Rule Based Selection of 2D Urban Area Map Objects
The purpose of cartographic generalization is to represent a
particular situation adapted to the needs of its users, with
adequate legibility of the representation and perceptional
congruity with the real situation. In this paper, a simple approach
is presented for the selection process of building ground plans
that are represented as 2D line, square and polygon segments. It
is based on simple selection process from the field of computer
graphics. It is important to preserve the overall characteristics of
the buildings; the lines are simplified with regard to geometric
relations. These characteristics allow for an easy recognition of
buildings even on small displays of mobile devices. Such
equipment has become a tool for our everyday life in the form of
mobile phones, personal digital assistants and GPS assisted
navigation systems. Although the computing performance and
network bandwidth will increase further, such devices will
always be limited by the rather small display area available for
communicating the spatial information. This means that an
appropriate transformation and visualization of building data as
presented in this paper is essential.
Keywords: Cartographic Generalization, GIS, Map, Object,
Selection
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