Optical image encryption by random shifting in fractional Fourier domains

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dc.contributor.author Hennelly, Bryan M.
dc.contributor.author Sheridan, John T.
dc.date.accessioned 2012-02-22T14:38:53Z
dc.date.available 2012-02-22T14:38:53Z
dc.date.copyright 2003 Optical Society of America en
dc.date.issued 2003-02-15
dc.identifier.citation Optics Letters en
dc.identifier.issn 0146-9592
dc.identifier.issn 1539-4794
dc.identifier.uri http://hdl.handle.net/10197/3523
dc.description.abstract A number of methods have recently been proposed in the literature for the encryption of two-dimensional information by use of optical systems based on the fractional Fourier transform. Typically, these methods require random phase screen keys for decrypting the data, which must be stored at the receiver and must be carefully aligned with the received encrypted data. A new technique based on a random shifting, or jigsaw, algorithm is proposed. This method does not require the use of phase keys. The image is encrypted by juxtaposition of sections of the image in fractional Fourier domains. The new method has been compared with existing methods and shows comparable or superior robustness to blind decryption. Optical implementation is discussed, and the sensitivity of the various encryption keys to blind decryption is examined. en
dc.description.sponsorship Other funder en
dc.format.extent 243763 bytes
dc.format.extent 1072 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.language.iso en en
dc.publisher Optical Society of America en
dc.rights This paper was published in Optical Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=ol-28-4-269. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. en
dc.subject.lcsh Data encryption (Computer science) en
dc.subject.lcsh Fourier transform optics en
dc.subject.lcsh Signal processing en
dc.subject.lcsh Image processing en
dc.title Optical image encryption by random shifting in fractional Fourier domains en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions Publisher's version en
dc.internal.webversions http://dx.doi.org/10.1364/OL.28.000269 en
dc.status Not peer reviewed en
dc.identifier.volume 28 en
dc.identifier.issue 4 en
dc.identifier.startpage 269 en
dc.identifier.endpage 271 en
dc.identifier.doi 10.1364/OL.28.000269
dc.neeo.contributor Hennelly|Bryan M.|aut| en
dc.neeo.contributor Sheridan|John T.|aut| en
dc.description.othersponsorship Enterprise Ireland en
dc.description.admin pe, la, sp, ke, ab, is, en - kpw25/11/11 en


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