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Reducing Maintenance Complexity of User-centric Web Portrayal Services

Reducing Maintenance Complexity of User-centric Web Portrayal Services. An alternate approach to web- based 3D Geodata Portrayal Authors : Simon Thum and Michel Krämer. Simon Thum

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Reducing Maintenance Complexity of User-centric Web Portrayal Services

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  1. Reducing Maintenance Complexity of User-centric Web Portrayal Services An alternateapproachto web-based 3D GeodataPortrayal Authors: Simon Thum and Michel Krämer Simon Thum Fraunhofer-InstitutfürGraphischeDatenverarbeitungIGDFraunhoferstraße 564283 DarmstadtTel +49 6151 155 – 581simon.thum@igd.fraunhofer.de www.igd.fraunhofer.de

  2. Simon Thum: Reducing Maintenance Complexity ... • Motivation • Our Approach • Whereitfits in • Whyit‘s different • Specificconstraints • Our Solution • Characteristics • Outlook • Comparison • Applicationopportunities

  3. MOTIVATION Simon Thum: Reducing Maintenance Complexity ...

  4. MOTIVATION Simon Thum: Reducing Maintenance Complexity ...

  5. Portrayalcomplexity Simon Thum: Reducing Maintenance Complexity ...

  6. User-centricportrayal • More a-priori knowledge in theportrayalservice • Lessclient-sidecontrol • Run-time Overhead • Requiresknowndatasource-wideidentifiers • Bettermatchesspecificuserdemands • Lessknowledge in theclient • Increasedabilitytoadapttoacquisitionidiosyncrases • Heterogenous, non-othogonalsourcedata • Does not depend on spatialorsemanticpartitioning (overlap) • Less/noneedforpreprocessing • Alwaysup-to-date

  7. Data flow Source Select Display Element G. Render & Display End-User Data Specialist Simon Thum: Reducing Maintenance Complexity ...

  8. Scenarios • A Scenario isthecentralunit in ourapproach • Maptoactualusecases • More technically: Coincidingportrayalrequirements • Definedas a setofportrayalrulesandtheirparameters • Constraintheanticipatedportrayalproblemswemightneedtosolve • Enablethe IR approach Simon Thum: Reducing Maintenance Complexity ...

  9. Decomposition Portrayal Scenario Requirements Information Items Information Item Representations Simon Thum: Reducing Maintenance Complexity ...

  10. Intermediate Representation Explosion ofinterdependencies

  11. Intermediate Representation The IR iscanonicalinformationrequiredtosolveportrayalproblems

  12. Data heterogenityor „Fitness forPortrayal“ Frominformation item representationsto an IR item Simon Thum: Reducing Maintenance Complexity ...

  13. Summary • Knowledgeaboutdatasourcesisshiftedclosertothem • Client needslessknowledge • Scalablewayto express andsolveportrayalproblems • Achievedbyseparatingtheconcernofheterogenity • Lessreliance on preprocessing • The approachhasbeentestedatthelocallevel • but shouldscalenicely • Doesn‘t fit well withclient-drivenapproaches Simon Thum: Reducing Maintenance Complexity ...

  14. Thanksforyourattention! May I answerquestions? Simon Thum Fraunhofer-InstitutfürGraphischeDatenverarbeitungIGDFraunhoferstraße 564283 DarmstadtTel +49 6151 155 – 581simon.thum@igd.fraunhofer.de www.igd.fraunhofer.de

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