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dc.contributor.author
Velez Zea, Alejandro  
dc.contributor.author
Barrera Ramírez, John Fredy  
dc.contributor.author
Torroba, Roberto Daniel  
dc.date.available
2018-12-21T20:06:26Z  
dc.date.issued
2017-05  
dc.identifier.citation
Velez Zea, Alejandro; Barrera Ramírez, John Fredy; Torroba, Roberto Daniel; Innovative speckle noise reduction procedure in optical encryption; Institute of Physics Publishing; Journal of Optics (United Kingdom); 19; 5; 5-2017; 1-8  
dc.identifier.issn
2040-8986  
dc.identifier.uri
http://hdl.handle.net/11336/66941  
dc.description.abstract
Encrypting techniques are currently of interest in the optical domain. A common issue when using coherent techniques is speckle noise which influences the final results. Most efforts to solve this issue were directed towards processing the output of the systems. Instead, we present an alternative approach where we seek to control the input to enhance the performance of these techniques. In particular, we analyze an encoding procedure with a joint transform correlator architecture as a case study. We first demonstrate the dependence of the output noise on the spatial distribution of the input, showing the existence of a neglected random correlation noise which contributes to the degradation of the output. We then propose a rearrangement of the input that results in a reduction of the noise level in the outcome. This rearrangement consists of separating the pixels of the input by introducing black pixels between them, keeping the usual remaining procedure unaltered. Our experimental approach opens up new possibilities for the applications of optical security techniques beyond the limitations imposed by noise.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Institute of Physics Publishing  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Noise  
dc.subject
Optical Encryption  
dc.subject
Speckle  
dc.subject.classification
Astronomía  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Innovative speckle noise reduction procedure in optical encryption  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-11-15T18:18:55Z  
dc.journal.volume
19  
dc.journal.number
5  
dc.journal.pagination
1-8  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Velez Zea, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentina  
dc.description.fil
Fil: Barrera Ramírez, John Fredy. Universidad de Antioquia; Colombia  
dc.description.fil
Fil: Torroba, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentina. Universidad Nacional de la Plata. Facultad de Ingeniería. Uidet Grupo de Ensayos Mecanicos Aplicados.; Argentina  
dc.journal.title
Journal of Optics (United Kingdom)  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2040-8986/aa6526  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1088/2040-8986/aa6526