عنوان مقاله [English]
Mobile devices are widely used for providingpeople with needed information anytime and anywhere. One of themost important mobile applications is related to the navigation andother GIS capabilities. The development of mobile applications needs tobe adapted with the special features and limitations of thiscomputing environment. Looking in this direction, we present a context-aware mobile map representation which used the dual graph ofstreet networks for automatic simplification and generalization of streets invarious contexts. For this purpose, after the introduction and selectionof context factors, the degree of dual graph nodes areused for automatic generation of maps with fewer details. Wewill show that we could increase the capability and efficiencyof mobile GISs by using dual graphs, because by usingthat, the structure and the topology of streetnetwork could be maintained in generalization process.The proposed approachis validated by a case study applied to a regionof Tehran city. The case study clearly showed the benefits of usingdual graphsin mobile map applications.
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