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Toute l'information touristique sur le bassin d'Arcachon / Françoise de Blomac in SIG la lettre, n° 94 (février 2008)
[article]
Titre : Toute l'information touristique sur le bassin d'Arcachon Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2008 Article en page(s) : pp 2 - 3 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] Arcachon (bassin d')
[Termes IGN] cadastre numérique
[Termes IGN] données géocodées
[Termes IGN] interface web
[Termes IGN] intranet
[Termes IGN] système d'information géographique
[Termes IGN] tourismeRésumé : (Auteur) Le syndicat Intercommunal du Bassin d'Arcachon (SIBA) regroupe les 10 communes situées autour du célèbre plan d'eau. Compétent dans plusieurs domaines (assainissement, urbanisme, santé et hygiène...), il est équipé d'un SIG depuis 2001. Pour mettre toutes sortes d'informations des offices du tourisme, il a complété son SIG avec une application Intranet développée sous Aigle de Ciril. Copyright SIG La Lettre Numéro de notice : A2008-056 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29051
in SIG la lettre > n° 94 (février 2008) . - pp 2 - 3[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 286-08021 RAB Revue Centre de documentation En réserve L003 Disponible WinBasin: using improved algorithms and the GIS technique for automated watershed modelling analysis from digital elevation models / W. Lin in International journal of geographical information science IJGIS, vol 22 n° 1-2 (february 2008)
[article]
Titre : WinBasin: using improved algorithms and the GIS technique for automated watershed modelling analysis from digital elevation models Type de document : Article/Communication Auteurs : W. Lin, Auteur ; W. Chou, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 47 - 69 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse spatiale
[Termes IGN] bassin hydrographique
[Termes IGN] données vectorielles
[Termes IGN] géomorphologie locale
[Termes IGN] ligne de partage des eaux
[Termes IGN] modèle numérique de surface
[Termes IGN] système d'information géographiqueRésumé : (Auteur) WinBasin is a GIS-based watershed analysis system that can automatically calculate depressionless flow directions, delineate watersheds/sub-watersheds, extract realistic drainage networks, and calculate geomorphological indices and hydrological responses from digital elevation models. Several improved algorithms coupled with GIS techniques were proposed for automated watershed analysis. First, different from depression fill-up treatment methods, the depression watershed method coupled with the improved fuzzy c-mean algorithm allows the depression outlet location and flow directions to be determined. Second, by using the GIS-based point-and-click interface coupled with outlet-tracing and headwater-tracing algorithms, watersheds with user-specified outlets and realistic drainage networks can be easily extracted based on the derived flow directions. The analysed results can be exported to vector format for linkage with other GIS software. Third, the geomorphological indices and hydrological responses (width function and geomorphological instantaneous unit hydrograph) in a watershed can also be instantly derived based on the proposed algorithms and the GIS technique. Copyright Taylor & Francis Numéro de notice : A2008-104 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701300121 En ligne : https://doi.org/10.1080/13658810701300121 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29099
in International journal of geographical information science IJGIS > vol 22 n° 1-2 (february 2008) . - pp 47 - 69[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08011 RAB Revue Centre de documentation En réserve L003 Disponible 079-08012 RAB Revue Centre de documentation En réserve L003 Disponible Spatially and temporally continuous LAI data sets based on an integrated filtering method: examples from North America / H. Fang in Remote sensing of environment, vol 112 n° 1 (15/01/2008)
[article]
Titre : Spatially and temporally continuous LAI data sets based on an integrated filtering method: examples from North America Type de document : Article/Communication Auteurs : H. Fang, Auteur ; Shunlin Liang, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 75 - 93 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] algorithme de filtrage
[Termes IGN] Amérique du nord
[Termes IGN] analyse comparative
[Termes IGN] analyse diachronique
[Termes IGN] données spatiotemporelles
[Termes IGN] image Landsat-ETM+
[Termes IGN] image Terra-MODIS
[Termes IGN] Leaf Area Index
[Termes IGN] qualité des donnéesRésumé : (Auteur) Leaf Area Index (LAI) is an important biophysical variable for characterizing the land surface vegetation. Global LAI product has been routinely produced from the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellite platforms. However, the MODIS standard LAI product is not continuous both spatially and temporally. To fill the gaps and improve the quality, we have developed a data filtering algorithm. This filter, called the temporal spatial filter (TSF), integrates both spatial and temporal characteristics for different plant functional types. The spatial gaps are first filled with the multi-year averages of the same day. If the values are missing over all years, the pixel is filled with a new estimate using the vegetation continuous field–ecosystem curve fitting method. The TSF integrates both the multi-seasonal average trend (background) and the seasonal observation. We implement this algorithm using the MODIS Collection 4 LAI product over North America. Comparison of the TSF results with the Savitzky–Golay filter indicates that the TSF performs much better in restoring the spatial and temporal distribution of seasonal LAI trends. The new LAI product has been validated by comparing with field measurements and the derived LAI maps from ETM+ data at a broadleaf forest site and an agricultural site. The validation results indicate that the new LAI product agrees better with both the field measurements and LAI values obtained from the ETM+ than does the MODIS LAI standard product, which usually shows higher LAI values. Copyright Elsevier Numéro de notice : A2008-026 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2006.07.026 En ligne : https://doi.org/10.1016/j.rse.2006.07.026 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29021
