Retrieval Method for 3D Object Models based on Scale, Shift and Rotation-Invariant Graphical Feature

摘要

We propose a new retrieval method for 3D object models. The method is based on our scale, shift and rotation-invariant graphical feature defined on every pair of polygons in each of the polygonal object. The graphical feature shows the angle between the polygon pair, the relative distance between the gravity points and the relative gross area of the polygon pairs with each angle and distance. Our graphical feature is also robust to the variations of preciseness of polygonal approximation as well as size of the polygonal patch. We have examined our feature in 3D object model retrieval from 2,500 objects. The precision ratio and recall ratios are 71.5% and 61.4% for the best twenty candidates, respectively.