3D Gray Level Moment Invariants: A Novel Shape Representation

3D moment invariants are traditionally based on region characteristics and the location of every pixel point, this will cause high calculation cost. In this paper, a novel shape representation named 3D gray level moment invariants is constructed. Some properties of the new representation including the independence of the translation, scaling and rotation transforms are proved. Experiments indicate an encouraging high recognition rates without reducing the recognition performance compared with traditional methods.