Terrestrial Laser Scanning

How It Works and What It Does
Terrestrial laser scanners are contact-free measuring devices which can collect dense point-clouds of objects. After processing each point is assigned with X, Y, Z coordinates; colour and reflectance value. The relative precision, that is the ratio between absolute precision and measurement range, is better than 10-4. This technology is becoming increasingly important for surveying applications. The authors provide an overview of how the technology works, illustrated by examples from their own research activities. Lasers emit electromagnetic radiation, which is coherent and monochromatic. The emitted beams are highly directional, contain a lot of energy, bridge hundreds of metres and are reflected... (read more)
2010-12-03 02:41:52

Terrestrial Laser Scanning User Meeting

Optech is to organise its fifth International Terrestrial Laser Scanning User Meeting on 8th and 9th June 2010 in Prague, Czech Republic. Optech clients and expert users of static and mobile land-based scanning technologies will share their experiences and suggestions for best-practice implementation in an increasingly dynamic market. Presentation topics will include monitoring natural hazards and man-made structures, techniques for efficiently mapping large natural and urban landscapes, modeling inaccessible features, and analysing lidar data sets. "There has been a dramatic shift in surveying techniques in the past three years. This has been brought on by the introduction of cost-effective survey-grade... (read more)
2010-04-12 09:46:39

Airborne and Terrestrial Laser Scanning

Last month we reported back from the Intergeo trade show that it was all about three abbreviations: Airborne Laser Scanning (ALS), Terrestrial Laser Scanning (TLS) and Mobile Laser Scanning (MLS). This month a comprehensive text book, Airborne and Terrestrial Laser Scanning, appears from Whittles Publishing, aimed at students, researchers and practitioners. In just two decades all three scanning techniques have become well established survey techniques for acquiring (geo)spatial information. Yet publicly accessible knowledge about them has been broadly distributed over the literature. This concise book redresses the balance. Airborne and terrestrial laser scanning differ in terms of data capture mode,... (read more)
2009-12-29 11:50:58

Mobile Handheld Competes with Terrestrial Laser Scanning

The ZEB1 mobile handheld laser mapping system has been proven to be able to outperform traditional terrestrial laser scanning during field tests in Chile. Supplied by 3D Laser Mapping and operated by Chilean company GEOCOM, the ZEB1 was used to conduct a survey of a stockpile in a covered mining facility. The same area was scanned using a terrestrial laser scanner and the results were compared. Data capture with the ZEB1 was found to be around 5 times faster while automatic data processing, via 3D Laser Mapping’s secure server facility, took less than 5 minutes. Data accuracies and definitions were... (read more)
2014-04-09 09:06:27

Terrestrial Laser Scanning Used For Vegetation Analysis

A vegetation analysis survey using terrestrial laser scanning for Safe Trees Ltd in Jihlava, Czech Republic, has been completed. The focus of this survey was to evaluate the condition of trees using Lidar data. The collected data is used in the process of stress analysis: a requirement for determining the operational safety of trees during so-called pulling tests.    The stress analysis as accomplished by Blom Czech Republic and Control System International Ltd consists of stressing tested trees with small forces and determining the​​ trunk deformation (interpreted as resistance to breakage and torsion) and tilt of the root plate. The... (read more)
2011-10-03 09:57:46

Successful Terrestrial Laser Scanning User Meeting

Optech (Canada) has successfully concluded its International Terrestrial Laser Scanning User Meeting, held on 26 and 27 June 2012 at the Novotel Nice Centre in Nice, France. With registered attendees from around the world, the conference looked at emerging applications and fostered networking among users of Optech's Lynx Mobile Mapper and ILRIS Terrestrial Laser Scanner Lidar systems, ending on an extremely positive note. Julien Losseau, managing director of Optech in Europe said that the keynote speaker, James Kavanagh (director Land Group, The Royal Institution of Chartered Surveyors (RICS) in the UK) expressed the need to communicate the value of Lidar... (read more)
2012-07-06 12:00:00

Major Update of RIEGL’s Terrestrial Laser Scanning Software

RIEGL has released a major update to its terrestrial laser scanning software suite of RiSCAN PRO, RiMINING and RiSOLVE. The latest terrestrial laser scanning software suite update includes a number of key upgrades featuring the new RIEGL Point Cloud Database (RDB 2.0), which provides new and advanced point cloud capabilities. With this upgrade, it is now possible to visualise and manage massive files, hundreds of scans and billions of points simultaneously with a new level of detail. These new features enable massive point clouds to be visualised, with the added advantage of providing the user with the ability to instantly toggle between... (read more)
2016-01-29 09:24:51

Continuous Mobile Laser Scanning

Mobile Platform Terrestrial Lidar, IMU and GPS
Combining Terrestrial Laser Scanning, Position and Orientation Systems and GPS receivers into a mobile mapping system enables effective mapping of large and complex terrain. The authors tested a mobile mapping system at two sites: in an open pit mine, and along a road.<P> Optech and Sineco have been developing a mobile mapping system, initially based on a platform combining the ILRIS-3D (Intelligent Laser Ranging and Imaging System), the Applanix POS LV (land-based vehicle) and GPS receivers. This new system, ILRIS-MC (Motion Compensation), can be installed on any mobile platform and performs fast surveys, generating point-clouds in real time in WGS84... (read more)
2007-12-08 12:00:00

Mobile Laser Scanning Platform

RIEGL Laser Measurement Systems' V-Line laser scanner generation was a main feature in the overview of the company's laser scanner product range at Intergeo. The Austrian company was showing terrestrial, airborne, mobile and industrial applications.   The combination of the last year launched V-Line Laser Scanners with appropriate IMU/GPS equipment results in this year's RIEGL innovation: the Mobile Laser Scanning System RIEGL VMX-250.   This compact, rugged and lightweight mobile laser scanning system for highly accurate and high-resolution dynamic 3D data collection impresses with its extraordinary ease of use which convinced the visitors during the live presentation. The system consists... (read more)
2009-10-09 12:08:25

Laser Scanning and Archaeology

Standard Tool for 3D Documentation of Excavations
Terrestrial 3D laser scanning will become the future standard tool for high-resolution 3D documentation of archaeological excavations, but its capabilities are still underestimated by professional archaeologists and providers of scanners or scanning services. The new tool forces archaeologists to consider extension of archaeological stratigraphy theory. The author shows examples of the beneficial use of laser scanning and proposes an extended theory. Excavation forms the main data retrieval process in field archae­ology but is also destructive, based as is it upon salvaging in the reverse order of deposition or creation. Reconstruction of the site as it was is very important and... (read more)
2007-09-19 12:00:00
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