Matching three-dimensional objects using a relational paradigm

摘要: Abstract A relational model for describing three-dimensional objects has been designed and implemented. The model, which provides a rough description to be used at the top level of hierarchy objects, was initial matching attempts on an unknown object. Each is in terms set simple parts Simple can sticks (long, thin parts), plates (flat, wide parts) blobs (parts that have three significant dimensions). relations include attribute-value table global properties object, parts, binary connection support relationships, ternary parallel perpendicular relationships constraints. An important use characterize similarity differences between objects. Toward this end, we defined measure object models feature similarity, based only Euclidean distance tables. In series computer tests, compare results using two different measures conclude much more powerful than should when grouping database fast access.