Surveying in the Mining Sector

An Overview of Geospatial Methods in Mining Engineering
What is the current status of surveying in the mining industry, and which survey equipment and technologies are being used today? Geospatial data forms the foundation of mining. The rapidly evolving innovations in the geomatics sector are bringing previously unforeseen opportunities that will provide a major boost, both to mining surveyors and the mining industry as a whole. Read on for an article which starts with some history – after all, we should never forget where we came from. It then goes on to present a general outline of surveying in the mining industry, with a focus on the survey... (read more)
2017-02-01 08:46:34

China Leaps Ahead with Geospatial Research

GIM International Interviews Professor Dr ZHANG Jixian
Prof. Dr John van Genderen, himself a leading western expert on geospatial developments in China, interviews Professor Dr ZHANG Jixian, acting president of the Chinese Academy of Surveying and Mapping on the rapid evolution of geospatial ideas in China. Could you provide a brief overview of China’s earth observation missions, from their start up until now? China initiated a plan to develop a self-owned, proprietary (in terms of intellectual property rights) earth observation system after DFH-1, the first Chinese satellite, in 1970. Since then, many earth observation missions have been launched. As of today, we have developed five series of... (read more)
2005-03-24 12:00:00

Digital Aerial Cameras

New Developments
The growing need for geo-data everywhere is driving customers to demand shorter turnaround rates and higher levels of detail. These needs can be met by aerial imagery directly captured in digital format onboard an aircraft. In tandem with the new product survey on Digital Aerial Cameras (see our website), the author here gives an overview of new developments. In my overview published in GIM International April 2008, I categorised the various digital aerial cameras under linear- and area-array solutions: one of many possible groupings for these systems. Another, based on technological criteria, considers dimension (size, weight and number of pixels... (read more)
2011-03-28 04:13:34

The Relevance of Aerial Mapping in 2019 and Beyond

Modern Mapping Systems and Techniques
Reality 3D models, Lidar points clouds, superhigh-resolution aerial imagery and artificial intelligence from aerial imagery… these are just a few of the products derived from aerial mapping that the GIS sector takes for granted in 2019. Despite the plethora of high-resolution Earth observation satellites and the exponentially increasing impact of unmanned aerial vehicles (UAVs or 'drones') on the aerial mapping sector, most large and medium-scale ‘topographic’ or GIS map data is still derived from manned aircraft, whether fixed-wing or rotary. But the multitude of systems and processes can make selecting the correct aerial mapping technology a complicated and confusing process.... (read more)
2019-04-12 11:38:08

Remotely Sensed Data for Efficient Data Collection

Taking a Closer Look at Impact from Hundreds of Kilometers above the Earth
When it comes to impact evaluations, remotely sensed data can increase their timeliness, accuracy and relevance for decision-makers. 3ie and New Light Technologies are enhancing the use of geospatial analysis in IEs. Impact evaluations (IEs) have been evolving to fill a critical gap in evidence about the effectiveness of international development programmes and interventions. Because of their ability to determine intervention effectiveness (and cost-effectiveness), the demand for and production of IEs has grown substantially in recent decades. Rigorous evaluation of development interventions and their outcomes has been a perennial challenge across multiple sectors and disciplines. Remotely sensed data allows to... (read more)
2020-07-17 02:25:39

State of the Art in 3D City Modelling

Six Challenges Facing 3D Data as a Platform
Semantically enriched 3D city models have the potential to be powerful hubs of integrated information for computer-based urban spatial analysis. This article presents the state of the art in 3D city modelling in the context of broader developments such as smart cities and digital twins, and outlines six challenges that must be overcome before 3D data as a platform becomes a reality. (This article is a co-production of seven authors, all of whom are mentioned at the end of the text.) 3D city models, as digital representations of urban areas, can be used to facilitate many applications, such as urban... (read more)
2020-04-09 10:46:22

Laser Scanning Technology Challenged

Shortcomings in Spatial Documentation of Heritage Sites
In this month’s Insider’s View Prof. Heinz Rüther puts some critical points on the shortcomings of laser-scanning technology in the spatial documentation of heritage sites. We invited manufacturers of laser-scanning sensors and software to comment on his challenging observations. Nearly 70% of the companies responded (ten in total) and seven felt qualified to reply: Optech, Riegl, Leica Geosystems, 3rd Tech, Visual Learning Systems, TopoSys and I-SiTE 3D Laser Imaging. We thank all respondents for their time and effort. Critical observations made by Prof. Heinz Rüther include the following. (1) The processing time of laser-scan data can be up to ten... (read more)
2007-02-23 12:00:00

Growing Geospatial Capabilities All over the World

Interview with Peter Hedlund, Ordnance Survey International
Ordnance Survey International (OSI) is a subsidiary of Ordnance Survey (OS), responsible for sharing the British mapping agency’s expertise and tradecraft with countries across the globe. In 2016, the international branch appointed Peter Hedlund as its new managing director. Back then, Hedlund stated that location data often reveals the simplest answers to many of our world’s most complex questions. In this interview, he zooms in on the geospatial services his organisation provides all over the world. What attracted you to join OS? And how does your past experience help you in this position? Ordnance Survey (OS) is well-known and respected... (read more)
2017-12-12 10:44:50

Game-based Crowdsourcing for Image Analysis

A Novel Approach to Increasing Analysis and Mapping Capacity
Complex image analysis is a task at which humans are still far better than computers. While computers can conduct simple analysis, they are not yet effective at reliable feature identification and classification, such as to identify where illegal logging is occurring for example. A huge amount of spatial imagery is available nowadays, both of the Earth and other planets, but – in view of the large number of possibilities and the sheer volume of data – there are not enough experts to analyse it all. A novel approach has now been developed that can increase image analysis and mapping capacity founded... (read more)
2016-06-14 09:37:17

An Operational High-resolution Forest Inventory

Combining State-of-the-art Remote Sensing with Computer Analytics
Forestry operations currently rely heavily on forest inventories that employ field plot data as a basis for estimating forest attributes. This labour-intensive approach provides limited information and has become a costly bottleneck in completing operations. Remote sensing can be used to obtain more accurate and comprehensive forest inventories with less effort. This article discusses high-resolution forest inventory services (HRISs) which combine state-of-the-art remote sensing technologies and computer analytics to produce operational forest inventories that help to improve the efficiency of various forest management activities. As a global economic activity, forest wood production is highly variable, ranging from single species plantations... (read more)
2017-10-30 11:34:43
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