Abstract. In this paper, we present a way of how to handle incomplete knowledge concerning moving... more Abstract. In this paper, we present a way of how to handle incomplete knowledge concerning moving objects. Our approach is based on the basic Qualitative Trajectory Calculus (QTCB), which is a calculus for handling interactions between moving point objects (MPO’s). Without elaborating on the domain of linguistics, we show that QTC well-fitted to represent spatiotemporal natural language. Illustrative examples on how to deal with incomplete knowledge are presented.
... telijke gegevens [1][2]. Een uitgebreide lijst van definities omtrent GIS wordt onder andere ... more ... telijke gegevens [1][2]. Een uitgebreide lijst van definities omtrent GIS wordt onder andere gegeven door Maguire [6]. Daarin worden de verschillende de-finities van GIS geklasseerd al naar ge-lang de nadruk ... De struc-tuur van dit project wordt uitgelegd in onderstaande figuur ...
... Nico Van de Weghe [801001472437] - Ghent University Nico.VandeWeghe@UGent.be; MarijkeBrondeel... more ... Nico Van de Weghe [801001472437] - Ghent University Nico.VandeWeghe@UGent.be; MarijkeBrondeel [801000962579] - Ghent University. Title, Concepten van temporeel GIS toegepast op tweehonderd jaar kadastrale kaarten. Publication Status, published. ...
... 281 (S8), B-9000 Gent Tel ++32 (9) 264 46 96 Fax ++32 (9) 264 49 85 E-mail: Wouter.Vanneuvill... more ... 281 (S8), B-9000 Gent Tel ++32 (9) 264 46 96 Fax ++32 (9) 264 49 85 E-mail: Wouter.Vanneuville @ugent ... bekken hebben voorgedaan; - mogelijkheid tot het kwantificeren van het effect van ingrepen, zowel op het gebied van rivierkundige maatregelen (dijken, baggeren, …) als ...
... Record Details. Record ID, 436484. Record Type, conference. Author, P BOGAERT; Ruben Maddens ... more ... Record Details. Record ID, 436484. Record Type, conference. Author, P BOGAERT; Ruben Maddens [801001756161] - Ghent University Ruben.Maddens@UGent.be; Matthias Delafontaine [802000077838] - Ghent University Matthias.Delafontaine@UGent.be; ...
Not sure of the Publishers copyright policy to archiving your journal articles online? Use these ... more Not sure of the Publishers copyright policy to archiving your journal articles online? Use these sites to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement. ... GIScience International Workshop “Moving Objects: From Natural to Formal Language, Salt Lake City, Utah, US, September 31 2008. ... There are no files associated with this item. ... Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
ABSTRACT: Future Remote Sensing data will include hyperspectral data more and more. This study fr... more ABSTRACT: Future Remote Sensing data will include hyperspectral data more and more. This study frames in the preliminary studies to investigate the possibilities of these types of data. In this framework experimen-tal flights were organised by VITO (Flemish Institute for ...
ABSTRACT: Through the joint effort of UNESCO, OSTC Belgium, Geography Dept, Ghent University and ... more ABSTRACT: Through the joint effort of UNESCO, OSTC Belgium, Geography Dept, Ghent University and SURFACES Laboratory of Geomatics Dept, Liege University, a demo project to conserve five World Heri-tage sites was launched. For this project an internet site was created. This ...
Applications of Digital Image Processing XXXV, 2012
ABSTRACT A mobile mapping system (MMS) is the answer of the geoinformation community to the expon... more ABSTRACT A mobile mapping system (MMS) is the answer of the geoinformation community to the exponentially growing demand for various geospatial data with increasingly higher accuracies and captured by multiple sensors. As the mobile mapping technology is pushed to explore its use for various applications on water, rail, or road, the need emerges to have an external sensor calibration procedure which is portable, fast and easy to perform. This way, sensors can be mounted and demounted depending on the application requirements without the need for time consuming calibration procedures. A new methodology is presented to provide a high quality external calibration of cameras which is automatic, robust and fool proof.The MMS uses an Applanix POSLV420, which is a tightly coupled GPS/INS positioning system. The cameras used are Point Grey color video cameras synchronized with the GPS/INS system. The method uses a portable, standard ranging pole which needs to be positioned on a known ground control point. For calibration a well studied absolute orientation problem needs to be solved. Here, a mutual information based image registration technique is studied for automatic alignment of the ranging pole. Finally, a few benchmarking tests are done under various lighting conditions which proves the methodology's robustness, by showing high absolute stereo measurement accuracies of a few centimeters.
... Record Details. Record ID, 436498. Record Type, conference. Author, P BOGAERT; Nico Van de We... more ... Record Details. Record ID, 436498. Record Type, conference. Author, P BOGAERT; Nico Van de Weghe [801001472437] - Ghent University Nico.VandeWeghe@UGent.be; MatthiasDelafontaine [802000077838] - Ghent University Matthias.Delafontaine@UGent.be; ...
