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Unit of Geomatics
Qualitative Spatio-Temporal Reasoning & Spatial Database Design
Focus on 2 research topics
at the Unit of Geomatics
of the University of Liège
J-P. Donnay – P. Hallot – F. Laplanche
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
1
Curriculum in « Surveying & Geomatics »
in the Faculty of Sciences of the University of LiègeOnly education programme devoted to this field in the French-speaking Belgian Universities !
Common
1st year
Bachelor Degree in
Geographical Sciences
2d year Geography Surveying & Geomatics
3d year Geography Surveying & Geomatics
1st yearMaster Degree in
Applied Geomatics
Master Degree in
Surveying & Geomatics
2d yearMaster Degree in
Applied Geomatics
Master Degree in
Surveying & Geomatics
Doctorate Degree in Sciences
Any other
Bac. Degree
in Sciences or
Engineering
Other Master
Degrees in
Sciences or
Engineering
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
2
International Education Networks
Master Degree in
Applied Geomatics
Master Degree in
Surveying & Geomatics
Sherbrooke Montpellier LavalParis – Le Mans
- Strasbourg
http://images.google.be/imgres?imgurl=http://www.ucam.ac.ma/fssm/ciro05/images/logo_sherbrooke.jpg&imgrefurl=http://www.ucam.ac.ma/fssm/ciro05/&h=185&w=188&sz=15&hl=fr&start=6&tbnid=qb3wNXaRPpASiM:&tbnh=100&tbnw=102&prev=/images%3Fq%3DUniversit%25C3%25A9%2Bde%2BSherbrooke%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://tetis.teledetection.fr/http://images.google.be/imgres?imgurl=http://web.escem.fr/atelis/Version_ang/images/logo_sherbrooke_smll.gif&imgrefurl=http://web.escem.fr/atelis/Version_ang/partenariats_chaire_geomatique.htm&h=70&w=170&sz=7&hl=fr&start=3&tbnid=UkCtVHSiU-zbWM:&tbnh=41&tbnw=99&prev=/images%3Fq%3Dg%25C3%25A9omatique%2Bsherbrooke%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://pages.usherbrooke.ca/geomensa/images/logo_cartel3.gif&imgrefurl=http://pages.usherbrooke.ca/geomensa/&h=400&w=1360&sz=27&hl=fr&start=7&tbnid=e5uC6a0heykseM:&tbnh=44&tbnw=150&prev=/images%3Fq%3Dg%25C3%25A9omatique%2Bsherbrooke%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://www.escaia.fr/cms/img/nouveau_um2_seul_couleur1.png&imgrefurl=http://www.escaia.fr/&h=552&w=1000&sz=33&hl=fr&start=4&tbnid=O63r4cC_4J_zbM:&tbnh=82&tbnw=149&prev=/images%3Fq%3Duniversit%25C3%25A9%2Bde%2Bmontpellier%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://www.unimes.fr/img/logos/partenaires/1090933536_um3.jpg&imgrefurl=http://www.unimes.fr/nos.partenaires-132.php&h=72&w=80&sz=4&hl=fr&start=15&tbnid=Aota9ZgUhI1H5M:&tbnh=67&tbnw=74&prev=/images%3Fq%3Duniversit%25C3%25A9%2Bde%2Bmontpellier%2BIII%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://www.cdg.qc.ca/image_logo/11_octobre_2006_AQ15_19_32.JPG&imgrefurl=http://www.cdg.qc.ca/pages_industri/industri_actu_quebec.html&h=94&w=225&sz=12&hl=fr&start=6&tbnid=eNX88kHYLznpxM:&tbnh=45&tbnw=108&prev=/images%3Fq%3DG%25C3%25A9omatique%2BUniversit%25C3%25A9%2BLaval%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://www.scg.ulaval.ca/gps-rs/Images/LogoSCG_75.jpg&imgrefurl=http://www.scg.ulaval.ca/gps-rs/fr/CV2_fr.htm&h=361&w=475&sz=38&hl=fr&start=2&tbnid=5RA5fd8OYlpiOM:&tbnh=98&tbnw=129&prev=/images%3Fq%3DG%25C3%25A9omatique%2BUniversit%25C3%25A9%2BLaval%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://igs.ensg.ign.fr/shared_image/logo-ensg.gif&imgrefurl=http://igs.ensg.ign.fr/about.php%3FPHPSESSID%3Db19fd2b697e033143e2f503378e5441c&h=241&w=130&sz=5&hl=fr&start=6&tbnid=NraXLEFmWF67oM:&tbnh=110&tbnw=59&prev=/images%3Fq%3DENSG%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://lazarus.elte.hu/gb/dolgozo/jesus/eegecs/images/logo.gif&imgrefurl=http://lazarus.elte.hu/gb/dolgozo/jesus/eegecs/natrep/eureport.htm&h=192&w=600&sz=22&hl=fr&start=1&tbnid=d_VLaxr6yRTscM:&tbnh=43&tbnw=135&prev=/images%3Fq%3Deegecs%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfr
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
3
The Unit of Geomatics
Chairs and shared research domains
Geodesy Photogrammetr
y
Topography Remote Sensing Cartography
GNSS Spatial Analysis
GIS
Staff
Professors: 5
Prof. Assistant (Dr): 1
Researchers - Assistants (PhD Students): 7
Researchers: 5
Tech/Admin: 2
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
4
Typical applied researches
• Federal & Regional Agencies• GIS design & reengineering
• See Poster 1Distributed GISystem based on network technology
