Computational Perspectives on Map Generalization
Geoinformatica
Topological Invariants for Lines
IEEE Transactions on Knowledge and Data Engineering
Topological Error Correcting in GIS
SSD '97 Proceedings of the 5th International Symposium on Advances in Spatial Databases
Algorithms for Reporting and Counting Geometric Intersections
IEEE Transactions on Computers
A refined line-line spatial relationship model for spatial conflict detection
ER'05 Proceedings of the 24th international conference on Perspectives in Conceptual Modeling
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In the process of topographic map updating, spatial conflicts (inconsistency) between rivers and contours may be created. This project studies the particularity and complexity of the relationships between rivers and contours, and develops a method for automatic detection of the spatial conflicts between them. This method consists of a refined descriptive spatial model (called a topological chain), an algorithm for the computation of spatial relations, and a set of rules for the determination of spatial conflicts. In the spatial relation model, the topological relationships, order relationships, and metric relationships are integrated to describe the line-line spatial relationships. The rules are derived from the natural relations between rivers and contours in the real world. The effectiveness of this method has been verified by using the national 1:50 000 topographic map databases. An accuracy of 91% has been achieved.