Web GIS Improves Lidar Collection Response Time

The LMAP Initiative
The remarkable capabilities of airborne Lidar continue to improve, with scanners now able to emit more than a million pulses every second. Although it has never been easier to acquire high-quality laser data, storing and managing the huge volume of Lidar data collected can prove to be a challenge. Combined with associated metadata such as survey information, environmental conditions and flight lines, data management has now become a critical priority and focus. This article outlines a new initiative called LMAP that provides an automated workflow for uploading and storing Lidar and metadata into GIS. Developed in a partnership between RIEGL of... (read more)
2018-11-06 11:07:08

On-the-fly Decision Support in Flood Management

Combining Methods for Fast Simulation and 3D Visualisation
In flood and storm water management, simulation is widely used for flood risk assessment, for designing mitigation measures and for sustainable urban planning. In this context, live sessions are an effective tool for collaboration between domain experts and decision-makers to discuss and develop new ideas. This article presents an integrated flood simulation and visualization system that is able to provide answers to the questions of experts and stakeholders on the fly. It supports fast incorporation of new parameters through visual interfaces, immediate provision of simulation results, derivation and analysis of key indicators, and 3D visualizations that even non-experts can understand.... (read more)
2018-11-07 09:00:37

Object-based Classification of Point Clouds

Augmenting 3D Geometry with Semantic Information
Today, the analysis of 3D point clouds acquired with topographic Lidar or photogrammetric systems has become an operational task for mapping and monitoring of infrastructure and environmental processes. Numerous applications require the identification and delineation of landscape objects and their properties. So far, many software solutions have been focused on the analysis of constructed and man-made objects, which are characterized by a regular and well-defined geometry (e.g. buildings, roads and other infrastructure). In comparison, the detection and analysis of natural landscape objects is challenging, since object boundaries might be fuzzy and the object characteristics within one class can be very... (read more)
2018-11-22 11:03:56

UAS Lidar for Ecological Restoration of Wetlands

How New Technologies Are Helping to Preserve the Environment
Wetlands are essential ecosystems which provide numerous benefits to society as a whole. But their functionality strongly depends on the hydrology and topography of the watershed, thus creating the need for monitoring. The use of terrestrial topographical survey methods can be a challenging task in wetlands, however. Flooded areas, muddy terrain and low vegetation can substantially slow down or even prevent the movement of surveyors, while tall vegetation can obstruct GPS reception. As this article outlines, advanced technologies such as airborne or UAS Lidar offer interesting alternatives for surveying the hydrology and topography of wetlands. Wetlands are ecosystems where water... (read more)
2019-03-26 10:24:42

Simultaneous Capturing of Lidar and Imagery

How Major Cities May Benefit from a Hybrid Sensor System
People continue to migrate from rural areas to major cities, driving sustained urban growth and increasing the demand for accurate, detailed and up-to-date 3D city models. The creation of such models is still a cumbersome endeavour but new advancements, such as the combination of three sensor types – nadir camera, oblique cameras and a Lidar unit – in one and the same geodata acquisition system, may bring relief. Aerial surveys conducted in major cities in the UK and Ireland demonstrate the potential of this solution. Cities will continue to grow as long as the world’s population keeps flocking to urban... (read more)
2020-02-05 01:33:28

Mobile Mapping Trends and Insights

Data Analysis by Geomares
Mobile mapping technology is on the rise worldwide. Industry specialist Geomares – publisher of 'GIM International' among other things – has analysed the user data and behaviour of thousands of members of the global geospatial community. This article presents the findings from that analysis, identifying the latest trends and sharing insights into the future outlook for mobile mapping. Recent advances in mobile mapping technology are enabling new capabilities and complementing – or even replacing – traditional survey methods of topographical surveying. Futhermore, widespread investment in city planning and ‘smart city’ projects is expected to further accelerate the adoption of mobile... (read more)
2018-07-05 01:59:36

Protecting Location Privacy Brings Opportunities to the Geosector

Since members of the geosector are well versed in potential applications of geoinformation and its fusion with other data sources, they are best equipped to devise and test technology-based solutions for location privacy-related challenges. That is the opinion of Dara Seidl, a young expert on geoprivacy, who won the first pan-American master’s thesis contest on geoinformation. (By Frédérique Coumans, contributing editor) Dara Seidl was selected by a jury of worldwide experts as the winner of the ‘Prize for the Outstanding Master’s Thesis in Cartography, Geodesy and Geo-Information 2015’ for her thesis titled ‘Striking the Balance: Privacy and Spatial Pattern Preservation... (read more)
2017-01-17 09:23:46

Underscoring Benefits to Humanity

GIM International interviews Orhan Altan
Professor Orhan Altan, recently appointed president of the ISPRS, the international NGO representing more than a hundred nations and regions across the globe, believes the organisation should prioritise environmental monitoring and sustainable development and so contribute to achieving the Millennium Development Goals. International co-operation, says Altan, for advancement of knowledge, research, development and education in this field, would be boosted by greater publicity for ISPRS scientific achievements and successes and their translation into universally understood language. We asked him about his expectations and dreams as head of one of the most important bodies in the geomatics industry, and the legacy... (read more)
2009-02-27 12:00:00

Multispectral and Thermal Sensors on UAVs

Capabilities for Precision Farming and Heat Mapping
Mini and micro unmanned aerial vehicles (UAVs) in combination with cost-efficient and lightweight RGB cameras have become a standard tool for photogrammetric tasks. In contrast, multispectral and thermal sensors were until recently too heavy and bulky for small UAV platforms, even though their potential was demonstrated almost a decade ago. Nowadays, however, lightweight multispectral and thermal sensors on small UAVs are commercially available. Read more about their capabilities for use in precision farming and heat mapping. (By Stephan Nebiker and Natalie Lack, Switzerland) The multispectral cameras and thermal infrared (TIR) sensor in the authors’ performance tests were mounted on an eBee... (read more)
2016-08-02 09:21:38

Wildlife Management Using Airborne Lidar

Finding Murrelet Habitat
The traditional sampling protocol for quantifying potential nesting habitat for murrelet requires an observer to peer up through the tree crown from the forest floor, a task resulting in data of dubious quality. Two-dimensional features of the canopy surface can be quantified using satellite imagery, but the three-dimensional attributes of the inaccessible middle strata of the canopy are the most critical to understanding and mapping the habitat. The development of Lidar as a tool for quantifying forest structure offers great promise of new solutions to existing habitat measurement problems and opens up a new realm of possibilities for exploring wildlife-habitat... (read more)
2016-12-07 10:26:47
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