Qualitative Representation of Spatial Knowledge
Qualitative Representation of Spatial Knowledge
Using Orientation Information for Qualitative Spatial Reasoning
Proceedings of the International Conference GIS - From Space to Territory: Theories and Methods of Spatio-Temporal Reasoning on Theories and Methods of Spatio-Temporal Reasoning in Geographic Space
Modeling and Computing Ternary Projective Relations between Regions
IEEE Transactions on Knowledge and Data Engineering
Semantics of collinearity among regions
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems
SC'04 Proceedings of the 4th international conference on Spatial Cognition: reasoning, Action, Interaction
Natural Language Meets Spatial Calculi
Proceedings of the international conference on Spatial Cognition VI: Learning, Reasoning, and Talking about Space
Projective Relations on the Sphere
ER '08 Proceedings of the ER 2008 Workshops (CMLSA, ECDM, FP-UML, M2AS, RIGiM, SeCoGIS, WISM) on Advances in Conceptual Modeling: Challenges and Opportunities
Ensuring semantic spatial constraints in virtual environments using UML/OCL
Proceedings of the 17th ACM Symposium on Virtual Reality Software and Technology
Referring expressions in location based services: the case of the 'opposite' relation
ER'11 Proceedings of the 30th international conference on Advances in conceptual modeling: recent developments and new directions
Integrating semantic directional relationships into virtual environments: a meta-modelling approach
EGVE - JVRC'11 Proceedings of the 17th Eurographics conference on Virtual Environments & Third Joint Virtual Reality
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This paper presents a model for positional relations among bodies of arbitrary shape in three dimensions. It is based on an existing model for projective relations among regions in two dimensions. The motivation is to provide a formal qualitative spatial relations model for emerging 3D applications. Two sets of relations are defined: ternary projective relations based on the concept of collinearity between a primary object and two reference objects and quaternary projective relations based on the concept of coplanarity between a primary object and three reference objects. Four sets of JEPD relations are defined for points and bodies in R3.