User-friendly image sharing using polynomials with different primes

  • Authors:

  • Ching-Nung Yang;Kun-Hsuan Yu;Rastislav Lukac

  • Affiliations:

  • CSIE Department, National Dong Hwa University, Taiwan;CSIE Department, National Dong Hwa University, Taiwan;The Edward S. Rogers Sr. Department of ECE, University of Toronto, Toronto, Ontario, Canada M5S 3G4

  • Venue:
  • International Journal of Imaging Systems and Technology
  • Year:
  • 2007

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Abstract

Recently, Thien and Lin proposed a user-friendly (k, n)-threshold scheme which employs Lagrange interpolation to produce shadow images representing a shrunken version of the original image. In this paper, we introduce a new framework which uses more (k - 1)-degree polynomials with different primes to enhance the functionality of the user-friendly (k, n)-threshold framework and obtain more effective performance for large k. Since the proposed framework significantly reduces reconstruction errors compared to the previously published user-friendly schemes, it is suitable for modern visual communication applications where features such as distributed trust, secure transmission and storage, fault tolerance, and high-quality image reconstruction are required. © 2007 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 17, 40–47, 2007