Research on Feature Recognition Through Model Decomposition and Symbol Matching
Yun Liu · Mechanical Science and Technology · 2000
A feature recognition method for annular or catenary graph was proposed, which is based on decomposition of model and matching of symbol. The graph is firstly decomposed to sub graph by decomposition rule of convex curves and rule of pairs of convex co linear elements ,then sub graph and feature definition is transformed to string by introducing an angle based coding rule. Hereto ,the form feature in graph could be identified by symbol matching. This method possesses invariability in geometrical transforming and have been used to feature recognition system for drawing of rock bit.