Bringing Colour to Point Clouds

Developments in Multispectral Lidar Are Changing the Way We See Point Clouds
Until now, most commercially available airborne Lidar systems have operated on one single wavelength, reflecting energy from a pulse which is then used for classification or visualisation. New developments have produced the first multispectral Lidar systems, which scan using laser pulses in a number of different wavelengths. Multispectral Lidar data contains valuable information about the objects scanned. The fast-moving advancements in this field are likely to represent the next technological leap in Lidar systems. (By Sam Fleming, Iain H. Woodhouse and Antoine Cottin) Lidar systems have fundamentally changed the world of mapping and surveying. Airborne systems can cover large areas... (read more)
2015-04-10 12:28:04

GIS in Archaeology

The Human/Environment Interface of Maya Settlements
Throughout history the physical and cultural environment has influenced location and distribution of settlements. One important question in archaeological research is what are the causal relationships between environmental factors on the one side and location and distribution of settlements on the other? The authors demonstrate GIS to be a powerful analytical tool in finding answers to this question as it relates to Maya settlement patterns in Central America. Clues to the relationships between environmental factors and location and distribution of settlements are preserved in many existing maps. Combining these maps with remote sensing data and non-spatial information from a variety... (read more)
2005-12-29 12:00:00

Making Sense of Endless Data Flow

GIM International Interviews Xavier Lopez
With a pretty well endless flow of spatial data out there, the possibilities for urban planning, security, map production and other applications are equally infinite. Xavier Lopez is director of product management at Oracle Spatial, a spatial-database management platform that supports all geospatial data types and models. As leader of the group's efforts to incorporate spatial and semantic technologies across Oracle's database technologies, Lopez shares with GIM International some of the latest developments in geospatial data management and provides some insight into what lies ahead for the sector. What are your responsibilities and what do you consider your successes?I've been... (read more)
2010-01-28 03:16:22

Use of GIS in Smart City Projects

Managing and Visualising Geospatial Data in a User-friendly Environment
The smart city concept is developing very quickly around the world, because it provides a comprehensive digital environment that improves the efficiency and security of urban systems and reinforces the involvement of citizens in urban development. This concept is based on the use of geospatial data concerning the urban built environment, the natural environment and urban services. The successful implementation of a smart city project requires the development of a digital system that can manage and visualise the geospatial data in a user-friendly environment. The geographic information system (GIS) offers advanced and user-friendly capabilities for smart city projects. This article... (read more)
2018-10-04 08:41:01

Geoinformation Software as a Service

From Licensing to Subscription
Accurate geoinformation about urban areas, public buildings or historical sites is in great demand. It has become astonishingly easy to capture these scenes through cameras or laser scanning or to acquire open data from a diversity of sources. Professionals without a surveying background can do the job, but such professionals require reliable, robust, easy-to-use and affordable processing tools. Today, cloud computing can meet that need, enabling users to work with software packages running on remote servers on either a pay-per-use or a subscription basis. This article presents a cloud computing service dedicated to geoinformation software. Storing data in the cloud... (read more)
2019-06-13 01:10:12

The Role of Surveyors in the Evolution of BIM

Building information modelling (BIM) is becoming more commonplace within construction sectors globally, combining technology with improved collaboration to better manage projects and give them the best chance of complying with time and budget constraints. However, the BIM life cycle and efforts to espouse it are almost futile if surveying is taken out of the equation or, more realistically, brought in too late. It can be good to have a structure that is successfully using BIM to be delivered on time and within budget, but if it or any of its components are in the wrong position, the consequences can be... (read more)
2019-10-02 10:25:44

Geomatics Developments in Asia

14th International Scientific and Technical Conference 'From Imagery to Map: Digital Photogrammetric Technologies'
The International Scientific and Technical Conference was held for the 14th time from 20-23 October 2014 in Hainan, China. This year’s conference, which was themed ‘From imagery to map: digital photogrammetric technologies’, was opened by Victor Adrov, managing director and co-founder of Racurs, Moscow, along with SmartSpatio from Beijing, China, as organiser of the event. One of the features of this event is the shift of venue every year; 2014 was its first time in Asia, and China was chosen because of its rising influence on the geomatics market. Prof Chen Jun, National Geomatics Center of China, not only addressed... (read more)
2014-12-23 11:35:28

Modern Geodesy: Formula 1 Geospatial

GIM International Interviews Chris Rizos
Chris Rizos, new president of the International Association of Geodesy (IAG), is advocating ‘modern geodesy' and a stronger, more visible role for the IAG. GIM International met Rizos in an early June Cape Town, where he was addressing a crowd of South African surveyors at AfricaGeo, just two weeks after starting his journey to one of the most northern countries of the continent, Marrakech, Morocco, to join the FIG Working Week.   How important is it for you to be in Africa? It's very important. Geodesy is much more a global enterprise than, for instance, photogrammetric or SDI activities. The... (read more)
2011-07-25 03:19:08

Lidar Quality Assurance

Open-source Software for Processing Lidar Point Clouds
Basic tools for processing Lidar point clouds, which can be extended depending on needs, provide a flexible platform for service providers and users alike. The companies Dielmo 3D, Spain, and Water Management, Australia, have demonstrated how a publicly available open-source application with basic tools for visualising, editing and analysing Lidar point clouds has been extended into a compliant platform that serves diverse applications including mapping of power-line corridors, land uses and riverbeds. By José Carlos Garcia and Rafael Torró (Spain), and David Hine (Australia) The platform, called DielmoOpenLiDAR and released under the GNU GPL licence, enables management and display of... (read more)
2015-06-01 11:39:59

Crowdsourcing the Reconstruction of Lost Heritage

Rekrei: Recreating the Past
Cultural heritage stands as an important testament to how we perceive the past. Unfortunately its preservation cannot always be assured, due to destruction by human or natural means. In February 2015, a video was released which showed the destruction of artefacts in the Cultural Museum of Mosul, Iraq. A volunteer initiative (initially called ‘Project Mosul’) was launched about a week later with the aim of using crowdsourced images and computer vision to create 3D representations of the destroyed artefacts. Project Mosul was initiated by two PhD students from the University of Murcia in Spain and the University of Stuttgart in... (read more)
2016-11-03 10:07:05
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