in Remote sensing of environment > vol 112 n° 1 (15/01/2008) . - pp 75 - 93[article]
Titre : 3D topography : a simplicial complex-based solution in a spatial DBMS Type de document : Thèse/HDR Auteurs : F. Penninga, Auteur Editeur : Delft : Netherlands Geodetic Commission NGC Année de publication : 2008 Collection : Netherlands Geodetic Commission Publications on Geodesy, ISSN 0165-1706 num. 66 Importance : 192 p. Format : 17 x 24 cm ISBN/ISSN/EAN : 978-90-6132-304-4 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] algorithme du simplexe
[Termes IGN] base de données localisées 3D
[Termes IGN] données localisées 3D
[Termes IGN] milieu urbain
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] objet géographique 3D
[Termes IGN] système de gestion de base de données
[Termes IGN] tétraèdre
[Termes IGN] Triangulated Irregular Network
[Termes IGN] visualisation 3DIndex. décimale : 32.00 Topographie - généralités Résumé : (Auteur) Current topographic products are limited to a real world representation in only two dimensions, with at best some additional point heights and contour lines. Modelling the real world in two dimensions implies a rather drastic simplification of three di-mensional real world elements. By representing these elements in two dimensions, loss of information is inevitable. Due to this simplification, accuracy of analysis results is limited and a meaningful, insightful representation of complex situations is hard to obtain. Environmental issues like high concentrations of particulate matter along highways in urban areas, the effects of noise and odour propagation and risk analysis of liquefied petroleum gas storage tanks are random examples of current issues in 3D urban planning in which more precision is required than 2D analyses can offer. In a time with increasing attention for these kind of environmental and sustainability issues, limitations of 2D models become real problematic and trigger the demand for 3D topography.
The development of 3D topography is also supply-driven, especially by the increasing availability of high density laser scan data. Height data becomes available with point densities -multiple height points per square meter- that were previously unthinkable with traditional photogrammetric stereo techniques. Direct 3D data ac-quisition by terrestrial laser scanning is emerging, thus providing detailed measure-ments of facades, tunnels and even indoor topography. The fast developments in this field are partly triggered by the emerging popularity of personal navigation devices, which will use 3D models in the future to simplify user interpretation of the (map) display.
Objective and research question
The objective of this research is to develop a data structure that is capable of han-dling large data volumes and offers support for loading, updating, querying, analysis and especially validation. To achieve this, a triangular approach will be used, due to its advantages in maintaining consistency, its robustness and editability. This tri-angular approach creates a network of triangles (in 2D) or tetrahedrons (in 3D), in which topographic features are represented by sets of triangles or tetrahedrons. Such a network is an example of an irregular tessellation, in which the real world is de--composed into smaller (triangle/tetrahedron-shaped) building blocks. The resulting networks are called TINs (Triangular Irregular Networks) or TENs (TEtrahedronised irregular Networks). The presence of boundaries of topographic features are ensured by the use of constraints, preventing the deletion of crucial boundary edges and trian-gles. Algorithms exist to calculate these constrained triangulations and constrained tetrahedronisations of topographic data.
In this research a two-step approach will be adopted. First one has to decide how real-world objects should be modelled into features, secondly one needs to store these features in such a way that the requirements in terms of querying, analysis and validation are met. An obvious step in dealing with large volumes of geographically referenced data, is to use a spatial database.
This objective is expressed in the main research question:
How can a 3D topographic representation be realised in a feature-based triangular data model?
Note that the term 'triangular' is used here in general dimension, so both triangle-and tetrahedron-based models will be considered. As mentioned before, a two-step approach will be adopted to achieve a solution to the main research question. In accordance with the two steps, two key questions can be distinguished:
How to develop a conceptual model that describes the real world phenomena (the topographic features), regarding the general purpose-characteristic of to-pographic data sets?
How to implement this conceptual model, i.e. how to develop a suitable DBMS data structure?
The results of this research will be summarised according to this two-step approach.
A conceptual data model for 3D topography
One of the basic assumptions within this research is the use of triangular data models. As a result, topographic features will be described as sets of triangles and these fea-tures will be connected by triangles as well, thus creating one triangular network. This research explored two different approaches to triangular modelling of 3D topography.
The first one is a very pragmatic hybrid approach that combines a 2.5D* sur-face with 3D objects for those cases where 2.5D modelling is not sufficient. In terms of triangular data structures, this approach combines a TIN with several TENs. These irregular data structures not only allow varying point density (de-pending on local model complexity), but extend this irregularity into varying even model dimensionality, thus offering the ultimate fit-for-purpose approach. Unfortunately, connecting TIN and TEN networks appeared to be very difficult at design level and during prototype implementation.
The second approach avoids these problems, since it is a full 3D approach using only a TEN. Two fundamental observations are of great importance:
Physical objects have by definition a volume. In reality, there are no point, line or polygon objects; only point, line or polygon representations exist (at a certain level of abstraction/generalisation).
The real world can be considered a volume partition: a set of nonoverlap-ping volumes that form a closed (i.e. no gaps within the domain) modelled space. Objects like 'earth' or 'air' are thus explicitly included in the model.
