Structural approach to extraction and analysis of 3D features representing machining operations

Shape languages introduced in Jakubowski, Information Sciences 39 (1986), 129-151 and 50 (1990), 35-71 are extended to an attributed model and used for a recognition of fuzzy shape features. The parsable family of ETPL (k) graph languages (Flasiński, Pattern Recognition 26 (1993), 1-16, Theoretical Computer Science 201 (1998), 189-231) is applied for a semantically-dependent analysis of solids modelled with shape features.