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Opto-digital image encryption by using Baker mapping and 1-D fractional Fourier transform

  • Chinese Academy of Sciences
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

We present an optical encryption method based on the Baker mapping in one-dimensional fractional Fourier transform (1D FrFT) domains. A thin cylinder lens is controlled by computer for implementing 1D FrFT at horizontal direction or vertical direction. The Baker mapping is introduced to scramble the amplitude distribution of complex function. The amplitude and phase of the output of encryption system are regarded as encrypted image and key. Numerical simulation has been performed for testing the validity of this encryption scheme.

Original languageEnglish
Pages (from-to)224-229
Number of pages6
JournalOptics and Lasers in Engineering
Volume51
Issue number3
DOIs
StatePublished - Mar 2013

Keywords

  • Chaotic mapping
  • Cryptography
  • Scrambling operation

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