It is also flexible: it permits us to implement different repair paradigms (we describe two in the paper). Our approach is conceptually simple and easy to implement as it is mostly based on labelling triangles. ![]() We present a novel approach, based on the use of a constrained triangulation, to automatically repair invalid polygons. Automated repair algorithms can be considered as interpreting ambiguous or ill-defined polygons and returning a coherent and clearly defined output (the definition of the international standards in our case). ![]() We investigate in this paper algorithms to automatically repair a single polygon. Although the validation of a single GIS polygon can be considered as a solved issue, the repair of an invalid polygon has not received much attention and is still in practice a semi-manual and time-consuming task.
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