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
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
2018-11-15 03:22:40

TDOT : Drone LiDAR system

TDOT : Drone LiDAR system (read more)
2020-03-24 08:41:57

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 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

Kansas Lidar Elevation Survey

AeroMetric, USA, has been awarded a contract to provide the State of Kansas with Lidar elevation data covering 9,720 square miles in the eastern part of the State. This is an area including 11 counties, the Missouri river and Kansas City.   Funded by state and county agencies, this project is a key component of the Kansas Geographic Information System Partnership initiative which aims at developing a robust geospatial infrastructure to enhance the safety, economy, environment and quality of life in Kansas.   This project augments AeroMetric's extensive state mapping experience, which includes major recent projects in Alaska, Minnesota, North... (read more)
2012-02-15 09:56:47

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 Use in Haiti

A new last minute addition to the International Lidar Mapping Forum conference program will include two presentations on how Lidar is being used in Haiti to assess the damage from the recent earthquake and the future probability of subsequent earthquakes. Imagery of the region damaged by the M7 Haiti earthquake, including high-resolution photography and airborne Lidar, has revealed a variety of ground failure that resulted from shaking. Surprisingly, the Enriquillo Fault seems to have not ruptured at the ground surface, so the negative result obtained from imagery has significant implications. The USGS issued a statement, based on imagery analysis, that... (read more)
2010-02-11 03:12:02
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