Detecting Physical Defects: A Practical 2D-Study of Cracks and Holes
Torsten Hahmann, Michael Grüninger · 2009
Theoretical work on Qualitative Spatial Reasoning (QSR) is abundant, but the actual requirements of practical applications have been widely ignored. This paper discusses how ontolo-gies allow to compare different QSR formalisms with respect to definability of spatial concepts, which are taken from a real-world problem. We introduce the problem of detecting phys-ically defective parts (such as in manufacturing) and review which qualities are necessary for modeling these as QSR prob-lem. We show that – besides standard mereotopological con-cepts – a set of artifacts, especially cracks and holes, are of foremost importance in the domain of interest. However, most currently available region-based QSR approaches fail to distin-guish these. In the future, the proposed set of problem can be used to evaluate different QSR formalisms for their adequacy with respect to defining and distinguishing cracks and holes.