Subsampling technique to enhance the decoded output of JTC encrypting system

ABSTRACT: Optical systems have physical restrictions that impose limits in the finest spatial feature that can be processed. In this work we combine a subsampling procedure with a multiplexing technique to overtake the limit on the information that is processed in a JTC encryption system. In the process the object is divided in subsamples and each subsample is encrypted separately. Then the encrypted subsamples are multiplexed. The encryption of the subsamples is performed in a real optical JTC encrypting system. The multiplexing and the decryption process are carried out by means of a virtual optical system. Experimental results are presented to show the validity of the proposal.

• Autores: Barrera Ramírez, John Fredy; Rueda Muñoz, Edgar Alberto; Ríos Ocampo, Carlos Andrés; Tebladi, Myrian Cristina; Bolognini, Néstor Alberto; Torroba, Roberto Daniel
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2011
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/8134
• Acceso en línea: http://hdl.handle.net/10495/8134
• Palabra clave: Procesamiento óptico de datos; Optical data processing; Cifrado de datos (informática); Data encryption (computer science); Multiplexación
• Rights: openAccess
• License: http://creativecommons.org/licenses/by-nc-nd/2.5/co/