The Tough Road from 2D Maps to 3D City Models

GIM International Interviews Dr Filip Biljecki
The demand for mapping intensively used parts of the Earth, including roads and cities, is steadily growing. This is because today’s rate of urbanisation requires detailed and up-to-date geodata in its full three dimensions. Such datasets help city managers to prevent a decline in liveability, to limit water, air and noise pollution, and to improve fair taxation and rapid emergency response. Crucial is the abstraction of the 3D real world, a concept known as level of detail (LoD). Since 2012 Dr Filip Biljecki has been investigating how to improve the level of detail (LoD) in 3D city models. For his... (read more)
2017-07-06 09:45:13

Boundary Dimensions as Basis

Managing a Cadastral SDI Framework
Cadastral information is a fundamental layer in the Spatial Data Infrastructure (SDI) and many GIS systems use it as a base framework. The authors introduce an approach to improve and maintain the spatial accuracy of cadastral boundary geometry that can concurrently improve the geometry of referenced layers. A multi-purpose cadastre is the goal of most countries today and, in many, ‘metes and bounds’ define boundaries. This system evolved during a period when it was relatively easy to measure lines but very difficult to find the exact coordinate location of a point on the earth's surface. Boundary dimensions and reference to... (read more)
2005-08-24 12:00:00

Singapore: Towards a Smart Nation

Underpinned by a 3D National Map
Since the inception of its Smart Nation programme in 2014, Singapore has emerged as a world leader in smart city initiatives. One of the centrepieces of Singapore’s strategy has been the development of a highly accurate, 3D digital map of the country to support key functions such as urban planning, flood control and civil aviation. The creation of this national 3D map has involved the use, adoption and development of world-leading surveying, mapping and GIS technologies. Read on for an article explaining the various challenges in creating and maintaining the required data, and how it will be used to its... (read more)
2017-05-11 09:04:08

Intergeo Preview 2009

Intergeo, the world’s largest congress and trade-fair for geodesy, geoinformation and land management, will this year be held in Karlsruhe, Germany, from 22nd to 24th September. About 16,000 visitors are expected to visit the event, and five hundred exhibitors will be showcasing their latest innovations in a hall area of 25,000m2. This preview aims to give a foretaste of the latest products and technologies to be presented at Intergeo. We invited exhibitors to introduce themselves and their offerings and many responded, resulting in this compilation. Impression of Intergeo 2009 - see Intergeo 2009 Photo Album   3D Laser Mapping 3D Laser Mapping... (read more)
2009-09-17 01:29:20

Intergeo Preview 2011 (2)

Everyone who truly matters in the geomatics and surveying-related business will be travelling to Germany ¨C or more precisely to the Bavarian city of Nuremberg ¨C in the last week of September this year: Intergeo 2011 is being held in the Nuremberg exhibition centre (N¨¹rnbergMesse) from 27th to 29th September. The organisers are expecting some 17,500 visitors from more than 80 countries around the world to attend the trade show, while the associated conference is likely to welcome over 1,500 visitors ¨C and you will probably be among them! (Continued from Part 1 A - Joseph Attenberger)    Juniper Systems... (read more)
2011-09-21 04:24:30

Intergeo Preview 2010

Intergeo, the world's largest congress and trade-fair for geodesy, geoinformation and land management, will this year be held in Cologne, Germany, from 5th to 7th October. About 15,000 visitors are expected to visit the event, and close to five hundred exhibitors will be showcasing their latest innovations in the Kölnmesse, the convention center of the city on the Rhine River. This preview aims to give you a foretaste of the latest products and technologies to be presented at Intergeo. We invited exhibitors to introduce themselves and their offerings, and many responded, resulting in this compilation. 3d Laser Mapping 3D Laser... (read more)
2010-09-29 02:07:09

Towards Cadastre 2034

International Experts Speak Out
To what degree have the objectives of Cadastre 2014 been accomplished? What are the societal and technological dynamics that may affect the international practice of land administration over the coming twenty years? Bennett and co-authors from the University of Melbourne, Australia, have described six design elements relating to the role and nature of future cadastres, presented at the FIG 2010 congress in Sydney and published in GIM International (July 2010); an inspiring starting point for further dialogue. To encourage discussion we invited leading experts and practitioners to send us their own views and vision. We received no fewer than ten... (read more)
2010-09-07 04:38:43

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

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

The Revolution of Drone-carried Sensors

GIM International interviews 3D Robotics
The world of professional unmanned aerial vehicles (UAVs or ‘drones’) is changing. It is a matter of ‘survival of the fittest’ in terms of the hardware aspect: UAV manufacturers. The interest is now visibly shifting towards payloads and software to capture, visualise and process the data; UAVs are the apparatus, but it’s the sensors and software that really count. GIM International decided to touch base with a company that serves as a good example of the current transformation, and spoke to Chris Anderson, CEO, and Daniel McKinnon, vice president, from 3D Robotics. Read the interview here. (By Wim van Wegen,... (read more)
2017-03-31 09:00:12
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