Color image encryption based on interference and virtual optics

C. J. Tay, C. Quan, Wen Chen, Y. Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

46 Citations (Scopus)


We propose two approaches to encrypt color images based on interference and virtual optics. In the first method, a color image is first decomposed into three independent channels, i.e., red, green and blue. Each channel of the input image is encrypted into two random phase-only masks based on interference. In the second method, a color image is first converted into an image matrix and a color map, and only the image matrix is encrypted into random-phase masks based on interference. After the phase masks are retrieved, a concept based on virtual optics is further applied to enhance the security level. Numerical simulations are demonstrated to show the feasibility and effectiveness of the proposed methods.
Original languageEnglish
Pages (from-to)409-415
Number of pages7
JournalOptics and Laser Technology
Issue number2
Publication statusPublished - 1 Mar 2010
Externally publishedYes


  • Color image encryption
  • Fractional Fourier transform (FRFT)
  • Interference

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Color image encryption based on interference and virtual optics'. Together they form a unique fingerprint.

Cite this