Laser Scanning

Both overview and detail are necessary during all phases of disaster management: preparedness, prevention, emergency response, recovery, mitigation and damage assessment; and both can be simultaneously provided by earth observation (EO) from air or space. Three main EO technologies can be used: optical imaging, radar and laser scanning, the latter two being active techniques emitting energy from the sensor and detecting the backscatter. Optical imagery requires sunlight, and is most often used. Since the information is similar that perceived by the human eye, its interpretation is not restricted to GI masters. Geocoded imagery and orthophoto maps can also be automatically... (read more)
2008-04-11 12:00:00
2009-08-12 09:59:32

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

Laser Scanning Software

Z+F UK develop their own brand of laser scanning software called 'Light Form Modeller' or LFM. LFM is known for its array of CAD interfaces that allow users to seamlessly integrate laser scan data into their preferred CAD or review package.     LFM is part of the Bentley and Autodesk developer Networks. It can interface with Microstation, AutoPlant, AutoCAD, CADWorx and also VR Context's Walkinside product. It is also above to interface with CAD packages for the Process market e.g. Intergraphs PDS, SmartPlant Review, SmartPlant 3D and AVEVA's PDMS and Review packages. In relation to colour laser scan data... (read more)
2009-05-28 03:13:25

Laser Scanning Data Processor

The latest version of Pointools Edit utilises the full power of 64-bit for faster editing and processing of point cloud data, the millions of 3D measurements collected by laser scanning devices. The application builds on the features of View Pro visualisation software, with point cloud layer-based editing and segmentation. Pointools Edit also enables simple RGB re-colouring together with easy noise and obstruction cleaning. Pointools Edit features point layer technology for flexibility and speed when editing point cloud data. Layers can be used to segment, clean and re-colour the huge data files created by laser scanning instruments. Colour errors can also... (read more)
2010-05-20 02:24:15

Making Laser Scanning Simple

FARO Technologies, headquartered in Lake Mary, USA, is specialised in 3D measurement, imaging and realisation technology. The company develops and markets computer-aided measurement and imaging devices and software. The technology permits high-precision 3D measurement, imaging and comparison of parts and complex structures within production and quality assurance processes. The devices are also used for documenting large volume spaces or structures in 3D. FARO had its start in a friendship between two self-proclaimed ‘techno-junkies’ who were working on their PhDs in biomedical engineering at McGill University in Montreal, Canada. Simon Raab and Greg Fraser founded Res-Tech on 21 February 1981, and... (read more)
2014-04-30 10:36:07

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

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

Laser-scanning and Heritage

Academic and Manufacturer Face Challenges
The March issue of GIM International carried the response of manufacturers of laser-scanning sensors and software to remarks made in the Insider’s View column on shortcomings of this technology in the spatial documentation of heritage sites. Based on his long-term experience in capturing heritage sites in Africa, Professor Rüther explains there is still ample room for development, a challenge for both academic and manufacturer. Judging from the responses to my original column, it appears some manufacturers interpreted my observations as rejection of laser scanning as a tool for heritage documentation. The opposite is true. Without doubt, laser scanning has high... (read more)
2007-04-17 12:00:00

Portable Laser Scanning System

3D Laser Mapping (UK) has developed a portable laser scanning system for mapping overhead infrastructure such as power lines. With adverse weather and over-grown vegetation increasingly causing damage to overhead cables, the system can be carried as a backpack to instantly map the position of cables and the proximity of nearby vegetation. 3D Laser Mapping developed the portable system following major power outages in Europe. Using mobile laser technology, the system links to specially developed software that automatically identifies areas of risk so that utilities can prioritise their maintenance activities. The system is highly portable; mounted on an off road... (read more)
2007-01-09 03:09:02
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