Authors:
Freddy Acosta Buenaño
1
;
Gonzalo Olmedo Cifuentes
2
;
Inmaculada Mora-Jiménez
3
and
José Luis Rojo Álvarez
3
Affiliations:
1
Universidad de las Fuerzas Armadas ESPE and Universidad Rey Juan Carlos, Ecuador
;
2
Universidad de las Fuerzas Armadas ESPE, Ecuador
;
3
Universidad Rey Juan Carlos, Spain
Keyword(s):
Image Transmission, Mosaic Image, Color Transformation, Statistical Simplification.
Related
Ontology
Subjects/Areas/Topics:
Image and Video Processing, Compression and Segmentation
;
Multimedia
;
Multimedia and Communications
;
Multimedia Security and Cryptography
;
Multimedia Signal Processing
;
Telecommunications
Abstract:
Current multimedia communication systems seek to transmit images supporting contents by the data stream,
which requires specific effort for their bandwidth optimization. In this scenario, security of data and information
that is being transmitted is highly relevant. A new concept has been recently used in the field of secure
image transmission, known as secret-fragment-visible mosaic image. In this case, a mosaic image is created
and used as a camouflage for a secret image. The mosaic image is similar to a target image freely chosen. We
propose here a technique based on a statistical simplification approach to reduce the number of required bits
for recovering the secret image from the mosaic image. We benchmarked the performance of the method and
the quality of the recovered image. Experimental results showed that the number of bits with the proposed
method was dramatically reduced (close to 3 to 1), and quality metrics were about Root Mean Squared Error
of 32 and Mean Structural Sim
ilarity of 0.7 for the created mosaic image. Our proposal paves the way
towards improved procedures that are suitable for multimedia systems like digital terrestrial television and
similar applications.
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