Searched for: collection%3Air
(1 - 14 of 14)
document
Vitalis, S. (author), Arroyo Ohori, G.A.K. (author), Stoter, J.E. (author)
3D city models are being increasingly adopted by organisations in order to serve application needs related to urban areas. In order to fulfil the different requirements of various applications, the concept of Level of Detail (LoD) has been incorporated in 3D city models specifications, such as CityGML. Therefore, datasets of different LoDs are...
conference paper 2018
document
Zhang, L. (author), Slob, E.C. (author)
We retrieve transmission compensated subsurface primary reflections from the reflection response measured at the surface. This is achieved by filtering the reflection response. The application of this scheme does not require model information. In this process, the reflection response is convolved and correlated with itself. The result after each...
conference paper 2018
document
Labetski, A. (author), Ledoux, H. (author), Stoter, J.E. (author)
The increasing popularity of 3D city models in navigation, urban planning, etc.,
necessitates application-specific and geometrically accurate and valid models. The concept of Levels of Detail (LoDs) indicate a model’s scale of adherence to its real-world counterpart. Highly detailed datasets often contain errors or require an exorbitant...
conference paper 2017
document
Slob, E.C. (author), Thorbecke, J.W. (author), Wapenaar, C.P.A. (author)
We present a scheme for Marchenko imaging in a dissipative heterogeneous medium. The scheme requires measured reflection and transmission data at two sides of the dissipative medium. The effectual medium is the same as the dissipative medium, but with negative dissipation. We show how the measured double-sided data can be combined to obtain the...
conference paper 2016
document
Kumar, A. (author), Blacquiere, G. (author), Verschuur, D.J. (author)
Recent advances in survey design have led to conventional common-midpoint-based analysis being replaced by the subsurface-based seismic acquisition analysis and design, with the emphasis on advance techniques of illumination analysis. Amongst them are wave-equation-based seismic illumination analyses such as the so-called focal beam method. The...
conference paper 2014
document
Xu, D. (author), Zlatanova, S. (author)
Database systems are continuously extending their capabilities to store, process and analyse 3D data. Topological relationships which describe the interaction of objects in space is one of the important spatial issues. However, spatial operators for 3D objects are still insufficient. In this paper we present the development of a new 3D...
conference paper 2013
document
Stoter, J.E. (author), Ledoux, H. (author), Meijers, B.M. (author), Arroyo Ohori, G.A.K. (author)
This paper presents the problem of the current separate treatment of levels of detail in city models. We propose a solution, detail the main principles, and present our initial results on the approach. We conclude with work in progress and explain the benefits of our approach.
conference paper 2012
document
Van Oosterom, P.J.M. (author), Stoter, J.E. (author), Ploeger, H.D. (author), Thompson, R.J. (author), Karki, S. (author)
In this paper, the background, set-up, and a preliminary analysis of the survey conducted by the FIG joint commission 3 and 7 working group on 3D-Cadastre, 2010-2014 is presented. The purpose of the survey is to make a world-wide inventory of the status of 3D-Cadastres at this moment (November 2010) and the plans/expectations for the near future...
conference paper 2011
document
Isikdag, U. (author), Zlatanova, S. (author)
The Ubiquitous Computing and the Internet-of-Things concepts are gathering more attention day-by-day. In the near future networks of interconnected sensors that are monitoring the environment around us will start to generate enormous amounts of data. This newly emerging paradigm can be named as „Sensors Everywhere”. This new paradigm will lead ...
conference paper 2011
document
Zlatanova, S. (author), Dilo, A. (author), De Vries, M.E. (author), Fichtinger, A. (author)
The first hours after a disaster happens are very chaotic and difficult but perhaps the most important for successfully fighting the consequences, saving human lives and reducing damages in private and public properties. Despite some advances, complete inventory of the information needed during the emergency response remains challenging. In the...
conference paper 2010
document
Verbree, E. (author), Stoter, J.E. (author), Zlatanova, S. (author), De Haan, G. (author), Reuvers, M. (author), Vosselman, G. (author), Goos, J. (author), Van Berlo, L. (author), Klooster, R. (author)
This paper presents the work in progress of a research project that aims at establishing a reference model for 3D geo-information in the Netherlands. The research project is initiated by four national organizations: 1) Ministry of Housing, Spatial Planning and the Environment, 2) Kadaster, 3) Geonovum, and 4) the Netherlands Geodetic Commission....
conference paper 2010
document
Van der Sande, C.J. (author)
Monitoring of tree objects is relevant in many current policy issues and relate to the quality of the public space, municipal urban green management, management fees for green areas or Kyoto protocol reporting and all have one thing in common: the need for an up to date tree database. This study, part of the Tree and Image research project,...
conference paper 2010
document
Heyndrickx, I. (author), Kaptein, R. (author)
A lot of current 3D displays suffer from the fact that their spatial resolution is lower compared to their 2D counterparts. One reason for this is that the multiple views needed to generate 3D are often spatially multiplexed. Besides this, imperfect separation of the left- and right-eye view leads to blurring or ghosting, and therefore to a...
conference paper 2009
document
Van der Sande, C.J. (author), Zanoni, M. (author), Gorte, B.G.H. (author)
Change detection with very high resolution imagery is difficult, because 3D objects as buildings appear differently in 2D imagery due to varying viewing angles and sun positions. This research proposes a method to improve change detection by using simple 3D models of buildings. Buildings have been modelled as flat roof or gable roof buildings....
conference paper 2008
Searched for: collection%3Air
(1 - 14 of 14)