In topographic data models, planar features like walls or roofs are obviously very useful. They can be part of the volumetric data model as 'derived features', i.e. these features depend on the relationship between volume features. For example, the earth surface is the boundary between air and earth features, while a wall or a roof are the result of adjacent building and air features. In terms of UML, these planar features are modelled as association classes. As a result, planar features are lifetime dependent from the association between two volume features.
Among the advantages of the full volumetric approach are its explicit inclusion of air and earth (often subject of analysis), its extensibility (geology, air traf-fic/telecommunication corridors, etc.) and its strong mathematical definition (full connectivity enables the use of topology for query, analysis and validation). As a re-sult, topographic features will be modelled in a TEN. Each feature will be represented by a set of tetrahedrons.
A data structure for 3D topography
The newly developed data structure has three important characteristics:
It has a solid mathematical foundation. Operators and definitions from the mathematical field of Poincare simplicial homology (part of algebraic topology) are used to handle simplexes^, the basic elements in a triangular data structure. Simplexes are well defined, ordered and constructed of simplexes of lower di-mension. The boundary operator can be used to derive these less dimensional
*See section 2.2 for an overview of often-used dimension indicators
tA simplex can loosely be defined as the simplest shape in a dimension, in which simplest refers to minimising the number of points required to define such a shape, for instance a point, a line, a triangle and a tetrahedron. See section 4.1 for a proper mathematical definition simplexes. Based on the ordering of simplexes, one can determine orientation, a useful concept in GIS. Another important concept from simplicial homology is the simplicial complex, since such a set of connected simplexes will be used to model 3D topographic features.
It is developed as a spatial database data structure. Applying definitions and operators from simplicial homology enables one to store a TEN in a relatively compact way. The new simplicial complex-based method requires only explicit storage of tetrahedrons, while simplexes of lower dimensions (triangles, edges, nodes), constraints (which guarantee feature boundary presence) and topologi-cal relationships can be derived in views. Using functions to derive views from a table is typical database functionality. In this implementation, simplexes are en-coded by their vertices, similar to the annotation in simplicial homology. These simplex encodings are extended with a feature identifier, indicating which to-pographic feature is (partly) represented by this simplex. So, a tetrahedron is encoded as 83 =< vq, Vi, V2,v^, fid >. Two variants in simplex encoding have been developed: coordinate concatenation and identifier concatenation. The concept of coordinate concatenation is to concatenate x, y and z coordinates as node identifiers and to concatenate the resulting unique node codes to describe simplexes of higher dimension. The alternative approach, identifier concatena-tion, uses separate (meaningless) node identifiers to encode simplexes to reduce the number of coordinate repetitions, since a specific node will be part of multi-ple tetrahedrons. This approach requires an additional node table to store node geometries.
It is an editable data structure, which is a crucial prerequisite to be a feasible approach for topographic data storage. Incremental updates are required, since complete rebuilds of the TEN structure will be time-consuming due to the ex-pected data volumes. Whereas most existing update algorithms for constrained tetrahedronisations use node insertions, followed by edge reconstruction, this research presents edge insertion operators. Nine exhaustive and mutually exclusive cases are distinguished, based on the location in the TEN of the inserted edge's nodes. These operators guarantee the constrained edge's presence in the structure. Existing operators might fail to recover these edges, due to the pres-ence of nearby constrained edges, which would typically happen in topographic data sets.
Conclusions
This dissertation presents a new topological approach to data modelling, based on a tetrahedral network. Operators and definitions from the field of simplicial homology are used to define and handle this structure of tetrahedrons. Simplicial homology provides a solid mathematical foundation for the data structure and offers full control over orientation of simplexes and enables one to derive substantial parts of the TEN structure efficiently, instead of explicitly storing all primitives. DBMS characteristics as the usage of views, functions and function-based indexes are extensively used to realise this potential data reduction. A proof-of-concept implementation was created and tests with several data sets show that the prevailing view that tetrahedrons are more expensive in terms of storage when compared to polyhedrons, is not correct when using the proposed approach. Storage requirements for 3D objects in tetrahe-dronised form (excluding the space in between these objects) and 3D objects stored as polyhedrons, are in the same order of magnitude.
A TEN has favourable characteristics from a computational point of view. All elements of the tetrahedral network consist by definition of flat faces, all elements are convex and they are well defined. Validation of 3D objects is also simplified by tetrahedronisation. Furthermore, a full volumetric approach enables future integra-tion of topography with other 3D data like geological layers, polluted regions or air traffic and telecommunication corridors. The price of this full volumetric approach in terms of storage space is high (about 75% of the tetrahedrons models air or earth); nevertheless this approach is likely to become justifiable due to current developments towards sustainable urban development and increased focus on environmental issues.
Now the innovative aspects of the proposed method has to be identified. Neither the idea to use a TEN data structure for 3D data nor the idea to use simplexes (in terms of simplicial homology) in a DBMS implementation is new. However, the proposed approach reduces data storage and eliminates the need for explicit updates of both topology and simplexes of lower dimension. By doing so, the approach tackles common drawbacks as TEN extensiveness and laboriousness of maintaining topology. Furthermore, applying simplicial homology offers full control over orientation of sim-plexes, which is a significant advantage, especially in 3D. In addition to this aspect, the mathematical theory of simplicial homology offers a solid theoretical foundation for both the data structure and data operations. Integrating these concepts with database functionality results in a new innovative approach to 3D data modelling.