• RTK GPS network assessment
• « Crime mapping » & « Geographic profiling »
• Academic subcontracting, Local Authorities & Private Companies• Web GIS development
• Maps and Atlas design and production
• International projects• Geodesy & mathematical cartography (border conflicts)
• GIS & SDI design
http://images.google.be/imgres?imgurl=http://www.srwl.be/_images/logos/logo-rw.gif&imgrefurl=http://www.srwl.be/particuliers/locataire/aides.php&h=130&w=150&sz=3&hl=fr&start=4&tbnid=oCtDZHa151dxrM:&tbnh=83&tbnw=96&prev=/images%3Fq%3DDGATLP%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://biodiversite.wallonie.be/offh/LIFEPLTHAUTESFAGNES/Figures/logo_dgrne2003.jpg&imgrefurl=http://biodiversite.wallonie.be/offh/LIFEPLTHAUTESFAGNES/PLT1.htm&h=111&w=144&sz=4&hl=fr&start=8&tbnid=l-FtwRpXvKdf0M:&tbnh=72&tbnw=94&prev=/images%3Fq%3DDGRNE%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://www.qualitevillagewallonie.be/images/DGATLP-sigle.gif&imgrefurl=http://www.qualitevillagewallonie.be/agenda/&h=82&w=99&sz=2&hl=fr&start=7&tbnid=e-oXi_n5WU_P1M:&tbnh=68&tbnw=82&prev=/images%3Fq%3DDGATLP%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://www.eurobru.com/newflics.gif&imgrefurl=http://www.eurobru.com/poli35.htm&h=235&w=226&sz=36&hl=fr&start=2&tbnid=X7_SToKUVzhbXM:&tbnh=109&tbnw=105&prev=/images%3Fq%3Dpolice%2Bf%25C3%25A9d%25C3%25A9rale%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://chartegraphique.wallonie.be/files/DGST rvb.jpg
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
5
Examples of fundamental research topics
• GNSS
• See poster 2
Ionosphere Modelling for GALILEO Single-Frequency Users
• Satellite photogrammetry
• See poster 3
DTM extraction and validation from SPOT 5 satellite imagery
• Qualitative spatial reasoning
• Spatio-temporal reasoning: Lecture 1
• GIS design
• Open Source Spatial Database Design: Lecture 2
http://www.ulg.ac.be/http://images.google.be/imgres?imgurl=http://www.spacefacts.de/groups/patches/esa.gif&imgrefurl=http://www.spacefacts.de/groups/german/esa.htm&h=156&w=430&sz=17&hl=fr&start=3&tbnid=YFfK0ZfGOlYEFM:&tbnh=46&tbnw=126&prev=/images%3Fq%3Desa%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://cnes.cborg.net/jc2/telecharger/logo_cnes.jpg&imgrefurl=http://cnes.cborg.net/jc2/instructions.htm&h=214&w=614&sz=18&hl=fr&start=4&tbnid=YjFI2DeqfnZgNM:&tbnh=47&tbnw=136&prev=/images%3Fq%3Dcnes%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfrhttp://images.google.be/imgres?imgurl=http://earth.esa.int/rtd/Events/ESA-EUSC_2006/Logo_OGC_small.PNG&imgrefurl=http://earth.esa.int/rtd/Events/ESA-EUSC_2006/&h=116&w=303&sz=39&hl=fr&start=12&tbnid=L-glmBqisWKisM:&tbnh=44&tbnw=116&prev=/images%3Fq%3Dogc%2Blogo%26gbv%3D2%26svnum%3D10%26hl%3Dfr
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Unit of Geomatics
Qualitative Spatio-Temporal Reasoning
Research on a generalized
spatio-temporal reasoning model
J-P. Donnay – P. Hallot – F. Laplanche
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
7
Outlines
• Introduction
• Life-lines representation
• Research objectives
• Spatial “states”
• Spatio-temporal configurations
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
8
Qualitative spatio-temporal reasoning
• Growth of dynamics data acquisition systems (on-board
GPS, RFID-tags, Wi-Fi,…)
• Huge quantity of spatio-temporal data
• Necessity to develop spatio-temporal reasoning model to
extract information
• Several ways to develop spatio-temporal reasoning model :
• Combining a spatial and a temporal logic
• Create a mereotopology from the analysis of spatio-temporal
histories
• Users expects simple systems, useful and easily integrated
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
9
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
10
Time
Space
Space
The wolf eats the red rabbit.Intersection between the ST histories
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
11
Moving points in a 1D space
1D spatial spacespace
time
Spatio-temporal situationPrimitive Space
Topological touch between the two life-lines (red and grey)
-> ST meeting
No topological intersection between the two life-lines (blue and grey)
-> No ST meeting
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
12
General research objectives
• The underlying idea of this research is to extract spatio-temporal information by applying topological calculi on the life-lines.
