Laserscanning and Modelling Industrial and Architectural Applications (original) (raw)
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3D Laser Scaning for Surveying Aplication
2013
3D Laser Scanning, also known as terrestrial LIDAR, has been commercially available for several years, providing a detailed, reliable, and accurate solution to many surveying and measurement problems, and has become well adopted for plant and facilities applications where accurate three-dimensional detail of complex facilities is critical for efficient design and construction projects. Terrestrial laser scanners deliver a dense point-wise sampling of an object’s surface. For many applications a surface-like reconstruction is required. The most typical example is the visualization of the scanned data. In many respects, laser scanning follows the same general surveying process as other instruments: data is collected in the field, adjusted to the appropriate coordinate system, and relevant features can be extracted to produce deliverables ranging from topographic maps, coordinate values, 2D or 3D CAD drawings etc. This paper describes typical scanning project from field-to-finish, incl...
LASER SCANNER AND ARCHITECTURAL ACCURACY TEXT
a Politecnico di Milano, DIIAR, IT [aadami@iuav.it] b Università IUAV di Venezia, CIRCE, IT[guerra2@iuav.it] c Politecnico di Milano, DIIAR, IT [vernier@iuav.it] Commission VI, WG VI/4
Potential perspectives of 3D laser scanner for real-life domains
Proceedings - 4th International Conference Business Meets Technology 2022
The 3D laser scanning technology called the accurate scene reproduction technology can support the 3D design of all kinds of tested objectives in the favorable data. It simplifies the construction project cost and improves work efficiency, but the results of its data evaluation are more reliable and comprehensive. During the last half of the 20th century, 3D laser scanning was developed to recreate the surfaces of various objects and places accurately. Technology is beneficial in the fields of research and design. The 3D laser scanner has been applied in some industries to represent its immeasurable value. In this paper, these cases used in cultural heritage, sculptures, engineering applications are more than representative to show a variety of laser scanner applications. The data processed in the follow-up are used in mapping, finite element analysis, simulation analysis, virtual reality, and other aspects.
Laser scanner technology for complex surveying structures
Wseas Transactions on Signal Processing, 2011
Generally, when someone refers to architectural property he inclines to consider only that part of architecture and monuments belonging at remote epochs far since our days. However authors' opinion is that the diffusion and the spreading of the culture cannot leave out from the analysis, the study and the conservation also of architecture and all things realized in more recent times. However, the characteristics of the modern and contemporary architecture with respect to those precedents lead to the development of a definition for new approaches and adequate representation forms because of the presence both of materials and innovative technologies like the tubular or trellis structures, that show then different difficulty in the interpretation and definition of the acquired data. In such direction, the new digital technologies allow, from a part, a rationalization and rapidity of the relief operations, from the other they allow to create some new representations which can easily fit to the scholars and operators (architects, engineers, restorers, historians, etc) demands, or to be used to produce faithful copies through quick prototype techniques, but also, more simply, to give back enjoyable such information easily by town councils or web users. The developed and described, in this article, experiences have the aim of verify the potentialities of laser scanner in surveying of structures, for whom traditional techniques of relief could result disadvantageous in terms of realization's times, costs and precision. A particular attention has addressed to elaboration phase, data filtering and 3D modeling through the use of specific and opportune algorithms of best-fitting, useful for individualization and extraction of forms.
Fast and accurate close range 3D modelling by laser scanning system
… REMOTE SENSING AND …, 2002
Completeness, speed, accuracy are some aspects of the laser scanning system for the acquisition of complex structures and sites. Complete geometry of exposed surface is remotely captured in minutes in the form of dense, accurate "3D point clouds", ready for immediate use. This technique is used for architecture, virtual reality, heritage preservation and some other engineering and civil applications. Laser scanning technology offers many advantages over traditional surveying and photogrammetric methods: better quality results, improved safety during data capture, no interference with construction and operations activities, no time consuming, simplicity and easiness in learning. Furthermore in many cases, it can provide significant cost saving in both capturing surface geometry and in generating CAD models or otherwise using the gathered data. We applied the laser scanner Callidus Precision System to digitise the shape of the three-dimensional small temple inside the Mole Vanvitelliana in Ancona to build a 3D model. It is a complicated task, made harder by the unusually large size of the data sets. We processed the data by several TIN methods to obtain CAD meshes and realize an efficient 3D rendered virtual object close to the reality.
2004
In this paper the investigations of two projects using the terrestrial 3D laser scanning system "CYRAX 2500®" from Leica Geosystems are presented. The CYRAX 2500 is tested in 3D data acquisition and object modelling for industrial as-built documentation and for an architectural application. The major aspects of these investigations were the accuracy of point determination and object modelling, the degree of automation in data acquisition and object modelling, and consequently the overall efficiency of the laser scanning system and its related software tools. With the scanner the two objects were recorded threedimensionally as point clouds. The registration and modelling of the industrial facilities (pipelines of the company Boie in Lübeck, Germany) could be performed nearly automatically with the software Cyclone (version 4.0.2), which belongs to the scanning system. The modelling of the architectural object (Holstentor in Lübeck) had to be carried out mostly manually in combination with the CAD program AutoCAD. The two projects demonstrated that the Cyrax laser scanning system is especial suitable for detailed 3D recording and modelling of industrial facilities. Due to its measuring precision and its high point density, the Cyrax 2500 represents a good alternative and supplement to classic construction surveying and to photogrammetric data acquisition. The two projects described were performed in cooperation between the
Laserscanning for heritage documentation
2009
In recent years, 3D laser scanners have gained interest, especially in 3D reconstruction and reproduction, mainly because of their capability to record huge numbers of points with high accuracy in a relatively short period of time. Especially in the field of deformation monitoring for analyzing the structural stability of built heritage, laser scanners can provide a much denser and thus better representation of the deformations taking place over time. The single-point precision of modern mid-range laser scanners varies from 5 to 25mm depending on the laser and the measuring principle used, but also depending on the measurement conditions and the object surface to be scanned. Comparing this precision to that of traditional surveying techniques used for deformation monitoring such as total stations or contact sensors, the precision of a laser scanner is approximately 1 order lower in magnitude. The main disadvantage of these traditional techniques is that they only offer single-point ...
Using laser scanners for modeling and analysis in architecture, engineering, and construction
… Sciences and Systems …
Laser scanners are rapidly gaining acceptance as a tool for three dimensional (3D) modeling and analysis in the architecture, engineering, and construction (AEC) domain. Since 2001, our cross-disciplinary research team has been developing new methods for analyzing and modeling laser scanner data, with an emphasis on applications in the AEC domain. This paper provides an overview of our group's recent research efforts. Our work includes improving our understanding of the low-level aspects of laser scanner data, using comparison methods to analyze laser scanner data and derived models, and developing modeling and recognition algorithms to support the automatic creation of building models from laser scan data.
Characterization and calibration of multiple 2D laser scanners
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This paper presents the comparative evaluation of multiple compact and lightweight 2D laser scanners for their possible backpack based scanning and mapping applications. These scanners include Hokuyo URG-04LX, Slamtec RPLidar A1-M8 and Hokuyo UTM-30LX-EW scanners. Since the technical datasheets provide general information and limited working details, this research presents a thorough study on the performance of each scanner related explicitly to indoor mapping operations. A series of scanning experiments have been performed for the characterization of each scanner using statistical analysis. During the testing, all the scanning data has been recorded using Robot Operating System (ROS) and then computed in offline processing. In initial tests, each scanner’s drift effect on range measurements has been tested and presented in the relevant section of the paper. In continuation, the effect of various scanning distances on measurement accuracy has been evaluated and discussed. Later the ...