An often raised objection to a TEN approach is its presumed complexity. Obviously, a l:n relation exists between features and their tetrahedron representations. However, as long as a user handles only features (as polyhedrons) and implemented algorithms translate these polyhedrons into operations on the TEN, one can over-come the perceived complexity. Furthermore, the prevailing view that tetrahedrons are more expensive in terms of storage than polyhedrons has been falsified in this research.
Overall, the simplicial complex-based modelling approach provides a provable correct modelling method. The use of tetrahedrons is justified by the mathematical benefits and the acceptable storage requirements. Obviously, including air and earth within the model comes at a price, but -as stated earlier- this approach is likely to become justifiable, due to current sustainability and environmentally-driven developments. The decision to develop the data structure as a database structure contributes to the overall feasibility, since a database will become indispensable due to the expected data volumes.Note de contenu : Acknowledgements
1 Introduction
1.1 Motivation
1.2 Objective and main research question
1.3 Research scope and limitations
1.4 Contribution of the work
1.5 Outline
2 Research background
2.1 Problem domain: Towards 3D topography
2.2 Defining dimensions in the range 2D-3D
2.3 Deriving requirements for the conceptual data model and structure from the problem
2.4 Managing 3D data: related research on 3D data structures
2.5 Triangular data structures and algorithms
2.6 Relevant database concepts
I Conceptual modelling of 3D Topography
3 Two triangular data models for 3D topography
3.1 Approach 1: an integrated 2.5D/3D model
3.2 Approach 2: a full 3D data model
3.3 The choice for the full 3D approach
II A Data structure for 3D Topography
4 Theoretical foundations: Poincare simplicial homology
4.1 Mathematical description of simplexes
4.2 Orientation of simplexes
4.3 Combining simplexes: simplicial complexes
4.4 Operations on simplexes and simplicial complexes
5 A simplicial complex-based solution for 3D topography
5.1 Representing topographic features in a TEN
5.2 Early ideas: three TEN-based data structures for the full 3D approach
5.3 Preferred solution: applying simplicial homology to the TEN
5.4 Implementing the data structure in a DBMS environment
5.5 Summary
6 Updating features in the Data Structure
6.1 Incremental update: feature insertion
6.2 Incremental update: feature deletion
6.3 Quality improvement of TEN structure
6.4 Initial bulk loading and bulk rebuild
III Evaluation and conclusions
7 Evaluation and discussion
7.1 Evaluation material: three different data sets
7.2 Evaluating bulk tetrahedronisation process
7.3 Evaluating storage requirements
7.4 Evaluating initial visualisation tools
7.5 Discussing requirements for 3D data sets with correct topology
7.6 Identifying future developments
8 Conclusions
8.1 Results.
8.2 Main conclusions
8.3 Discussion
8.4 Future researchNuméro de notice : 15361 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère DOI : sans En ligne : https://www.ncgeo.nl/index.php/en/publicatiesgb/publications-on-geodesy/item/250 [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62703 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15361-01 32.00 Livre Centre de documentation Topographie Disponible 15361-02 32.00 Livre Centre de documentation Topographie Disponible
Titre : Actes de la journée INSPIRE 2008 du CNIG, INSPIRE : où passera le chemin de l'administration électronique géographique ? Type de document : Actes de congrès Auteurs : Marc Léobet, Auteur Editeur : Paris [France] : Centre national de l'information géographique CNIG Année de publication : 2008 Conférence : CNIG 2008, Journée nationale de la recherche géographique, INSPIRE : où passera le chemin de l'administration électronique géographique ? 19/12/2008 Paris France Importance : 27 p. Format : 21 X 30 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] catalogue de données localisées
[Termes IGN] collectivité territoriale
[Termes IGN] directive européenne
[Termes IGN] données localisées
[Termes IGN] information géographique numérique
[Termes IGN] INSPIRE
[Termes IGN] métadonnéesNuméro de notice : 13840 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=37421 Documents numériques
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Goodwin in Remote sensing of environment, vol 111 n° 4 (28/12/2007)PermalinkAim4GDI: facilitating the synthesis of GDI resources through mapping and surimpositions of metadata summaries / T. Aditya in Geoinformatica, vol 11 n° 4 (December 2007)PermalinkAppariement de données géographiques utilisant la théorie des croyances / Ana-Maria Raimond in Le monde des cartes, n° 194 (décembre 2007)PermalinkUn client web pour découvrir, explorer et tester des traitements sur des données géographiques / Bénédicte Bucher in Le monde des cartes, n° 194 (décembre 2007)PermalinkDiffusion des géodonnées et géoportail / P. Minier in Géomètre, n° 2043 (décembre 2007)PermalinkLa France a comblé ses dix ans de retard / Michel Kasser in Géomètre, n° 2043 (décembre 2007)PermalinkGeometric accuracy assessment of QuickBird basic imagery using different operational approaches / M. Aguilar