Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval

Autores
Trejos, Sorayda; Barrera, John Fredy; Torroba, Roberto Daniel
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present for the first time an optical encrypting–decrypting protocol for recovering messages without speckle noise. This is a digital holographic technique using a 2f scheme to process QR codes entries. In the procedure, letters used to compose eventual messages are individually converted into a QR code, and then each QR code is divided into portions. Through a holographic technique, we store each processed portion. After filtering and repositioning, we add all processed data to create a single pack, thus simplifying the handling and recovery of multiple QR code images, representing the first multiplexing procedure applied to processed QR codes. All QR codes are recovered in a single step and in the same plane, showing neither cross-talk nor noise problems as in other methods. Experiments have been conducted using an interferometric configuration and comparisons between unprocessed and recovered QR codes have been performed, showing differences between them due to the involved processing. Recovered QR codes can be successfully scanned, thanks to their noise tolerance. Finally, the appropriate sequence in the scanning of the recovered QR codes brings a noiseless retrieved message. Additionally, to procure maximum security, the multiplexed pack could be multiplied by a digital diffuser as to encrypt it. The encrypted pack is easily decoded by multiplying the multiplexing with the complex conjugate of the diffuser. As it is a digital operation, no noise is added. Therefore, this technique is threefold robust, involving multiplexing, encryption, and the need of a sequence to retrieve the outcome.
Fil: Trejos, Sorayda. Universidad de Antioquia; Colombia
Fil: Barrera, John Fredy. Universidad de Antioquia; Colombia
Fil: Torroba, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigaciones Opticas (i); Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional de La Plata. Facultad de Ingenieria; Argentina
Materia
Qr Codes
Optical Packaging
Image Processing
Multiplexing
Digital Holography
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11825
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/11825
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrievalTrejos, SoraydaBarrera, John FredyTorroba, Roberto DanielQr CodesOptical PackagingImage ProcessingMultiplexingDigital Holographyhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present for the first time an optical encrypting–decrypting protocol for recovering messages without speckle noise. This is a digital holographic technique using a 2f scheme to process QR codes entries. In the procedure, letters used to compose eventual messages are individually converted into a QR code, and then each QR code is divided into portions. Through a holographic technique, we store each processed portion. After filtering and repositioning, we add all processed data to create a single pack, thus simplifying the handling and recovery of multiple QR code images, representing the first multiplexing procedure applied to processed QR codes. All QR codes are recovered in a single step and in the same plane, showing neither cross-talk nor noise problems as in other methods. Experiments have been conducted using an interferometric configuration and comparisons between unprocessed and recovered QR codes have been performed, showing differences between them due to the involved processing. Recovered QR codes can be successfully scanned, thanks to their noise tolerance. Finally, the appropriate sequence in the scanning of the recovered QR codes brings a noiseless retrieved message. Additionally, to procure maximum security, the multiplexed pack could be multiplied by a digital diffuser as to encrypt it. The encrypted pack is easily decoded by multiplying the multiplexing with the complex conjugate of the diffuser. As it is a digital operation, no noise is added. Therefore, this technique is threefold robust, involving multiplexing, encryption, and the need of a sequence to retrieve the outcome.Fil: Trejos, Sorayda. Universidad de Antioquia; ColombiaFil: Barrera, John Fredy. Universidad de Antioquia; ColombiaFil: Torroba, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigaciones Opticas (i); Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional de La Plata. Facultad de Ingenieria; ArgentinaIOP Publishing2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11825Trejos, Sorayda; Barrera, John Fredy; Torroba, Roberto Daniel; Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval; IOP Publishing; Journal of Optics; 17; 8; 7-2015; 1-9; 0857022040-89782040-8986enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/2040-8978/17/8/085702info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2040-8978/17/8/085702/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:19Zoai:ri.conicet.gov.ar:11336/11825instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:43:19.571CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
title Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
spellingShingle Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
Trejos, Sorayda
Qr Codes
Optical Packaging
Image Processing
