Positioning Becoming a Commodity

GIM International Interviews Ewout Korpershoek, Director Marketing & Sales, Topcon Europe
"Welcome to the future!" This was how Topcon greeted Intergeo visitors to their stand. It was impossible to overlook. So what is so special about that future? And how is Topcon preparing for it? An alumnus from Delft University of Technology, Ewout Korpershoek in July this year became Director Marketing & Sales, Topcon Europe Positioning BV. Freshly in post, he gives an inspiring view on a surveying world in continual flux and a survey market broadening by the day. Welcome to the future! With this catch phrase you invite Intergeo participants to Topcon City, the capital of Intergeo. What is... (read more)
2005-11-21 12:00:00

Automatic Tie-point Extraction

Novel Matching Method for Handling Non-standard Imagery
One of the most complex and time-consuming tasks in the photogrammetric workflow is the extraction of corresponding points in two or more overlapping images. This is the first stage of aerial triangulation and block adjustment aimed at computing the positions of the projection centre and the orientation of each image. Automating the extraction of these so-called ‘tie points’ can be challenging, especially when non-standard approaches such as cameras mounted on UAVs or oblique imagery are used. The authors present a novel matching method able to handle the most challenging imagery. The aim of matching is to identify corresponding points in... (read more)
2012-04-25 04:16:35

Strong Emphasis on R&D in Lidar

GIM Interviews Dr Allan Carswell, Optech Incorporated
Since its 1974 ‘spin-off’ from the Physics Department of York University in Toronto, Optech has grown to become a world leader in the development, manufacture and sale of advanced laser-based instruments and products incorporating pulsed, time-of-flight laser radar (Lidar) systems. Strong emphasis on R&D has led to these being applied in a wide range of applications. The company has received awards for business excellence, innovation, R&D and university collaboration. How big is your company in terms of number of employees and market share, who are your main clients and how is your customer-base distributed over the continents? With over two... (read more)
2006-08-23 12:00:00

Mapping Urban Fringes

Object Based Image Analysis: a Promising Technique
What is the potential of object-based image analysis (OBIA) for creating land-cover maps from high-resolution satellite images of urban fringes, and can the accuracy of OBIA be compared to visual interpretation? The authors demonstrate that classification of objects rather than individual pixels provides a fast, efficient and simple semi-automatic method for generating land-cover maps. Overall accuracy is equivalent to visual interpretation. Suburban fringe areas are characterised by intermingling of vegetation and structural elements. They are also subject to rapid changes in land-cover. Sustainable development of such heterogeneous, complex and dynamic landscapes requires constant monitoring based on proper decision making and... (read more)
2010-06-07 03:20:20

Positioning Becoming a Commodity

GIM International Interviews Ewout Korpershoek, Director Marketing & Sales, Topcon Europe
"Welcome to the future!" This was how Topcon greeted Intergeo visitors to their stand. It was impossible to overlook. So what is so special about that future? And how is Topcon preparing for it? An alumnus from Delft University of Technology, Ewout Korpershoek in July this year became Director Marketing & Sales, Topcon Europe Positioning BV. Freshly in post, he gives an inspiring view on a surveying world in continual flux and a survey market broadening by the day. Welcome to the future! With this catch phrase you invite Intergeo participants to Topcon City, the capital of Intergeo. What is... (read more)
2005-11-21 12:00:00

What is Geomatics?

[email protected] provides Some answers
As the only educational institution offering a BSc (Hons) course in Geomatics (Surveying and Mapping) in the whole of the Republic of Ireland, the Dublin Institute of Technology (DIT) has noted a severe lack of awareness of what Geomatics encompasses both as a discipline and as a potential career. New marketing initiatives, including the use of an animated video on social networking sites, aim to ensure the survival of the course by informing potential Geomatics students about both the profession in general and the specific opportunities at DIT.   The Department of Spatial Information Sciences (DSIS) at the Dublin Institute... (read more)
2011-09-21 03:12:06

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

Dense Image Matching

Point clouds are increasingly a prime data source for 3D information. For many years, Lidar systems have been the primary 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. Dense image matching is the powerful technology underpinning this development. (By Martin Kodde) Understanding photogrammetry A good understanding of dense image matching requires insight into the way photogrammetry works. Photogrammetry in itself is not a new technology; it... (read more)
2016-07-15 06:10:43
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