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

Airborne Lidar in Rainforest

Towards a UAV-based System for Measuring Canopy Height

At the experimental forest site Paracou in French Guiana, a range of data is being collected to enable the short-term dynamics within the tropical rainforest canopy to be better understood and quantified. Airborne laser scanning (ALS) was used to obtain high spatial resolution data of the 3D canopy structure. The data has been utilised to build a canopy height model and provides valuable information about the foliage density. The sensing system can also be mounted on an unmanned aerial vehicle (UAV). The French Guianian project demonstrates proof of concept for the further application of this technique. By Sam Fleming, Prof... (read more)

2014-09-01 11:42:29

Lidar-driven Innovation

The first laser was built in 1960 by Maiman, two years after Miller and LaFlamme introduced the digital terrain model (DTM) in the context of civil engineering purposes in 1958. Probably, none of them thought that by around 1995 this would solve a geomatics problem that had existed since the arrival of aerial photogrammetry: capturing terrain elevation in wooded areas. While that also required precise navigation based on GNSS and inertial systems, it was the multi-target capability of pulsed Lidar the showed unprecedented detail below the canopy. This technique has also revolutionised other fields in industry, administration and science, such... (read more)

2016-07-11 09:26:40

DragonEye Lidar System

DragonEye is AHAB\'s new Airborne Topographic LIDAR system. By offering a pulse repetition frequency of above 300 kHz, real time digital signal processing of waveform, multiple pulses in the air, and unlimited number of range captures per pulse, DragonEye represents the next generation Airborne LIDAR systems. In addition the small size and low power consumption assures easy integration in various platforms. The system mainly consists of two collecting chains; one laser range finder for land (topographic) and a camera collecting images. The laser range finders emits pulses and measure the time distance from output pulse to return pulse in... (read more)

2008-09-30 12:30:42

Lidar Treatment Software Releases

Tiltan is to present the automatic Lidar processing product TLID - and the 3D Modelling Sensor and System AGM during Intergeo 2010. TLiD is an automatic solution for point cloud data processing Lidar data and other, low noise, point clouds are handled. The package automatically transforms geo-referenced point clouds into GIS layers and 3D Photo-realistic dynamic presentation. The company will be represented at the Diamond booth (1F-142). (read more)

2010-09-20 04:42:35

Lidar Flight Planning

A System with Minimal User Intervention

Airborne Lidar has become a regular technology for acquiring accurate, consistent and dense point clouds. However, the constraints on specifications, available sensors and aerial platforms are still a challenge for Lidar data acquisition. Optimal flight planning is essential. Current practices rely on rules of thumb and trial and error, meaning that optimal solutions are rare. The authors have developed a Lidar flight planning system which does provide an optimal solution at a high level of automation and requiring minimal user intervention. Once acquired, Lidar data should satisfy the specifications on density, overlap, spatial distribution and accuracy. Data clusters and voids... (read more)

2014-02-17 10:39:05

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 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