Propagation Modelling Accuracy

Mentum and Intermap Technologies, USA, have entered into a collaboration for the delivery of a new generation of height-attributed land-use geodata that addresses the propagation modelling needs of the wireless industry. The telecom-grade product, Cityscapes HD, offers an unmatched level of X, Y and Z accuracy at a price point that enables network operators to manage the large geographical areas required by today's wireless networks. Cityscapes HD is offered at a native resolution of 15m and is available immediately in the USA, Western Europe and parts of Asia.   Cityscapes HD accurately includes the height of vegetation and man-made structures... (read more)
2011-12-13 09:51:25

Modelling REDD Baselines

Clark Labs has recently published a Focus Paper on modeling REDD baselines with the Land Change Modeller application in their IDRISI GIS and Image Processing software. Reducing Emissions from Deforestation and Forest Degradation (REDD) is a climate change mitigation strategy for the protection and maintenance of forests that has gained momentum with conservation organisations, project developers and governments in developing countries. As forests play a major role in the sequestration of carbon, especially tropical forests, REDD offers great potential for reducing greenhouse gas emissions. Carbon offset payments, based on an assigned financial value for the likely carbon storage capacity of... (read more)
2010-07-02 10:05:14

Geospatial Analysis and Modelling

The development of GIS and carto-graphy can be characterised as information rich and knowledge poor. That is, the amount of geospatial information collected using geospatial technologies, including remote sensing, global positioning systems and digital mapping technology, has been growing rapidly, whereas geospatial knowledge or ‘useful information’, for decision making in terms of real-world problem solving is rather limited. Terabytes of geospatial information in the form of satellite imagery, aerial photos and maps have been integrated into Google Maps and Google Earth so that ordinary people using a decent internet-connected home computer can zoom from space right down to street level... (read more)
2006-11-20 12:00:00

Urban Energy Modelling

Semantic 3D City Data as Virtual and Augmented Reality
The visualisation of results from urban energy modelling and simulation is a crucial part of energy research as it is the main communication tool among scientists, engineers and decision-makers. Energy modelling and simulation results are directly linked to spatial objects and 3D therefore becomes a necessity. Multiple interactive 3D visualisation environments exist, such as Esri’s City Engine or CESIUM web globe. However, these applications are mainly targeted as 3D viewers for use on desktop machines and lack immersive components that enable users to truly immerse themselves, explore and interact with the real environment on-site. In this study, the team focused... (read more)
2017-11-23 10:24:29

Modelling Aids Brisbane Flood Crisis

AAM's 3D Flood Simulation of Brisbane, Australia, was used extensively by Australian and Global media during the recent flood crisis in Brisbane. The flood level simulations were produced interactively in 3D. This was a very effective way of communicating the impact of the flood on buildings and infrastructure and it provided a valuable tool in assessing the potential risk for the city in the days leading up to and during the flood peak.   The videos supplied residents, business owners and the public with realistic representations of the predicted flood event.   The flood simulation was based on accurate geospatial... (read more)
2011-01-18 09:14:34

Hurricane Devastation Mapping and Modelling

I-SiTE Studio software, a product of Maptek Pty (Australia), was recently used by a team of engineers and researchers sponsored by the US National Science Foundation to map structural and geotechnical damage to levees and waterways in New Orleans, caused by Hurricane Katrina in August 2005. Scanning was carried out on 10 different sites where levees had failed, and highly detailed 3D models were generated to assist with analysis and reconstruction. More than 180 scans were recorded over 5 days. The objective of the laser scanning was to obtain precise measurements of the ground surface to map soil displacements at... (read more)
2005-11-16 12:00:00

3D Modelling of Fez

A Model from Aerial/Terrestrial Imagery and Topographic Maps
The ancient imperial city of Fez, Morocco, is an important tourist attraction and has been listed as a UNESCO World Heritage Site since 1981. The layout of the city is complex, which presents challenges in terms of 3D modelling. Here, the authors discuss a pilot aimed at creating a 3D model of Fez using topographic maps and aerial and terrestrial imagery. Overlapping 1:4,000 aerial images were used to create a digital surface model (DSM) and orthoimages. Orthoimages and topographic maps were used to manually delineate the footprints of buildings, roads, rivers and suchlike. Terrestrial imagery of single buildings from multiple... (read more)
2015-03-31 09:34:33

UML in Use Case Modelling

Property Transactions in Slovenia
Modelling is a well-proven and widely accepted engineering technique for controlling complex reality. Unified Modeling Language (UML) is a general-purpose aid for graphical modelling. The author presents a use case driven approach for real-estate transaction in Slovenia. Short Introduction to UML By Mathias Lemmens, editor, GIM International When one wants to convert a process (dynamic system) taking place within a certain domain - such as registration of a transfer act in a land administration system - into a software system, one may approach the process from several directions. UML (Unified Modeling Language) has been developed to describe the different views... (read more)
2005-10-27 12:00:00

Reducing 3D Modelling Time

A new product in the AVEVA Plant portfolio is AVEVA Laser Modeller, a 3D laser scanning software solution that can reduce by up to 50% the time for intelligent 3D modelling of brownfield facilities. Over the past 12 months, key customers have played a role in the development and testing process of this new product. The application facilitates traditional costly techniques for converting laser scan data into an intelligent 3D model to become obsolete, according to Bruce Douglas, senior VP Marketing & Product Strategy of AVEVA. He continues saying that AVEVA Laser Modeller changes the fundamental ground rules by adding... (read more)
2012-04-16 01:55:59

Detailed 3D Facade Modelling

A new solution from GTA (Germany) and Procedural offers more 3D detail in modelling of large databases of real-world building data. Special focus is set to add depth to the facade, as well as roof details. CityEngine imports 3D buildings generated automatically using GTA’s software solution Tridicon 3D, transfers detailed tridiconTM3D façade description to CityEngine building parameters and generates rich and visually pleasing procedural 3D buildings.     In addition to its highly efficient modelling tools, there is GTA’s 3D database with more than 175 European cities and 5.400 km² real-world building data available. Highlights are the 3D city model... (read more)
2011-04-11 12:00:00
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