• Research’s steps of PhD :• Construct an exhaustive set of ST configurations
mixing topological relationships and Allen’s time intervals.
• Develop a ST model based on topological calculi.
• Study the relevance of such a model / generalisation.
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
13
To fully encompass the ST information complexity, we propose 3
degenerated topological relationships between points.
Disjoint
« d »
Equal
« e »
Not A
« ¬A »
Not B
« ¬B »
Not A and Not B
« ¬A ⋀ ¬B »
Degenerated topological relationshipsTopological relationships
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
14
Degenerated topological relationships
• A « state » is a particular relationships between objects at a
given time.
• JEPD set of relationships:
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
15
ST configurations of level 3 with continuity
Exhaustive list available at
http://www.geo.ulg.ac.be/hallot/
Number of spatio-temporal configurations
with continuity assumption :
Level 2 : 5
Level 3 : 36
Level 4 : 159
Level 5 : 507
Level 6 : 1363
without continuity assumption :
Level 2 : 26
Level 3 : 126
Level 4 : 626
Level 5 : 3126
Level 6 : 15626
e e
B° δB B-
A° 1 0 0
δA 0 1 0
A- 0 0 1
e d
B° δB B-
A° 0 0 1
δA 0 1 1
A- 1 1 1
d d
B° δB B-
A° 0 0 1
δA 0 0 1
A- 1 1 1
e e d
B° δB B-
A° 1 0 1
δA 0 1 1
A- 1 1 1
e e ¬A
B° δB B-
A° 1 0 0
δA 1 1 0
A- 1 1 1
e e ¬B
B° δB B-
A° 1 1 1
δA 0 1 1
A- 0 0 1
e d e
B° δB B-
A° 0 0 1
δA 0 1 0
A- 1 0 1
d e d
B° δB B-
A° 1 0 1
δA 0 0 1
A- 1 1 1
d e ¬A
B° δB B-
A° 0 0 1
δA 1 0 1
A- 1 1 1
d e ¬B
B° δB B-
A° 0 1 1
δA 0 0 1
A- 1 1 1
e e d e
B° δB B-
A° 1 0 1
δA 0 1 0
A- 1 0 1
e d e ¬A
B° δB B-
A° 0 0 1
δA 1 1 0
A- 1 1 1
e d e ¬B
B° δB B-
A° 0 1 1
δA 0 1 1
A- 1 0 1
d e e ¬A
B° δB B-
A° 1 0 1
δA 1 0 1
A- 1 1 1
d e e ¬B
B° δB B-
A° 1 1 1
δA 0 0 1
A- 1 1 1
¬A e e ¬A
B° δB B-
A° 1 0 0
δA 1 0 0
A- 1 1 1
¬A e e ¬B
B° δB B-
A° 1 1 1
δA 1 0 1
A- 1 1 1
¬B e e ¬B
B° δB B-
A° 1 1 1
δA 0 0 1
A- 0 0 1
e e d e ¬A
B° δB B-
A° 1 0 1
δA 1 1 0
A- 1 1 1
e e d e ¬B
B° δB B-
A° 1 1 1
δA 0 1 1
A- 1 0 1
¬A e d e ¬A
B° δB B-
A° 0 0 1
δA 1 0 0
A- 1 1 1
¬A e d e ¬B
B° δB B-
A° 0 1 1
δA 1 0 1
A- 1 1 1
¬B e d e ¬B
B° δB B-
A° 0 1 1
δA 0 0 1
A- 1 0 1
¬A e e d e ¬A
B° δB B-
A° 1 0 1
δA 1 0 0
A- 1 1 1
¬B e e d e ¬B
B° δB B-
A° 1 1 1
δA 0 0 1
A- 1 0 1
33 Topological relationships between lines
file:///E:/EuroSDR/ST_CONFIG.htmfile:///E:/EuroSDR/ST_CONFIG.htmfile:///E:/EuroSDR/ST_CONFIG.htm
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
16
Conclusion and further research
• Check if generalisation of ST
configurations provides enough
ST meaning to perform ST
analyses.
• Extend model to higher spatial
dimensions and extend to
moving regions or bodies.