Multiplexing
Digital Holography
title_short Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
title_full Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
title_fullStr Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
title_full_unstemmed Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
title_sort Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval
dc.creator.none.fl_str_mv Trejos, Sorayda
Barrera, John Fredy
Torroba, Roberto Daniel
author Trejos, Sorayda
author_facet Trejos, Sorayda
Barrera, John Fredy
Torroba, Roberto Daniel
author_role author
author2 Barrera, John Fredy
Torroba, Roberto Daniel
author2_role author
author
dc.subject.none.fl_str_mv Qr Codes
Optical Packaging
Image Processing
Multiplexing
Digital Holography
topic Qr Codes
Optical Packaging
Image Processing
Multiplexing
Digital Holography
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present for the first time an optical encrypting–decrypting protocol for recovering messages without speckle noise. This is a digital holographic technique using a 2f scheme to process QR codes entries. In the procedure, letters used to compose eventual messages are individually converted into a QR code, and then each QR code is divided into portions. Through a holographic technique, we store each processed portion. After filtering and repositioning, we add all processed data to create a single pack, thus simplifying the handling and recovery of multiple QR code images, representing the first multiplexing procedure applied to processed QR codes. All QR codes are recovered in a single step and in the same plane, showing neither cross-talk nor noise problems as in other methods. Experiments have been conducted using an interferometric configuration and comparisons between unprocessed and recovered QR codes have been performed, showing differences between them due to the involved processing. Recovered QR codes can be successfully scanned, thanks to their noise tolerance. Finally, the appropriate sequence in the scanning of the recovered QR codes brings a noiseless retrieved message. Additionally, to procure maximum security, the multiplexed pack could be multiplied by a digital diffuser as to encrypt it. The encrypted pack is easily decoded by multiplying the multiplexing with the complex conjugate of the diffuser. As it is a digital operation, no noise is added. Therefore, this technique is threefold robust, involving multiplexing, encryption, and the need of a sequence to retrieve the outcome.
Fil: Trejos, Sorayda. Universidad de Antioquia; Colombia
Fil: Barrera, John Fredy. Universidad de Antioquia; Colombia
Fil: Torroba, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigaciones Opticas (i); Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional de La Plata. Facultad de Ingenieria; Argentina
description We present for the first time an optical encrypting–decrypting protocol for recovering messages without speckle noise. This is a digital holographic technique using a 2f scheme to process QR codes entries. In the procedure, letters used to compose eventual messages are individually converted into a QR code, and then each QR code is divided into portions. Through a holographic technique, we store each processed portion. After filtering and repositioning, we add all processed data to create a single pack, thus simplifying the handling and recovery of multiple QR code images, representing the first multiplexing procedure applied to processed QR codes. All QR codes are recovered in a single step and in the same plane, showing neither cross-talk nor noise problems as in other methods. Experiments have been conducted using an interferometric configuration and comparisons between unprocessed and recovered QR codes have been performed, showing differences between them due to the involved processing. Recovered QR codes can be successfully scanned, thanks to their noise tolerance. Finally, the appropriate sequence in the scanning of the recovered QR codes brings a noiseless retrieved message. Additionally, to procure maximum security, the multiplexed pack could be multiplied by a digital diffuser as to encrypt it. The encrypted pack is easily decoded by multiplying the multiplexing with the complex conjugate of the diffuser. As it is a digital operation, no noise is added. Therefore, this technique is threefold robust, involving multiplexing, encryption, and the need of a sequence to retrieve the outcome.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11825
Trejos, Sorayda; Barrera, John Fredy; Torroba, Roberto Daniel; Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval; IOP Publishing; Journal of Optics; 17; 8; 7-2015; 1-9; 085702
2040-8978
2040-8986
url http://hdl.handle.net/11336/11825
identifier_str_mv Trejos, Sorayda; Barrera, John Fredy; Torroba, Roberto Daniel; Optimized and secure technique for multiplexing QR code images of single characters: application to noiseless messages retrieval; IOP Publishing; Journal of Optics; 17; 8; 7-2015; 1-9; 085702
2040-8978
2040-8986
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/2040-8978/17/8/085702
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2040-8978/17/8/085702/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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