Fragile image watermarking using a gradient image for improved localization and security

  • Authors:
  • Shan Suthaharan

  • Affiliations:
  • Department of Mathematical Science, University of North Carolina at Greensboro, P.O. Box 26170, Greensboro, NC

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2004

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Abstract

A fragile watermarking algorithm for image authentication and tamper detection is proposed. It uses a gradient image and its structure to achieve localization and security requirements. It provides superior localization with greater security against many attacks including vector quantization attack.