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Image encryption based on random fractional discrete cosine and sine transforms

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Abstract

We first give a new fractionalization of discrete cosine and sine transforms of types I, IV, V and VIII. The fractional discrete cosine and sine transforms with four random parameters are defined, to which we refer as random fractional discrete cosine and sine transforms. A novel image encryption algorithm based on random fractional discrete cosine or sine transform and random phase encoding technique is then proposed. Numerical Simulation results are presented to verify its validity and efficiency.

Original languageEnglish
Title of host publicationProceedings of the 1st International Workshop on Education Technology and Computer Science, ETCS 2009
Pages804-808
Number of pages5
DOIs
StatePublished - 2009
Event1st International Workshop on Education Technology and Computer Science, ETCS 2009 - Wuhan, Hubei, China
Duration: 7 Mar 20098 Mar 2009

Publication series

NameProceedings of the 1st International Workshop on Education Technology and Computer Science, ETCS 2009
Volume1

Conference

Conference1st International Workshop on Education Technology and Computer Science, ETCS 2009
Country/TerritoryChina
CityWuhan, Hubei
Period7/03/098/03/09

Keywords

  • Discrete cosine transform
  • Discrete sine transform
  • Fractional operator
  • Image encryption

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