A fragile watermarking algorithm for hologram authentication

Chau Jern Cheng, Wen Jyi Hwang, Han Yi Zeng, Yu Chih Lin

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A fragile watermarking algorithm for hologram authentication is presented in this paper. In the proposed algorithm, the watermark is embedded in the discrete cosine transform (DCT) domain of a hologram. The watermarked hologram is stored in spatial domain with finite precision level. By enhancing the precision for storing the watermarked hologram pixels, the distortion produced by the proposed watermarking scheme can be lowered. While providing high perceptual transparency, the proposed algorithm also attains high performance detection to delivery errors and malicious tampering. Experimental results reveal that the proposed algorithm can be used as an effective filter for blocking polluted or tampered holograms from 3D magnitude and/or phase reconstruction.

Original languageEnglish
Article number6690223
Pages (from-to)263-271
Number of pages9
JournalIEEE/OSA Journal of Display Technology
Volume10
Issue number4
DOIs
Publication statusPublished - 2014 Apr 1

Keywords

  • 3D display
  • hologram
  • image authentication
  • watermarking

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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