New forms of shape invariants from elliptic fourier descriptors

摘要

New forms of shape invariants are derived, using matrix trace operators, for pattern recognition. These invariants form a non-redundant set, have more straightforward and understandable geometric meanings, and require fewer computations. They are independent of the shape rotation and translation. These invariants are interpreted geometrically and compared to those defined by Grandlund. Possible utilizations for pattern recognition are discussed.