Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Multivolume work

Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [WA-1 KNOWLEDGE-BASED TECHNIQUES/ SYSTEMS FOR DATA FUSION]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: CIME2: A TOOLBOX FOR DEVELOPING EXPERT SYSTEMS IN THEMATIC MAPPING USING REMOTE SENSING AND GEOCODED DATA. Catherine Mering

Document type:: Multivolume work

Structure type:: Chapter

159 CIME2: A TOOLBOX FOR DEVELOPING EXPERT SYSTEMS IN THEMATIC MAPPING USING REMOTE SENSING AND GEOCODED DATA Catherine Mering L.I.A. O.R.S.T.O.M. 72-74 route d’Aulnay 93140 Bondy France ABSTRACT The traditional approach to the analysis of remotely sensed imagery has met with only limited acceptance. One possible cause is that the methods have generally be implemented directly from image processing algorithms and do not take into account contextual information coming from the thematic expertise: therefore the whole process cannot be completely reproduced. The aim of this work is not only to provide maps but to encode the whole process of building them up from remote sensing, geocoded data and ground-truth, according to expert knowledge and reasoning. In order to reproduce a mapping method one has to simulate the knowledge of an expert monitoring procedural-based data processing techniques. Therefore we have designed CIME2, which is a toolbox for developing expert systems in cartography using satellite images and geocoded data, such as a topographical data, DTM or illumination models. CIME2 is based on the simultaneous representation of this different know how: data processing techniques, geographical knowledge about physic and human characteristics of the area and more specialized knowledge such as altitudinal limits of vegetation and land use units. As the main purpose is to monitor and optimize the sequential activation of numerical treatment on remotely sensed and geocoded data, CIME2 provides the symbolic language for an expert to describe how to make a thematic map. The factual database of CIME consists in a hierarchy of objects that are pixels, regions (connected sets of pixels) and objects (sets of regions) described by numeric attributes provided by remotely sensed data (radiometry, vegetation index, textural index) and geocoded data (altitude, slope, illumination) and symbolic attributes that is the various elements of the taxonomy elaborated by the expert to produce the map. The procedural database consists in a hierarchy of numerical treatments described by symbolic attributes. The expert knowledge is represented as production rules providing contextual information and general control. With this toolbox, the expert writes a production system selecting appropriate data and algorithms to build a sequence of treatment on the data in order to produce the required map. He can build many sequences and select the best one according to a set of criterions such as minimization of ambiguity of classifications and the maximization of well classified pixels of training zones. CIME2 has been firstly utilized to produce a set of thematic maps of mountainous areas such as Nepal using MSS Landsat data, topographic data and an illumination model. But the techniques which has been developed could be generalized to other thematic mapping and other areas using database from different sources such as a predefined GIS and high resolution sensors such as SPOT and Thematic Mapper.

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fullscreen: Proceedings of the Symposium on Global and Environmental Monitoring (Part 1)

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