Lidar

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

Airborne Lidar

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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

Finnish National Lidar Survey

Blom has been awarded a contract to provide Lidar data for the National Land Survey of Finland (NLSF). The total contract value is approximately NOK34 million over a period of four years. The contract is expected to be signed in January 2010, with start-up of the project at the beginning of second quarter of 2010. NLSF is responsible for production and maintenance of geographic- and real estate information in Finland. The purpose of the project is to create a new and accurate national height model covering an area of app. 120 000 sq.km.The dataset will also provide valuable information for... (read more)

2009-12-18 03:04:04

Lidar Map of Nigeria

The Enugu State has awarded a contract to a South African company to conduct aerial surveys of the state which is situated in the Eastern part of Nigeria. The creation of an accurate Geographical Information System or GIS is crucial to many government programs. The purpose of the survey is to provide the local municipality with accurate maps and surveys to be used for planning, development and infrastructure maintenance. Southern Mapping Company will be partnering with The Digital Map Company (DMCo) in Nigeria and share their knowledge, resources and expertise. SMC will be delivering a set of digital... (read more)

2009-07-06 10:34:59

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-based Survey Solutions

Optech Incorporated

Optech Incorporated focuses on the development, manufacture and support of advanced, lidar-based survey solutions. Established in 1974 as a privately held, Canadian-owned research and development firm, Optech was originally an offshoot of research into light detection and ranging ('laser radar') conducted by its founder, Dr Allan Carswell, at York University in Toronto. In the 1980s Optech airborne lidar systems produced the world's first nautical charts based on airborne lidar data. In the early 1990s, ground-based Differential Absorption Lidar (DIAL) systems were installed at several Arctic sites to monitor stratospheric ozone. At the same time, the company developed the compact, versatile... (read more)

2005-03-21 12:00:00

Lidar Quality Assurance

Open-source Software for Processing Lidar Point Clouds

Basic tools for processing Lidar point clouds, which can be extended depending on needs, provide a flexible platform for service providers and users alike. The companies Dielmo 3D, Spain, and Water Management, Australia, have demonstrated how a publicly available open-source application with basic tools for visualising, editing and analysing Lidar point clouds has been extended into a compliant platform that serves diverse applications including mapping of power-line corridors, land uses and riverbeds. By José Carlos Garcia and Rafael Torró (Spain), and David Hine (Australia) The platform, called DielmoOpenLiDAR and released under the GNU GPL licence, enables management and display of... (read more)

2015-06-01 11:39:59

International LiDAR Mapping Forum

International LiDAR Mapping Forum (ILMF) is a technical conference and exhibition showcasing the latest airborne, terrestrial, and underwater LiDAR as well as emerging remote-sensing and data collection tools and technologies. With a special emphasis on data acquisition, fusion, integration, processing and visualization, ILMF is the must-attend event for professionals involved in utility asset management, transportation, urban modeling, coastal zone mapping, and more. (read more)

2018-01-04 12:14:44

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