Title :
Authentication scheme using Walsh encoding of random patterns
Author :
Krukar, Richard ; Ahmed, Nasir ; Park, Daechul
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico Univ., Albuquerque, NM, USA
fDate :
8/1/1988 12:00:00 AM
Abstract :
A scheme is developed to help prevent the use of new generations of copying equipment to forge products. Computer images of three-dimensional reflective particle labels are encoded using the Walsh-Hadamard transform. An optimal quantizer and the encodings are then used to authenticate the labels
Keywords :
computerised picture processing; encoding; random processes; Walsh encoding; Walsh-Hadamard transform; authentication scheme; computer images; encodings; optimal quantizer; random patterns; three-dimensional reflective particle labels; Authentication; Cameras; Credit cards; Cryptography; Encoding; Forgery; Geometry; Light sources; Manufacturing; Public key;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
