An algorithm to determine the directional relationship between arbitrarily-shaped polygons in the plane

Direction as a spatial object: a summary of results

Proceedings of the 6th ACM international symposium on Advances in geographic information systems

Metric details for natural-language spatial relations

ACM Transactions on Information Systems (TOIS)

A New Way to Represent the Relative Position between Areal Objects

IEEE Transactions on Pattern Analysis and Machine Intelligence

Topological relations between fuzzy regions

SAC '97 Proceedings of the 1997 ACM symposium on Applied computing

Uncertainty handling in spatial relationships

SAC '00 Proceedings of the 2000 ACM symposium on Applied computing - Volume 1

Visual query and analysis tool of the object-relational GIS framework

Proceedings of the ninth international conference on Information and knowledge management

Processing object-oientation-based direction queries: a summary of results

Proceedings of the 8th ACM international symposium on Advances in geographic information systems

Cardinal relations between regions with a broad boundary

Proceedings of the 8th ACM international symposium on Advances in geographic information systems

Algorithms for Hierarchical Spatial Reasoning

Geoinformatica

An Object Model of Direction and Its Implications

Geoinformatica

Qualitative representation of spatial knowledge in two-dimensional space

The VLDB Journal — The International Journal on Very Large Data Bases - Spatial Database Systems

Object-Based Directional Query Processing in Spatial Databases

IEEE Transactions on Knowledge and Data Engineering

A fuzzy set model of approximate linguistic terms in descriptions of binary topological relations between simple regions

Applying soft computing in defining spatial relations

The House Is North of the River: Relative Localization of Extended Objects

COSIT 2001 Proceedings of the International Conference on Spatial Information Theory: Foundations of Geographic Information Science

A Graded Approach to Directions between Extended Objects

GIScience '02 Proceedings of the Second International Conference on Geographic Information Science

Good NEWS: partitioning a simple polygon by compass directions

Proceedings of the nineteenth annual symposium on Computational geometry

2D Topological and Direction Relations in the World of Minimum Bounding Circles

IDEAS '99 Proceedings of the 1999 International Symposium on Database Engineering & Applications

Understanding location descriptions in the LEI system

ANLC '94 Proceedings of the fourth conference on Applied natural language processing

Fuzzy semantics for direction relations between composite regions

Information Sciences—Informatics and Computer Science: An International Journal

Cardinal directions between spatial objects: the pairwise-consistency problem

Information Sciences—Informatics and Computer Science: An International Journal

Computing and Managing Cardinal Direction Relations

IEEE Transactions on Knowledge and Data Engineering

A Quantitative Description Model for Direction Relations Based on Direction Groups

Geoinformatica

Spatial graph grammars for graphical user interfaces

ACM Transactions on Computer-Human Interaction (TOCHI)

Object localization based on directional information case of 2D vector data

GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems

Multi-level Topological Relations Between Spatial Regions Based Upon Topological Invariants

Geoinformatica

A Family of Directional Relation Models for Extended Objects

IEEE Transactions on Knowledge and Data Engineering

A Statistical Model for Directional Relations Between Spatial Objects

Geoinformatica

A model for describing and composing direction relations between overlapping and contained regions

Information Sciences: an International Journal

Formalizing natural-language spatial relations between linear objects with topological and metric properties

International Journal of Geographical Information Science

Spatial inference and similarity retrieval of an intelligent image database system based on object's spanning representation

Journal of Visual Languages and Computing

Specification and implementation of directional operators in a 3D spatial query language for building information models

Advanced Engineering Informatics

Deriving topological relations between regions from direction relations

Journal of Visual Languages and Computing

Integrated use of different content derivation techniques within a multimedia database management system

Journal of Visual Communication and Image Representation

A semantic and language-based representation of an environmental scene

Geoinformatica

A qualitative model for space

AAAI'90 Proceedings of the eighth National conference on Artificial intelligence - Volume 1

Unified pairwise spatial relations: an application to graphical symbol retrieval

GREC'09 Proceedings of the 8th international conference on Graphics recognition: achievements, challenges, and evolution

A visibility and spatial constraint-based approach for geopositioning

GIScience'10 Proceedings of the 6th international conference on Geographic information science

Optimizing regular edge labelings

GD'10 Proceedings of the 18th international conference on Graph drawing

A splitting line model for directional relations

Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems

Description of combined spatial relations between broad boundary regions based on rough set

IDEAL'06 Proceedings of the 7th international conference on Intelligent Data Engineering and Automated Learning

Cardinal directions between complex regions

ACM Transactions on Database Systems (TODS)

Probability issues in locality descriptions based on Voronoi neighbor relationship

Journal of Visual Languages and Computing

Reasoning With Topological And Directional Spatial Information

Computational Intelligence

Plane-based object categorisation using relational learning

Machine Learning