GI Standardization Overview

Transcription

1 Second workshop on the use of GIS/OGC standards in meteorology GI Standardization Overview 1 nicolas.lesage@ign.fr 12 Janvier 2009 Modèle TN

2 The goal of standardization According to decree number of 26 january 1984 related to the French Standardization system: «supply reference documents ( ) solutions to problems ( ) which arise repeatedly in interactions between partners ( )» A specification activity that aims at reaching a consensus. 2

3 Official standardization Organisms International Electrotechnical Commission International Telecommunication Union Telecom Electronical & Electricity ITU ISO IEC AFNOR UTE/CEF ETSI CEN CENELEC 3 European Committee for Electronical Standardization European Telecommunications Standards Institute

4 Standards and regulations «De jure» standards Are the result of a consensual specification process Some people distinguish the standards released from official standardisation bodies (ISO, CEN, AFNOR,..) from those released by other bodies (W3C, OGC, OASIS, ) «De facto» standards Specifications which are not the result of a consensual process,, but are more or less widely used Regulations,, Directives et laws «De jure» standards are tools for regulation. Laws may enforce the applicability of standards 4

5 Domain Communities GI Standardization Overview DGIWG WMO ISO CEN AFNOR GI Standardisation OGC ISO/TC 211 CEN/TC 287 INSPIRE Regulation CN IGS National law 5 OASIS W3C General standardisation bodies French OGC Forum Dassault IGN CNIG BRGM Ministries

6 OGC & ISO/TC 211 The new trend for GI standardization GI is standardized out of any context from ISO 19101, Geographic Information Reference Model GI is information with geospatial specificity GI is no more standardized in specific exchange contexts GI Standards are based on information technologies UML, XML HTTP, SOAP, protocols Standards are modular and extensible from ISO 19101, Geographic Information Reference Model GI standardization is international and domain independent All the actors can be involved in the standardization process 6 GI can still be transferred, but can now be transmitted Interconnected network Standardization of geospatial services

7 19131 (product specifications) ISO/TC 211 standards Overview (GML) (dictionary) (registration) & (reference model) (application schemas) (geodetic codes) & (metadata) (services) & (georeferencing) & (WMS) (UML profile) (spatial) (coverage) (time) (XML for metadata) (terminology) (feature cat.) (sensor) (portrayal) & (quality) (quality measures) (compliance and testings) (profiles)

8 OGC Web Services Data Repositories WCS WFS Standardized Web Services Data Access Services Application Servers, Portals Clients WMS Portrayal Services General public service Web browsers WPS Processing Services Domain specific service GI Clients CS-W Cataloguing Services 8 GML TML FE SE SLD CityGML KML

9 What are the respective roles of OGC and ISO/TC 211? Equivalent or shared foundations and a managed overlap There is a stronger focus on abstract specifications in ISO/TC 211 There is a stronger focus on implementation specifications (services, ) in OGC The Joint Advisory Group (JAG) of OGC and ISO/TC 211 ensures the necessary coordination The main differences are in terms of business process 9

10 Plan OGC around the world Do OGC Organization Committees DWG Specification Program Staff Board SWG OAB 10 Interoperability Program Act IP Management team Team Engine Compliance & Testing CITE SC Check

11 Certification Certification refers to the confirmation of certain characteristics of an object, person, or organization Certification is not a technical issue but a matter of responsibility There is a difference between testing an implementation and attesting its conformity Recognition of the community is a prerequisite May require accreditation bodies 11 Certification, standardization and regulation Standards aim at expressing clearly the characteristics to be met Certification plays an important role concerning the implementation of standards, especially when there are concerned by regulations This promotes the use of the standards Conformity is a fundamental aspect of regulations

12 Conclusion The adaptation of the new technologies of information and communication has been widely promoted by OGC and ISO/TC 211 The GI standards structure the geospatial infrastructures emerging through regulations Interoperability is not only a technical matter Standardization, Regulation and Certification are three organizational tools to promote interoperability Interoperability is finally the responsibility of GI Communities organized locally, nationally, regionally, internationally, and/or by domain 12