Precise Thinking and Innovation

NovAtel Inc
Founded in 1983, NovAtel was originally a telecommunications company and since Initial Public Offering in 1997 has been a public company (NASDAQ: NGPS) entirely focused on GNSS and precise-positioning technology. Based in Calgary, Alberta, Canada, it currently employs 250 people. An ISO 9001-certified company, we develop Original Equipment Manufacturer (OEM) products including receivers, antennas, enclosures and software for integration into high-precision positioning applications worldwide. These include surveying, GIS mapping, precision-agriculture machine guidance, port automation, mining and marine industries. Our reference receivers are also at the core of national aviation ground networks in the US, Japan, Europe, China and India. Our... (read more)
2007-04-17 12:00:00

Beyond Cadastre 2014

Let the Dialogue Begin
Multipurpose cadastres, Cadastre 2014, and sustainable land administration have radically altered understanding of cadastres and their potential over the last thirty years. Many of these concepts continue to be relevant. However, the world is not in stasis, so cadastral science must anticipate and facilitate emerging change. The authors present six design elements relating to the role and nature of future cadastres as a starting point for further dialogue. Globalised society will affect the design of future cadastres. Firstly, will be a need for survey-accurate cadastral data; secondly, a shift in focus from land parcels to property objects. Third will be... (read more)
2010-06-28 01:33:15

Riparian Buffer Evaluation

Remote sensing for Environmental Protection at CFB Gagetown
Years of environmental neglect and deforestation on CFB Gagetown have unfortunately caused sedimentation in the more than 2,400km of streams on the base. In an effort to control this and maintain environmental sustainability, vegetation reforestation is needed to create ‘riparian buffers’. These are vegetated areas, usually forested, near a stream, which help shade and protect it from the impact of adjacent land use. The size of the area makes it important to optimise the reforestation process by identifying those areas requiring most attention. This project was initiated to find a way of identifying these critical riparian buffers using aerial imagery... (read more)
2009-09-01 12:00:00

Object-based Image Analysis

Beyond the Squares
Looking at a satellite image one sees squares (i.e. pixels) representing landscape, although the actual shapes of roads, rivers, lakes, forest and nature reserve might more accurately be represented by lines, circles or irregularly shaped polygons. Over recent years earth observation has become an important data source, while image interpretation has been limited to squares the features of which are spectral variables: colours and invisible radiance determined by reflection-absorption behaviour of landscape objects as observed by satellite sensors. As we view an image our eyes register its spectral characteristics (colour) and shape, the location of an object and its relationship... (read more)
2010-01-28 02:27:00

Virtual Time-Space of Kyoto

Towards Building Social Consensus Using GIS
The post-war construction of tall, modern buildings in Kyoto has generated heated debate on issues such as what kind of landscape is most beneficial for the city and how can economic progress and environmental protection go hand in hand. The author shows how the use of GIS and Virtual Reality makes it easier to communicate to stakeholders proposed changes to landscape than by 2D-maps alone. Such 4D-GIS are becoming an essential tool in building social consensus. The present-day Kyoto cityscape is characterised by medium to tall high-rise buildings of the post-war era, such as the Kyoto Tower, Kyoto Hotel and,... (read more)
2006-03-27 12:00:00

Medium-format Cameras for High-accuracy Mapping

Field Test of the Phase One iXU-RS1000 Camera
Small and medium-format cameras are increasingly gaining popularity for mapping small and medium-size areas, corridors, construction sites and cities. They are also used as companions of Lidar systems, mounted on unmanned aerial systems (UASs), and for monitoring and inspecting infrastructure. The author of this article investigated the suitability of the Phase One iXU-RS1000 camera for high-accuracy mapping and found this medium-format camera to be a metric camera with stable and clearly definable interior orientation parameters, producing images of high geometric and radiometric quality. In photogrammetry it is important that cameras produce images of which the geometric distortions are as small... (read more)
2018-01-17 10:09:48

Disaster Management in Agriculture

GIM Interviews Members of the Iberian American Geomatics Network
The many natural disasters taking place annually all over the world are often caused by weather phenomena and one of the most affected fields is agriculture. Remote sensing, GPS, GIS and ICT appear to be effective tools in countering disaster, and this has been the main driving force behind establishing the UTEEDA network in six countries in Iberian America. The First Co-ordination Meeting took place in Toluca, Mexico in February 2006 and we interviewed three initiators of the network: Dr Damaso R Ponvert–Delisles from Cuba, D. Jesus Soria Ruiz of Mexico and Dr Alejandro Leon Stewart from Chile. Please explain... (read more)
2007-01-01 12:00:00

UAS and Flooding

Monitoring Flooding and Assessing Damage in the Czech Republic
Heavy rainfall in late May and early June 2013 caused the Elbe, Vltava and Kamenice rivers to burst their banks in the Czech Republic. Among other areas, the Troja area of Prague and the villages of Hrensko and Nové Kopisty were severely flooded. Here, the author describes the experiences gained by the Czech company Geodis while using UAS technology to monitor and assess the impact of floods for the first time. Having proved that it can provide geodata quickly, cheaply and efficiently, UAS is now attracting significant interest from authorities. Figure 1, MD4-1000 from microdrones. Geodis is the producer of... (read more)
2013-12-02 10:53:49

Technology in Focus: Dense Image Matching

Point clouds are increasingly a prime data source for 3D information. For many years, Lidar systems have been the main way to create point clouds. More recently, advances in the field of computer vision have allowed for the generation of detailed and reliable point clouds from images – not only from traditional aerial photographs but also from uncalibrated photos from consumer-grade cameras. Read on to learn more about dense image matching, the powerful technology underpinning this development. Understanding photogrammetry A good understanding of dense image matching requires insight into the way photogrammetry works. Photogrammetry in itself is not a new technology;... (read more)
2016-03-03 10:55:18

Sokkia European Headquarters

A Unique Baseline in the Lowlands
Twenty-five years ago, in 1982, the Japanese Sokkisha Company founded its European headquarters in the Netherlands, first in Weesp and then in Almere, a city erected on land reclaimed from the sea. Marketing, warehousing, distribution, service and training for the European market are all done here. But most remarkable is the presence of a baseline for testing EDMs, 2,300 metres long and free of any obstruction - and that in a country as densely populated as the Netherlands. Reasons enough for a visit.<P> The Dutch have never enjoyed an abundance of natural resources beneath their feet. In the late fifties... (read more)
2008-03-06 12:00:00
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