The growing availability of counterfeit drugs has greatly increased the need for track and trace of drugs through the supply chain. Although numerous methods such as tagging, labelling, and marking are available for identifying and authenticating drug packages, none are available for the contents. A method is presented for directly identifying individual medicine tablets without any markings or additives. A lighting system is used to capture an image of a tablet’s micro-scale surface bumps, which is then used as the "fingerprint" of that tablet. Since plain unmarked tablets have no macroscopic (humanvisible) feature, the orientation of the fingerprint image cannot be controlled during capture. Tablets are thus identified by geometric invariant image matching using Fourier-Mellin phase features. Experimental results show that the proposed image matching algorithm enables accurate and robust identification of numerous plain tablets.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.