An efficient block-based fragile watermarking system for tamper localization and recovery

Venkata Gopal Edupuganti, Frank Y. Shih, I. Cheng Chang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this paper we present an efficient block-based fragile watermarking system for tamper localization and recovery of images. We apply the Cyclic Redundancy Checksum (CRC) to authenticate the feature of a block stored in a pair of mapping blocks. The proposed scheme localizes the tampered area irrespective of the gray value, and the detection strategy is designed in such a way to reduce false alarms. It can be applied on grayscale and color images. We conduct malicious attacks using different cropping patterns, sizes, and shapes. Experimental results show that the proposed system outperforms the existing schemes in terms of the recovery rate of modified blocks, the support against the vector quantization attack, the localization of the tampered area, and the reduction of false alarms.

Original languageEnglish (US)
Pages (from-to)257-267
Number of pages11
JournalIntelligent Automation and Soft Computing
Volume17
Issue number2
DOIs
StatePublished - Jan 2011

All Science Journal Classification (ASJC) codes

  • Software
  • Theoretical Computer Science
  • Computational Theory and Mathematics
  • Artificial Intelligence

Keywords

  • Cyclic redundancy checksum
  • Digital watermarking
  • Dual recovery
  • Tamper localization
  • Vector quantization

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