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A new method for qualitative shape recognition and matching of objects in designs is presented in this paper. The approach consists of a reference-points information approach of the qualitative description of shapes considering qualitatively their angles, relative side length, concavities and convexities, and types of curvatures of the boundary. The shapes(More)
Our approach describes any digital image qualitatively by detecting re-gions/objects inside it and describing their visual characteristics (shape and colour) and their spatial characteristics (orientation and topology) by means of qualitative models. The description obtained is translated into a description logic (DL) based ontology, which gives a formal(More)
Space and time has been integrated into three qualitative models in this article: a qualitative motion model which integrates topology and time, a qualitative velocity model in 2-D and a qualitative velocity model in 3-D. The integration has been accomplished thanks to the definition of an approach with the following three steps: (1) the definition of the(More)