in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 12 (December 2007)PermalinkGéoportail : plate-forme de services pour la diffusion et l'utilisation / Patrick Leboeuf in Géomètre, n° 2043 (décembre 2007)PermalinkImproving river flood extent delineation from synthetic aperture radar using airborne laser altimetry / D.C. Mason in IEEE Transactions on geoscience and remote sensing, vol 45 n° 12 Tome 1 (December 2007)PermalinkLe lidar topographique à retour d'onde complète: Etat de l'art / Clément Mallet in Traitement du signal, vol 24 n° 6 (01/12/2007)PermalinkPourquoi et comment écrire la structure d'un jeu de données géographiques / Sandrine Balley in Le monde des cartes, n° 194 (décembre 2007)PermalinkPréservation de l'écoulement du réseau hydrographique sur le relief en généralisation cartographique / Julien Gaffuri in Le monde des cartes, n° 194 (décembre 2007)PermalinkRéférentiels à très grande échelle : indispensables, mais oubliés / Françoise de Blomac in SIG la lettre, n° 92 (décembre 2007)PermalinkRévision des connaissances d'un processus de généralisation de données géographiques / Patrick Taillandier in Le monde des cartes, n° 194 (décembre 2007)PermalinkOrthogonal polynomials supported by regional growing segmentation for the extraction of terrain from lidar data / N.A. Akel in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 11 (November 2007)PermalinkOrthophoto generation from unorganized point clouds / L. Tournas in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 11 (November 2007)PermalinkQuand la géomatique veille / Françoise de Blomac in SIG la lettre, n° 91 (novembre 2007)PermalinkRigid and non-rigid face motion tracking by aligning texture maps and stereo 3D models / Fadi Dornaika in Pattern recognition letters, vol 28 n° 15 (1 November 2007)PermalinkVers une géographie volontaire ? / Françoise de Blomac in SIG la lettre, n° 91 (novembre 2007)PermalinkPermalinkAugmentation of indoor positioning systems with a barometric pressure sensor for direct altitude determination in a multi-storey building / Guenther Retscher in Cartography and Geographic Information Science, vol 34 n° 4 (October 2007)PermalinkClassification of floodplain vegetation by data fusion of spectral (CASI) and LiDAR data / G.W. Geerling in International Journal of Remote Sensing IJRS, vol 28 n°19-20 (October 2007)PermalinkIntegration of heterogeneous geospatial data in a federated database / Matthias Butenuth in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 5 (October 2007)PermalinkIntelligent map agents: an ubiquitous personalized GIS / E. Gervais in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 5 (October 2007)PermalinkA rough set approach to the discovery of classification rules in spatial data / Yee Leung in International journal of geographical information science IJGIS, vol 21 n° 9-10 (october 2007)PermalinkCharacterizing patterns of plant distribution in a southern California salt marsh using remotely sensed topographic and hyperspectral data and local tidal fluctuations / S. Sadro in Remote sensing of environment, vol 110 n° 2 (28/09/2007)PermalinkAn inexpensive stereo-image capture tool for motion study / A.K. Chong in Photogrammetric record, vol 22 n° 119 (September - November 2007)PermalinkCartographie géologique volumique du bassin versant du Nahr Beyrouth (Liban) : Application aux ressources en eaux souterraines / D. Dhont in Photo interprétation, vol 43 n° 3 (Septembre 2007)PermalinkConstruction et intégration de maquettes 3D dans un SIG / M. Koehl in Géomatique expert, n° 58 (01/09/2007)PermalinkÉlaboration d'une base de données géologique 3D : application à la gestion des ressources naturelles du sous-sol de Genève / O. Kaufmann in Géomatique expert, n° 58 (01/09/2007)PermalinkLa formation et la recherche en acquisition et traitement de données géomatiques / Rock Santerre in Geomatica, vol 61 n° 3 (September 2007)PermalinkGeolis: a logical information system for geographical data / O. Bedel in Revue internationale de géomatique, vol 17 n° 3-4 (septembre 2007 – février 2008)PermalinkHighlighting space-time patterns: effective visual encoding for interactive decision-making / Mike Sips in International journal of geographical information science IJGIS, vol 21 n° 8 (september 2007)PermalinkImprécision et incertitude en traitement de l'information géographique / Pierre Dumolard in Revue internationale de géomatique, vol 17 n° 3-4 (septembre 2007 – février 2008)PermalinkMapping of environmental data using kernel-based methods / Mikhail Kanevski in Revue internationale de géomatique, vol 17 n° 3-4 (septembre 2007 – février 2008)PermalinkA new model for cloud tracking and analysis on satellite images / E. Guilbert in Geoinformatica, vol 11 n° 3 (September - November 2007)PermalinkQuantification globale des écarts géométriques entre plans cadastraux DGI et référentiels IGN dans le cadre du géoreférencement de la BD parcellaire en mode image / F. Chahuneau in XYZ, n° 112 (septembre - novembre 2007)PermalinkLa recherche foncière et juridique au département des sciences géomatiques / Francis Roy in Geomatica, vol 61 n° 3 (September 2007)PermalinkReprésentation 3D architecturale du temple d'Auguste et Livie à Vienne (Isère) / C. Ravier in XYZ, n° 112 (septembre - novembre 2007)PermalinkA spatio-temporal