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  1. Article

    Open Access

    Building pattern recognition in topographic data: examples on collinear and curvilinear alignments

    Building patterns are important features that should be preserved in the map generalization process. However, the patterns are not explicitly accessible to automated systems. This paper proposes a framework an...

    **ang Zhang, Tinghua Ai, Jantien Stoter, Menno-Jan Kraak in GeoInformatica (2013)

  2. No Access

    Chapter

    Fuzzy Approach for Integrated Coastal Zone Management

    Tao Cheng, Martien Molenaar, Alfred Stein in Remote Sensing and Geospatial Technologies… (2009)

  3. No Access

    Article

    Spatial object aggregation based on data structure, local triangulation and hierarchical analyzing method

    This paper focuses on the methods and process of spatial aggregation based on semantic and geometric characteristics of spatial objects and relations among the objects with the help of spatial data structure (...

    Liu Yaolin, Martien Molenaar, Menno-Jan Kraak in Geo-spatial Information Science (2002)

  4. No Access

    Chapter

    Remote sensing and geographical information systems

    Sytze de Bruin, Martien Molenaar in Spatial Statistics for Remote Sensing (2002)

  5. No Access

    Article

    Frameworks for generalization constraints and operations based on object-oriented data structure in database generalization

    The constraints and the operations play an important role in database generalization. They guide and govern database generalization. The constraints are translation of the required conditions that should take ...

    Liu Yaolin Ph D candidate, Martien Molenaar, Al Tinghua in Geo-spatial Information Science (2001)

  6. No Access

    Article

    Diachronic Analysis of Fuzzy Objects

    This paper presents a method to monitor the behavior of fuzzy spatial objects through time. The method consists of two steps. Firstly the spatial extents of objects are determined at several sequential epochs....

    Tao Cheng, Martien Molenaar in GeoInformatica (1999)

  7. No Access

    Chapter and Conference Paper

    Ontology-Based Geographic Data Set Integration

    In order to develop a system to propagate updates we investigate the semantic and spatial relationships between independently produced geographic data sets of the same region (data set integration). The goal o...

    Harry T. Uitermark, Peter J. M. van Oosterom in Spatio-Temporal Database Management (1999)

  8. No Access

    Chapter and Conference Paper

    Identification of fuzzy objects from field observation data

    This paper introduces the concept of fuzzy objects for modeling natural phenomena measured by field observation data. The propagation of uncertainties resulting from stochastic data errors and classification f...

    Cheng Tao, Martien Molenaar, Theo Bouloucos in Spatial Information Theory A Theoretical B… (1997)

  9. No Access

    Chapter

    Discrete spatial models for fuzzy geographical objects

    The representation of objects and their relationships in a geo-information system will be in the form of data that should be structured according to some data base concept The map** of an original terrain de...

    Martien Molenaar in Progress in Industrial Mathematics at ECMI 94 (1996)

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    Chapter and Conference Paper

    Topological querying of multiple map layers

    This paper first recaptures why multiple map layers are required in Geographic Information Systems. The two main motivations are: flexibility in data modeling, and efficient processing of data. In order to mak...

    Sylvia de Hoop, Peter van Oosterom in Spatial Information Theory A Theoretical B… (1993)

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    Chapter and Conference Paper

    Formal Data Structures and Query Spaces

    Geo-information systems (GIS) are a special class of information systems, they handle data referring to objects and processes at the earth surface. Geometry is the important aspect of these data, setting GIS a...

    Martien Molenaar in Konzeption und Einsatz von Umweltinformationssystemen (1992)