Composite Signature Based Watermarking for Fingerprint Authentication

Abstract

Digital watermarking is a technology to hide information in digital media. We extend the digital watermarking technique Phasemark(trademark), originally developed solely for image authentication, to biometrics to assist in forensic analysis. Using a signature extracted from the Fourier phase of the original image, we hide an encoded signature back into the original image forming a watermarked image. The hiding occurs in the Fourier transform frequency domain. The detection process computes the Fourier transform of the watermarked images, extracts the embedded signature and then correlates it with a calculated signature. Various correlation metrics determine the identity degree of biometric authentication. We show how a composite filter can be used in conjunction with Phasemark(trademark) for robust authentication of fingerprints.

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Document Details

Document Type
Technical Report
Publication Date
Aug 09, 2005
Accession Number
ADA462186

Entities

People

  • Farid Ahmed
  • Ira S. Moskowitz

Organizations

  • The Catholic University of America

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Authentication
  • Biometric Security
  • Biometrics
  • Complex Numbers
  • Composite Materials
  • Computer Access Control
  • Detection
  • Detectors
  • Discrete Fourier Transforms
  • Fingerprints
  • Frequency
  • Identification
  • Military Research
  • Numbers
  • Security
  • Statistics
  • Training

Fields of Study

  • Computer science

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