population model to support risk assessment and damage analysis for decision-making / T. Ahola in International journal of geographical information science IJGIS, vol 21 n° 8 (september 2007)PermalinkWeight-proportional space partitioning using adaptative Voronoi diagrams / R. Reitsma in Geoinformatica, vol 11 n° 3 (September - November 2007)PermalinkEfficient multiresolution spatial predictions for large data arrays / Magnussen, Steen in Remote sensing of environment, vol 109 n° 4 (30 August 2007)PermalinkDonnées transfrontalières au niveau européen : comment harmoniser les données vectorielles aux frontières dans le cadre des bases de données paneuropéennes ERM, EGM / N. Delattre in Géomatique suisse, vol 105 n° 8 (01/08/2007)PermalinkGeneration of mosaiced digital true orthophotographs from multispectral and Lidar data / N. Balic in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)PermalinkMoving towards 3D: from a national mapping agency perspective / D. Capstick in Cartographic journal (the), vol 44 n° 3 (August 2007)PermalinkStrategic alignments: a common direction from local to European / Keith J. Murray in Cartographic journal (the), vol 44 n° 3 (August 2007)PermalinkTerrestrial laser scanner to detect landslide displacement fields: a new approach / Giordano Teza in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)PermalinkWaterside mapping in Italy / P. Byham in GIM international, vol 21 n° 8 (August 2007)PermalinkAccuracy assessment of digital elevation models using a non-parametric approach / F. Aguilar in International journal of geographical information science IJGIS, vol 21 n° 6-7 (july 2007)PermalinkBilan et perspectives de 20 années de géomatique / Henri Pornon in Géomatique expert, n° 57 (01/07/2007)PermalinkBuilding boundary tracing and regularization from airborne lidar point clouds / A. Sampath in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 7 (July 2007)PermalinkCalli-info-carto-graphie / Anonyme in Géomatique expert, n° 57 (01/07/2007)PermalinkImpact of lidar nominal post-spacing on DEM accuracy and flood zone delineation / G.T. Raber in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 7 (July 2007)PermalinkInterpretation and generalization of 3D landscape from lidar data / S. Filin in Cartography and Geographic Information Science, vol 34 n° 3 (July 2007)PermalinkMobilité : tout un monde à modéliser / Françoise de Blomac in SIG la lettre, n° 89 (juillet 2007)PermalinkModeling visibility through vegetation / M. Llobera in International journal of geographical information science IJGIS, vol 21 n° 6-7 (july 2007)PermalinkStandards in practice: part 2 metadata / Huibert-Jan Lekkerkerk in Geoinformatics, vol 10 n° 5 (01/07/2007)PermalinkThe design and implementation of spirit: a spatially aware search engine for information retrieval on the Internet / Ross S. Purves in International journal of geographical information science IJGIS, vol 21 n° 6-7 (july 2007)PermalinkApports de la télédétection à l'étude de la déformation des chainons de Metlaoui (Tunisie Centro-méridionale) / Maged Jabbour in Photo interprétation, vol 43 n° 2 (Juin 2007)Permalinkn° 186 - Juin 2007 - Atelier REGLIS : LIDAR et surfaces continentales : techniques, applications et perspectives, Montpellier, 7 et 8 décembre 2006 (Bulletin de Revue Française de Photogrammétrie et de Télédétection) / C. PuechPermalinkBuilding detection by fusion of airborne laser scanner data and multi-spectral images: performance evaluation and sensitivity analysis / Franz Rottensteiner in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 2 (June 2007)PermalinkCartographie multi-résolution dans un contexte mobile / Jean-Michel Follin in Revue internationale de géomatique, vol 17 n° 2 (juin – août 2007)PermalinkCartographier la structure de la végétation forestière avec un système lidar aéroporté en terrain montagnard / L. Dorren in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkA concept for feature based data registration by simultaneous consideration of laser scanner data and photogrammetric images / A. Wendt in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 2 (June 2007)PermalinkContextualization of geospatial database semantics for Human-GIS Interaction / G. Cai in Geoinformatica, vol 11 n° 2 (June - August 2007)PermalinkDesigning visual analytics methods for massive collections of movement data / Natalia Adrienko in Cartographica, vol 42 n° 2 (June 2007)PermalinkÉpaisseur d'eau minimale mesurable en rivière sur fronts d'ondes lidar simulés / A. Lesaignoux in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkGeneralization of 3D building data based on a scale-space approach / A. Forberg in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 2 (June 2007)PermalinkIntérêt du lidar dans le domaine des levés / P. Monnier in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkLidar et applications en géophysique externe / P.H. Flamant in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkLe lidar à retour d'onde complet : nature de l'information enregistrée et perspectives d'utilisations / Sylvie Durrieu in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkMatching of 3D surfaces and their intensities / Devrim Akca in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 2 (June 2007)PermalinkMinimising