Techniques, systems and methods for obtaining biometric signatures and identification are described. Broadly stated, embodiments of the present invention utilize specified geometric principles t provide means for accurate biometric identification using projective invariant features of a subregion of...http://www.google.es/patents/US20070274574?utm_source=gb-gplus-sharePatente US20070274574 - Biometric signatures and identification through the use of projective invariants
Biometric signatures and identification through the use of projective invariants
