Qualitative reasoning about relative direction of oriented points
نویسندگان
چکیده
منابع مشابه
Qualitative reasoning about relative direction of oriented points
An important issue in qualitative spatial reasoning is the representation of relative directions. In this paper we present simple geometric rules that enable reasoning about the relative direction between oriented points. This framework, the oriented point algebra OPRAm, has a scalable granularity m. We develop a simple algorithm for computing the OPRAm composition tables and prove its correctn...
متن کاملQualitative Spatial Reasoning about Oriented Points
We present a qualitative positional calculus which uses oriented points as basic entities. In contrast to often-used simple points, we consider objects that have an intrinsic direction. Having an intrinsic orientation is an important property of natural objects.
متن کاملQualitative Reasoning about Relative Direction on Adjustable Levels of Granularity
An important issue in Qualitative Spatial Reasoning is the representation of relative direction. In this paper we present simple geometric rules that enable reasoning about relative direction between oriented points. This framework, the Oriented Point Algebra OPRAm, has a scalable granularity m. We develop a simple algorithm for computing the OPRAm composition tables and prove its correctness. ...
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Qualitative spatial reasoning (QSR) abstracts metrical details of the physical world. The two main directions in QSR are topological reasoning about regions and reasoning about orientations of point configurations. Orientations can refer to a global reference system, e.g. cardinal directions or instead only to relative orientation, e.g. egocentric views. Reasoning about relative orientations po...
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A class of novel spatial relation, internal cardinal direction (ICD) relation, is introduced and discussed. Applying ICD-9 model, the characteristics and the simplification rule of ICD relations are discussed at first. Then the ICD related qualitative spatial reasoning is discussed in a formal way. Four composition cases are presented. They are 1) composing two nesting ICD relations and composi...
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ژورنال
عنوان ژورنال: Artificial Intelligence
سال: 2012
ISSN: 0004-3702
DOI: 10.1016/j.artint.2011.10.003