• Check possible integration /
combination with others ST
models
B° δB B-
A° 0 0 1
δA 0 0 1
A-
1 1 1
B° δB B-
A° 0 1 1
δA 0 0 1
A-
1 1 1
Behaviour monitoring
Epidemiology
Robot navigation
Vehicle monitoring
and management
Crime mapping
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
17
Qualitative spatial reasoning
Binary projective
relationships model
Billen R., Zlatanova S., Mathonet P. & Boniver F. 2002.
The Dimensional Model: a framework to distinguish
spatial relationships.
in D.Richardson & P. Van Oosterom (Ed.), Advances
in Spatial Data Handling. Berlin Heidelberg,
Springer-Verlag, pp. 285-298.
Ternary projective
relationships modelClementini E. & Billen R. 2006.
Modeling and Computing Ternary
Projective Relations Between Regions,
IEEE Transactions on Knowledge and
Data Engineering, 18 (6), pp. 799-814.
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Unit of Geomatics
Spatial Database Design
Web2GIS: a spatial database conception environment
J-P. Donnay – P. Hallot – F. Laplanche
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
19
Web2GIS
• Realized in the framework of a PhD defended on September 8th 2006
• Assessment:• Integrated tools for Spatial Databases conception stay essentially
proprietary
• High cost
• Lack of standardization
→ Solution : Using Open Source software implementing well-known standards
• Some problems still penalize Open Source solutions:• Maintenance and compatibility problems due to fast update
• Lack of user-friendly interfaces
• Lack of technical support
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
20
Web2GIS
• Our original solution: Web2GIS• Spatial database conception environment centralized on a web
server
• No need of particular tools on client, just a web browser
• Adapted to a large panel of users
• Spatial data producers, spatial database designers, spatial data users…
• Giving priority to Open Source products and international standards
• Apache, Php, PostGIS, MapServer…
• ISO/TC 211 (19 1..), OGC…
• In the philosophy of WEB 2.0
• « Web 2.0 is the business revolution in the computer industry caused by the move to the internet as platform… »
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
21
The 5 modules of Web2GIS
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
22
Web2GIS – Feature Cataloguing Module
• Goal:
• Generate Feature Catalogues for data producer communities
whishing to describe their specifications
• ISO/TC 211 – 19110 : Methodology for feature cataloguing
• Metabase model is inherited from the norm
• More important purpose than just a textual description
• Reflection on the concept of object
• UML design of associations
• Reflection on the concept of cardinality
• Possibility to reuse associations during conceptual modelling
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
23
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
24
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
25
Web2GIS – Conceptual Modelling Module
• Goal:• Offering to the user a conceptual data model generator
enabling to deal with specific applications from scratch or from one or several Feature Catalogues
• UML has been chosen as formalism• It’s based on a metamodel expressed in UML
• UML can be extended
• Metabase model is based on UML metamodel and spatio-temporal extensions• ISO 19109 (Rules for application schema) and 19107 (Spatial
schema)
• Topological constraints based on (enriched) CONGOO concepts
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
26
Concepts taken into account
thanks to the notion of package
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
27
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
28
Web2GIS – Spatial Databases Implementation module
• Goal:
• Allowing to generate the schema of a spatial database from one
or several UML models and to load data into the tables of this
database
• The « Case tool » part of Web2GIS
• Automatic generation of spatial databases
• Data Loading
• Spatial data:
• Shapefiles
• Text files (geometry column in WKT)
• Non spatial data:
• Text files
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
29
Implementation module
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
30
Data loading in a temporary database
Data loading in the
final database
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
31
Web2GIS – Cartographic Module
• Goal:
• Allowing an end user to visualize and to carry on spatial queries
through a cartographic interface
• 3 types of spatial data
• PostGIS spatial tables
• WMS
• WFS
• Functionalities:
• zoom, panning, object identification, classification on field
values, links between POSTGIS tables…
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
32
Web2GIS – Privileges Management Module
• Goal:• Allowing a project manager to manage efficiently users and
privileges for protecting users developments
• Registration needed before the first use• A valid email address is needed
• Users give a username and password
• A user receives full privileges on his developments and may provide access to other users• 3 levels of privileges
• Basic: reading
• Large: reading and edition
• All: reading, edition, addition/deletion and privileges management
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J-P. Donnay – P. Hallot – F. Laplanche EuroSDR ‘07
Qualitative Spatio-Temporal Reasoning
& Spatial Database DesignUnit of Geomatics
33
Web2GIS - Prospects
• Reports generators
• For Feature catalogue and conceptual modelling modules
• A metadata module
• Customization of proposed generic profiles (UML models) to
generate new meta-database
• Metadata publication and sharing of spatial data
• Dealing with the temporal dimension
• For conceptual modelling and implementation modules
• Dealing with the third dimension and integration of
works on 3D data acquisition