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Journal Article: BibTeX citation key:  Gottfried2008
B. Gottfried, "Representing Short-Term Observations of Moving Objects by a Simple Visual Language.", Journal of Visual Languages and Computing, vol. 19, iss. 3, pp. 321–342, 2008.
Added by: Deleted user 2008-05-08 17:48:47
Categories: AG-KI, Digitale Wirklichkeit, IS
Keywords: Motion Pattern, Qualitative Spatial Reasoning
Creators: Gottfried
Collection: Journal of Visual Languages and Computing

Peer reviewed
Number of views:  730
Popularity index:  32.52%

In a variety of dynamical systems, formations of motion patterns
occur. Observing colonies of animals, for instance, for the
scientist it is not only of interest which kinds of formations
these animals show, but also how they altogether move around. In
order to analyse motion patterns for the purpose of making
predictions, to describe the behaviour of systems, or to index
databases of moving objects, methods are required for dealing
with them. This becomes increasingly important since a number of
technologies have been devised which allow objects precisely to
get traced. However, the indeterminacy of spatial information in
real world environments also requires techniques to approximate
reasoning, for example, in order to compensate for small and
unimportant distinctions which are due to noisy
measurements. As a consequence, precise as well as coarse motion patterns have
to be dealt with.

A set of sixteen atomic motion patterns is proposed. On the one
hand, a relation algebra is defined on them. On the other hand,
these sixteen relations form the basis of a visual language using
which motion patterns can easily be dealt with in a diagrammatic
way. The relations are coarse but crisp and they allow imprecise
knowledge about motion patterns to be dealt with, while their
diagrammatic realisation also allow precise patterns to get
handled. While almost all approaches consider motion patterns
along arbitrary time intervals, this paper in particular focuses
on short-term motion patterns as we permanently observe them in
our everyday life.

The bottom line of the current work, however, is yet more general.
While it has been widely argued that it makes sense to use both
sentential and diagrammatic representations in order to represent
different things in the same system adequately (and hence
differently), we argue that it makes even sense to represent the
same things differently in order to grasp different aspects of
one and the same object of interest from different viewpoints. We
demonstrate this by providing both a sentential and a diagrammatic
representation for the purpose of grasping different aspects of
motion patterns. It shows that both representations complement
each other.
Added by: Deleted user

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