algorithm-induced artefacts in true ortho-image generation: a direct method implemented in the vector domain / Y. Sheng in Photogrammetric record, vol 22 n° 118 (June - August 2007)PermalinkPremières applications de la technique du lidar appliquée à l'étude des sites patrimoniaux, les exemples allemands et alsaciens / B. Sittler in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkA schedule-based pathfinding algorithm for transit networks using Pattern First Search [PFS] / R. Huang in Geoinformatica, vol 11 n° 2 (June - August 2007)PermalinkLa télédétection lidar : projet "Flimap-digues" et derniers développements de l'utilisation de méthodes à haut rendement pour la reconnaissance des digues fluviales françaises / A. Clement in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkTraitement de données lidar aéroporté : vers une solution globale / Frédéric Bretar in Revue Française de Photogrammétrie et de Télédétection, n° 186 (Juin 2007)PermalinkUnderstanding spatiotemporel patterns: visual ordening of space and time / Menno-Jan Kraak in Cartographica, vol 42 n° 2 (June 2007)PermalinkVolume souterrain 3D et laserscanning / Stéphane Jaillet in Collection EDYTEM. cahiers de géographie, n° 5 (01/06/2007)PermalinkSatellite-derived cloud top pressure product validation using aircraft-based cloud physics Lidar from the ATReC field campaign / S.T. Bedka in International Journal of Remote Sensing IJRS, vol 28 n° 10 (May 2007)PermalinkRepetitive interpolation: A robust algorithm for DTM generation from aerial Laser scanner data in forested terrain / A. Kobler in Remote sensing of environment, vol 108 n° 1 (15/05/2007)PermalinkAnalysis of a possible future degradation in the DORIS geodetic results related to changes in the satellite constellation / Pascal Willis in Advances in space research, vol 39 n° 10 (May 2007)PermalinkData fusion of high-resolution satellite imagery and Lidar data for automatic building extraction / Gunho Sohn in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 1 (May 2007)PermalinkDetection and vectorization of roads from lidar data / S. Clode in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 5 (May 2007)PermalinkDORIS satellite phase center determination and consequences on the derived scale of the Terrestrial Reference Frame / Pascal Willis in Advances in space research, vol 39 n° 10 (May 2007)PermalinkLe GPS dans les pratiques artistiques contemporaines / Françoise de Blomac in SIG la lettre, n° 87 (mai 2007)PermalinkL'information géographique a-t-elle besoin d'une loi ? / Françoise de Blomac in SIG la lettre, n° 87 (mai 2007)PermalinkInteractive visualization of uncertain spatial and spatio-temporal data under different scenarios: an air quality example / Edzer J. Pebesma in International journal of geographical information science IJGIS, vol 21 n° 5 (may 2007)PermalinkModelling landscape dynamics with Python / D. Karssenberg in International journal of geographical information science IJGIS, vol 21 n° 5 (may 2007)PermalinkSIG et risques nucléaires / Anonyme in Géomatique expert, n° 56 (01/05/2007)PermalinkExtending the MODIS 1 km ocean colour atmospheric correction to the MODIS 500 m bands and 500 m chlorophyll-a estimation towards coastal and estuarine monitoring / J.D. Shutler in Remote sensing of environment, vol 107 n° 4 (30/04/2007)Permalink4D data fusion for the geospatial intelligence community: Intelligent GIS / F. Artes in Geoinformatics, vol 10 n° 3 (01/04/2007)PermalinkDes activités supplémentaires / Michel Kasser in Géomètre, n° 2036 (avril 2007)PermalinkUn avenir à écrire en trois dimensions / Michel Kasser in Géomètre, n° 2036 (avril 2007)PermalinkGeneration of orthoimages and perspective views with automatic visibility checking and texture blending / G.E. Karras in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 4 (April 2007)PermalinkStratégies de concertation : la méthode 3D-GVA (Bulletin de Traits urbains) / Jacques AudouinPermalinkAdvances in GML for geospatial applications / C.T. Lu in Geoinformatica, vol 11 n° 1 (March - May 2007)PermalinkLes agriculteurs de PACA vont prendre l'air / Françoise de Blomac in SIG la lettre, n° 85 (mars 2007)PermalinkEvaluation de différentes méthodes d'interpolation spatiale pour la production d'un MNT à partir de données topographiques dans un SIG / Noamen Rebaï in XYZ, n° 110 (mars - mai 2007)PermalinkIntégrer bathymétrie et LIDAR / Valerio Baiocchi in Géomatique expert, n° 55 (01/03/2007)PermalinkLiDAR-derived high quality ground control information and DEM for image orthorectification / X. Liu in Geoinformatica, vol 11 n° 1 (March - May 2007)PermalinkMétadonnées spatiotemporelles temps réel / C. Gutierrez in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 12 n° 2 (mars - avril 2007)PermalinkNouvelles technologies : quelles (r)évolutions pour la topographie ? / Tania Landes in XYZ, n° 110 (mars - mai 2007)PermalinkOntology-based descriptions for semantic discovery and composition of geoprocessing services / M. Lutz in Geoinformatica, vol 11 n° 1 (March - May 2007)PermalinkOracle, PostGIS et MySQL : éléments de comparaison / N. Ribot in Géomatique expert, n° 55 (01/03/2007)PermalinkQualité des données géographiques : Obligations juridiques potentielles et modèle du producteur raisonnable / Marc Gervais