This issue of GIM is largely devoted to emergent Lidar technology. We have a feature on 3D-visualisation of Lidar data co-authored by new contributing editor Dr Bharat Lohani of IIT Kanpur India, and no fewer than two product surveys, one on Airborne Lidar Systems, the other on Lidar software. Two regular features, Technology in Focus and Company’s View, this month address processing the product of Lidar survey, point-clouds. Lidar is without doubt a most successful data-acquisition technique. As an acronym of Light Detection and Ranging - some prefer to read Lidar as Laser Imaging Detection And Ranging - the term... (read more)
2007-01-19 12:00:00
2017-01-05 08:56:47

LiDAR Compressor

LizardTech has released the LizardTech LiDAR Compressor. This product enables users to turn giant point cloud data into efficient MrSID files that retain 100% of the raw data at just 25% of the file size.     Unlike raw LAS or ASCII data, LiDAR files compressed to MrSID are easily managed resources from which derivatives can be extracted over and over again. One of the key features of LiDAR Compressor is its ability to reduce LiDAR file sizes by 75% while retaining all of the points and all of the point precision and accuracy of the original file. If users... (read more)
2009-07-14 09:49:29

European Lidar Mapping Forum

Intelligent Exhibitions is organising the second edition of the European Lidar Mapping Forum. The venue will be Salzburg, Austria and is to take place from 29th to 30th November 2011. The Call for Papers has also been released with the conference committee requesting abstracts in the following areas: Data Acquisition - Airborne and Terrestrial Lidar and Bathymetric, Data Fusion & Processing Technologies, Developments in GIS & Data modelling, Industry Issues, Mobile Mapping & Survey and details on recent projects. The deadline for submission is 25th July 2011.   This event focuses on airborne, bathymetric, and terrestrial Lidar and mobile mapping... (read more)
2011-06-23 04:49:09

Lidar and Sound Modelling

Improving Existing Propagation Models
Simulation of sound propagation is key for today’s urbanised society, in which sound is omnipresent and often negatively affects people’s lives. Existing methods of sound-propagation modelling fail to capture the complexity of terrain. Airborne Lidar in conjunction with aerial photos is able to fill this gap. The authors propose a programme of research to find out how high-resolution terrain data might improve the efficiency of sound models. Sound propagation is affected by obstructing objects such as buildings and trees, and influenced by the relative location of sound source and receiver, type of intermediate ground and meteorological conditions. Computation of sound... (read more)
2007-08-11 12:00:00

Lidar Technology in India

Dominant Trend at MapWorld Forum 2007
Lidar technology emerged as the dominant trend at Map World Forum 2007, attracting keen interest among stakeholders. While Lidar and aerial photo capture may be enjoying a large and increasing international market, in India no company has been forthcoming with investment for fear of burning its fingers; government policy on aerial data collection has been unclear. However, it seems all lights are now turning green for a private sector eager to conduct aerial survey here. Lidar was allotted a full afternoon at MapWorld Forum 2007, while all major Lidar-sensor manufacturers exhibited products and several Lidar-service companies participated. There were no... (read more)
2007-04-17 12:00:00

International Lidar Projects

LiDAR Services International (LSI, Canada) has announced the start up of two international Lidar projects one in Costa Rica and the other in the Dominican Republic. The project in Costa Rica is a large (+750 km) transmission line full thermal rating project for I.C.E. the government electrical utility company. LSI mobilised the HELIX-1 LiDAR system to San José Costa Rica for installation on a Bell helicopter operated by Air Costa Rica. Besides collecting Lidar data, high resolution downward digital imagery, forward video, and real time meteorological data will also be collected to support the range of deliverables required by the... (read more)
2008-01-16 10:27:01

Taiwanese Lidar Project

Getting Prepared for Flooding
Nearly three-quarters of the territory of Taiwan and 95% of its population are exposed to frequent natural hazard. In the aftermath of typhoon Morakot that scourged Southern Taiwan on 8th and 9th August 2009, causing the worst flooding in a century, the authorities realised that the country was dreadfully lacking in detailed, accurate and current elevation data, as well as aerial imagery covering the entire territory (36,000km2). In response, a national mapping programme spanning 2010 to 2015 was launched with the aim of simultaneously capturing the entire country by airborne Lidar and digital imagery. The authors discuss specifications, status and... (read more)
2011-07-25 04:07:49

Lidar Rectification Software

Optech has released the Optech LMS Lidar Mapping Suite for its Lynx Mobile Mapper clients. It offers Lynx clients a new workflow designed specifically for high-volume production processing, and incorporates a fully automated batch-mode capability.     Optech LMS enables simultaneous processing of multi-mission data collects, and includes multi-threaded and distributed processing capabilities to further increase processing efficiency.   According to Daina Morgan, Optech's Lynx Mobile Mapper product manager, Optech LMS Standard includes all the capabilities the clients are used to, with the added feature of comprehensive coordinate conversion. This facilitates a transition without the need of extensive retraining.   (read more)
2011-11-29 09:31:41

Lidar Forum Dates Set

Following on from the previous success of both the European Lidar Mapping Forum and the International Lidar Mapping Forum, the organisers have now set the dates for the next edition of both events. ELMF will be returning to Salzburg, Austria, from 4th to 5th December 2012, and ILMF will be returning to Denver, Colorado in the US from 11th to 13th February 2013. In 2011, when ELMF moved to Salzburg from The Hague in The Netherlands, the venue received so much positive feedback from visitors and exhibitors alike that the organisers are planning to return there for a second year.... (read more)
2012-03-09 09:55:29
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