reliability distribution between components of product have been considered in the present article. Calculation methods of design reliability of expensive nondiscarding objects like movable mountings and also mathematical models of design reliability, which taking into account random and nonrandom failures. The technique of calculation and achievement of required level reliability has been represented.

scholarly journals Brief communication "Application of mobile laser scanning in snow cover profiling"

2011 ◽  
Vol 5 (1) ◽  
pp. 135-138 ◽  
Author(s):  
S. Kaasalainen ◽  
H. Kaartinen ◽  
A. Kukko ◽  
K. Anttila ◽  
A. Krooks
Keyword(s):  
Change Detection ◽  
Snow Cover ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Terrestrial Laser Scanner ◽  
Mobile Mapping ◽  
Preliminary Results ◽  
Geodetic Institute ◽  
Mapping System ◽  
Mobile Mapping System

Abstract. We present a snowmobile-based mobile mapping system and its first application to snow cover roughness and change detection measurement. The ROAMER mobile mapping system, constructed at the Finnish Geodetic Institute, consists of the positioning and navigating systems, a terrestrial laser scanner, and the carrying platform (a snowmobile sledge in this application). We demonstrate the applicability of the instrument to snow cover roughness profiling and change detection by presenting preliminary results from a mobile laser scanning (MLS) campaign. The results show the potential of MLS for fast and efficient snow profiling from large areas in a millimetre scale.

Research on Earthwork Calculating Methods Based on 3D Laser Scanning Technology

2012 ◽  
Vol 204-208 ◽  
pp. 618-621
Author(s):  
Bao Xing Zhou ◽  
Jian Ping Yue ◽  
Jin Li
Keyword(s):  
Point Cloud ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Accuracy Evaluation ◽  
Point Cloud Data ◽  
3D Laser Scanning ◽  
Cloud Data ◽  
Calculating Method ◽  
Validation Experiment ◽  
High Resolution Reconstruction

Terrestrial laser scanner (TLS) can provide the measurement of a large number of physical points distributed on the observed surface. A fast earthwork calculating method is proposed based on the redundant number of acquired points, which leads to a very accurate and high resolution reconstruction of the observed surfaces. This paper describes the three main steps of the method, namely the acquisition of the earthwork data based on TLS, the pre-processing of point cloud data, the earthwork calculation and accuracy evaluation based on point cloud data. Furthermore, it illustrates the performance of the proposed method with a validation experiment.

scholarly journals Remote sensing of Carpathian flysch landslides with the use of terrestrial laser scanner

2018 ◽  
Vol 66 ◽  
pp. 01019
Author(s):  
Janusz P. Kogut ◽  
Ievgen Tymoshenko
Keyword(s):  
Remote Sensing ◽  
Slope Stability ◽  
Laser Scanning ◽  
Failure Modes ◽  
Structural Model ◽  
Laser Scanner ◽  
Geological Structure ◽  
Terrestrial Laser Scanner ◽  
Element Analysis ◽  
Carpathian Flysch

Terrestrial laser scanning helps us to detect unstable subsurface behaviour, assessing the slope stability and potential landslide failure modes. If the slopes are regularly observed, the risk of slope movement and subsequent consequences may be considerably reduced. This allows for optimum land use conditions that are economically justified. Landslides in the Carpathian flysch have a peculiar susceptibility to activation due to the region’s geological structure. This work addresses the problem of monitoring and analysing the effects of landslides associated with the operation of routes (roads and railway lines) running through the slopes of the Carpathian flysch. The terrestrial laser scanner enables site remote sensing in a simple and automated manner. Regular measurements with multiple scanner positions may be used for long term slope monitoring. A detailed geological structural model allows for risk assessment with regards to failure modes, and it allows for a slope stability assessment. The model, along with the substrate parameters, introduced into the Finite Element Analysis package enables an analysis of the effects of landslide susceptibility and the displacements of the terrain surface in time, as well as due to different loading cases.

RESEARCH OF RELIABILITY AT THE DESIGN STAGE OF COMPLEX TECHNICAL SYSTEMS

2020 ◽  
pp. 1-16
Author(s):  
V. M. Trukhanov ◽  
S. S. Basova ◽  
G. V. Trukhanov ◽  
G. I. Kuprovskiy
Keyword(s):  
Mathematical Models ◽  
Present Article ◽  
Design Stage ◽  
Calculation Methods ◽  
Reliability Indices ◽  
Design Reliability ◽  
Complex Technical Systems ◽  
Technical Systems

The issues of nomenclature choice of reliability indices and methods of reliability distribution between components of product have been considered in the present article. Calculation methods of design reliability of expensive nondiscarding objects like movable mountings and also mathematical models of design reliability, which taking into account random and nonrandom failures. The technique of calculation and achievement of required level reliability has been represented.

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