Improvement of the signal-to-noise ratio of a double random phase encoding encryption system

Wei-Chia Su, Bor Wang, Ching Cherng Sun, Ming Wen Chang

Research output: Contribution to journalConference article


We investigate the tolerance to data loss of a double random phase encoding encryption system. The signal-to-noise ratio of the decrypted image is investigated when a part of the encrypted image is lost. The SNR can be enhanced by reducing the ratio of the sampling number of the image to the total sampling number when electronic implementation is performed. In optical implementation, the SNR can be increased by using a phase mask with higher spatial frequency. Both the theory and computer simulations are demonstrated.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2000 Dec 1


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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