SCALE AND ROTATION INVARIANT OPTICAL ID TAGS FOR AUTOMATIC VEHICLE IDENTIFICATION AND AUTHENTICATION

In this paper, the authors present a method for obtaining scale and/or rotation invariant identification tags for achieving real time automatic vehicle identification (AVI) in transportation, homeland security, and inventory applications. The ID tags have an optical code containing double phase encrypted information for increasing security. Multiplexing and different topologies are used to encode the encrypted information in the ID tag to provide the desired distortion invariance. The paper describes in detail the double phase encryption and decryption procedure, the design of distortion invariant ID tags, and correlation-based signature verification. Numerical results are presented illustrating the performance of the ID tag system by identifying ID tags and rejecting false codes.

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01005587
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Oct 19 2005 2:03PM