in Revue internationale de géomatique, vol 17 n° 1 (mars – mai 2007)PermalinkRaster-network regionalization for watershed data processing / T.L. Whiteaker in International journal of geographical information science IJGIS, vol 21 n° 3-4 (march - april 2007)PermalinkA robust surface matching technique for integrated monitoring of coastal geohazards / P. Miller in Marine geodesy, vol 30 n° 1-2 (March - June 2007)PermalinkSémantique et modélisation de scènes 3D / I.M. Bilasco in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 12 n° 2 (mars - avril 2007)PermalinkTerrestrial and submerged aquatic vegetation mapping in Fire Island national seashore using high spatial resolution remote sensing data / Y. Wang in Marine geodesy, vol 30 n° 1-2 (March - June 2007)PermalinkThe need for a dynamic cadastre system in the modern digital legal cadastre / Jad Jarroush in Geomatica, vol 61 n° 1 (March 2007)PermalinkTowards spatial data quality information analysis tools for experts assessing the fitness for use of spatial data / Rodolphe Devillers in International journal of geographical information science IJGIS, vol 21 n° 3-4 (march - april 2007)PermalinkVers l'interopérabilité des modèles de localisation géométrique et sémantique au travers de l'utilisation de métadonnées / T. Delot in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 12 n° 2 (mars - avril 2007)PermalinkFusion of imaging spectrometer and LIDAR data over combined radiative transfer models for forest canopy characterization / B. Koetz in Remote sensing of environment, vol 106 n° 4 (28/02/2007)Permalink3D Visualisation of Lidar data: state of the art and proposed system / S. Ghosh in GIM international, vol 21 n° 2 (February 2007)PermalinkAn experiment using a circular neighborhood to calculate slope gradient from a DEM / X. Shi in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 2 (February 2007)PermalinkAn integrated approach for modelling and global registration of point clouds / T. Rabbani in ISPRS Journal of photogrammetry and remote sensing, vol 61 n° 6 (February 2007)PermalinkL'homme de la juste gestion de la mesure / M. Mayo in Géomètre, n° 2034 (février 2007)PermalinkRaster in the database / J. Skiffingtonn in GEO: Geoconnexion international, vol 6 n° 2 (february 2007)Permalink2D building change detection from high resolution aerial images and correlation digital surface models / Nicolas Champion (2007)PermalinkAcquisition automatique de connaissance de guidage d'un processus de généralisation de données géographiques / Patrick Taillandier (2007)PermalinkPermalinkAnalyse de données lidar aéroporté en zone littorale / Frédéric Bretar (2007)PermalinkApplication of terrestrial laser scanning for risk mapping / Jose Luis Lerma Garcia (2007)PermalinkAuto-qualification de données géographiques 3D par appariement multi-image et classification supervisée / Laurence Boudet (2007)PermalinkCartographie thématique, 1. Une nouvelle démarche / Colette Cauvin (2007)PermalinkCombining formal and exploratory methods for evaluation of an exploratory geovisualization: Application in a low-cost usability experiment / Urška Demšar in Cartography and Geographic Information Science, vol 34 n° 1 (January 2007)PermalinkComparative tempo-spatial pattern analysis: CTSPA / Y. Xie in International journal of geographical information science IJGIS, vol 21 n° 1-2 (january 2007)PermalinkContour line thinning and multigrid generation of raster-based digital elevation models / E. Katona in International journal of geographical information science IJGIS, vol 21 n° 1-2 (january 2007)PermalinkContribution d'un SIG à la gestion des ressources en eaux souterraines : cas de la nappe profonde de Sfax, Tunisie / Nadia Trabelsi in Géomatique expert, n° 54 (01/01/2007)PermalinkDiffusion : quels droits pour l'information géographique ? / Françoise de Blomac in SIG la lettre, n° 83 (janvier 2007)PermalinkDigital terrain model on vegetated areas: joint use of airborne Lidar data and optical images / Frédéric Bretar (2007)PermalinkECTQG07, 15th european colloquium on theoretical and quantitative geography, 7 - 11 September 2007, City of Montreux, Switzerland / François Bavaud (2007)PermalinkEfficient transmission of vector data over the Internet / B. Yang in International journal of geographical information science IJGIS, vol 21 n° 1-2 (january 2007)PermalinkEtude SIG de la corrélation entre exposition indirecte à l'amiante et asbestose / P. De Crouy-Chanel in Géomatique expert, n° 54 (01/01/2007)PermalinkImplémentation d’un algorithme de généralisation automatique de bâtiments 3D / Aurélien Velten (2007)PermalinkL'information géographique et la sphère aménagement, urbanisme, habitat et construction / R. Mazin (2007)PermalinkIntégration de l'information géographique dans les entrepôts de données et l'analyse en ligne : de la modélisation à la visualisation / Sandro Bimonte (2007)PermalinkLIDAR : une technique prometteuse / Françoise de Blomac in SIG la lettre, n° 83 (janvier 2007)PermalinkMetric details of topological line-line relations / K.A. Nedas in International journal of geographical information science IJGIS, vol 21 n° 1-2 (january 2007)PermalinkMise en place d'une campagne d'acquisition laser et photogrammétrique au sein du projet Baetocaece / Marie Feisthauer (2007)Permalink