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OS MasterMap from Ordnance Survey (OS) is sourced from a detailed topographic database with Great Britain coverage. OS are conducting research into using this database for deriving cartographic products automatically. This paper presents details of research into automatically generalising the buildings and roads to OS 1:50 000 scale. The paper explains how the Agent system has been customised to define the behaviour of these cartographic features during generalisation. Descriptions are provided of the algorithms used in creating and generalising the different types of agent, which include urban areas, urban buildings, rural clusters, rural buildings and dual carriageways. It is demonstrated that triangulation and topology are essential elements of the described algorithms. The results from the research prototype are presented along with information on how they have been evaluated. The paper concludes with a discussion of what has been achieved so far and what remains to be implemented.
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