Abstract. In this paper, we present a way of how to handle incomplete knowledge concerning moving... more Abstract. In this paper, we present a way of how to handle incomplete knowledge concerning moving objects. Our approach is based on the basic Qualitative Trajectory Calculus (QTCB), which is a calculus for handling interactions between moving point objects (MPO’s). Without elaborating on the domain of linguistics, we show that QTC well-fitted to represent spatiotemporal natural language. Illustrative examples on how to deal with incomplete knowledge are presented.
... telijke gegevens [1][2]. Een uitgebreide lijst van definities omtrent GIS wordt onder andere ... more ... telijke gegevens [1][2]. Een uitgebreide lijst van definities omtrent GIS wordt onder andere gegeven door Maguire [6]. Daarin worden de verschillende de-finities van GIS geklasseerd al naar ge-lang de nadruk ... De struc-tuur van dit project wordt uitgelegd in onderstaande figuur ...
... Nico Van de Weghe [801001472437] - Ghent University Nico.VandeWeghe@UGent.be; MarijkeBrondeel... more ... Nico Van de Weghe [801001472437] - Ghent University Nico.VandeWeghe@UGent.be; MarijkeBrondeel [801000962579] - Ghent University. Title, Concepten van temporeel GIS toegepast op tweehonderd jaar kadastrale kaarten. Publication Status, published. ...
... 281 (S8), B-9000 Gent Tel ++32 (9) 264 46 96 Fax ++32 (9) 264 49 85 E-mail: Wouter.Vanneuvill... more ... 281 (S8), B-9000 Gent Tel ++32 (9) 264 46 96 Fax ++32 (9) 264 49 85 E-mail: Wouter.Vanneuville @ugent ... bekken hebben voorgedaan; - mogelijkheid tot het kwantificeren van het effect van ingrepen, zowel op het gebied van rivierkundige maatregelen (dijken, baggeren, …) als ...
... Record Details. Record ID, 436484. Record Type, conference. Author, P BOGAERT; Ruben Maddens ... more ... Record Details. Record ID, 436484. Record Type, conference. Author, P BOGAERT; Ruben Maddens [801001756161] - Ghent University Ruben.Maddens@UGent.be; Matthias Delafontaine [802000077838] - Ghent University Matthias.Delafontaine@UGent.be; ...
Not sure of the Publishers copyright policy to archiving your journal articles online? Use these ... more Not sure of the Publishers copyright policy to archiving your journal articles online? Use these sites to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement. ... GIScience International Workshop “Moving Objects: From Natural to Formal Language, Salt Lake City, Utah, US, September 31 2008. ... There are no files associated with this item. ... Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
ABSTRACT: Future Remote Sensing data will include hyperspectral data more and more. This study fr... more ABSTRACT: Future Remote Sensing data will include hyperspectral data more and more. This study frames in the preliminary studies to investigate the possibilities of these types of data. In this framework experimen-tal flights were organised by VITO (Flemish Institute for ...
ABSTRACT: Through the joint effort of UNESCO, OSTC Belgium, Geography Dept, Ghent University and ... more ABSTRACT: Through the joint effort of UNESCO, OSTC Belgium, Geography Dept, Ghent University and SURFACES Laboratory of Geomatics Dept, Liege University, a demo project to conserve five World Heri-tage sites was launched. For this project an internet site was created. This ...
Applications of Digital Image Processing XXXV, 2012
ABSTRACT A mobile mapping system (MMS) is the answer of the geoinformation community to the expon... more ABSTRACT A mobile mapping system (MMS) is the answer of the geoinformation community to the exponentially growing demand for various geospatial data with increasingly higher accuracies and captured by multiple sensors. As the mobile mapping technology is pushed to explore its use for various applications on water, rail, or road, the need emerges to have an external sensor calibration procedure which is portable, fast and easy to perform. This way, sensors can be mounted and demounted depending on the application requirements without the need for time consuming calibration procedures. A new methodology is presented to provide a high quality external calibration of cameras which is automatic, robust and fool proof.The MMS uses an Applanix POSLV420, which is a tightly coupled GPS/INS positioning system. The cameras used are Point Grey color video cameras synchronized with the GPS/INS system. The method uses a portable, standard ranging pole which needs to be positioned on a known ground control point. For calibration a well studied absolute orientation problem needs to be solved. Here, a mutual information based image registration technique is studied for automatic alignment of the ranging pole. Finally, a few benchmarking tests are done under various lighting conditions which proves the methodology's robustness, by showing high absolute stereo measurement accuracies of a few centimeters.
... Record Details. Record ID, 436498. Record Type, conference. Author, P BOGAERT; Nico Van de We... more ... Record Details. Record ID, 436498. Record Type, conference. Author, P BOGAERT; Nico Van de Weghe [801001472437] - Ghent University Nico.VandeWeghe@UGent.be; MatthiasDelafontaine [802000077838] - Ghent University Matthias.Delafontaine@UGent.be; ...
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